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ABC quiz: 201+ multiple-choice trivia questions
Quick, free quiz with multiple choice trivia questions. Instant results.
This ABC quiz helps you test what you know across 201+ quick, multiple-choice questions, with instant feedback as you go. Play at your own pace and pick up fun facts along the way. For more variety, try our general knowledge quiz, explore movie trivia questions, or jump into a sports trivia quiz.
What is a common ingredient in a green salad?
Tomato
Cucumber
Carrot
Lettuce
Lettuce is a classic base for green salads due to its crisp texture and mild flavor. It is widely used as the primary ingredient around which other vegetables are added.
Which bird is known for its colorful plumage?
Peacock
Sparrow
Crow
Pigeon
The peacock is renowned for its bright, iridescent tail feathers that it fans out during courtship displays. Its striking appearance makes it a symbol of beauty in the bird world.
What is the opposite of the word "hot"?
Cold
Warm
Boiling
Heat
The word 'cold' is the direct antonym of 'hot'. In everyday language, they represent two extreme ends of the temperature spectrum.
Which sport uses a bat and ball?
Baseball
Tennis
Basketball
Soccer
Baseball is a sport that prominently features a bat and a ball. Its gameplay revolves around batting, pitching, and fielding.
What is the official language of Spain?
Spanish
German
English
French
Spanish, also known as Castilian, is the official language of Spain. It is widely spoken throughout the country and by millions around the world.
Which pet is known for purring?
Rabbit
Bird
Dog
Cat
Cats are well-known for their purring, which is a sign of contentment or self-soothing. This characteristic behavior distinguishes them from many other common pets.
Which letter comes immediately after A?
E
B
C
D
In the English alphabet, the letter that follows A is B. This sequential order is one of the basic principles taught when learning the alphabet.
What is the largest planet in our solar system?
Jupiter
Earth
Saturn
Mars
Jupiter is the largest planet in our solar system as it has a massive size and volume compared to the other planets. Its strong gravitational field also influences many of its moons and surrounding objects.
In which direction does the sun rise?
West
East
North
South
The sun rises in the east due to the Earth's rotation on its axis. This phenomenon has been observed and recorded since early human history.
What do you call a baby cat?
Puppy
Cub
Calf
Kitten
A baby cat is referred to as a kitten. This term is specific to young cats, much like a calf is for cattle or a puppy for dogs.
Which fruit is typically red and round?
Banana
Apple
Orange
Grape
Apples are widely recognized for their red color and round shape. Their common appearance along with their popularity solidifies them as the correct answer.
What is the first letter of the English alphabet?
A
C
B
D
The English alphabet begins with the letter A. This is a fundamental fact taught to young learners and is widely recognized.
Which shape has three sides?
Triangle
Circle
Rectangle
Square
A triangle is defined by having three sides. This basic geometric fact makes it the correct answer.
What gas do humans breathe in?
Nitrogen
Carbon Dioxide
Helium
Oxygen
Humans breathe in oxygen, which is essential for cellular respiration. While air contains other gases, oxygen is the most critical for our survival.
Which country is famous for the Great Wall?
India
Egypt
Japan
China
The Great Wall is an iconic landmark of China, built over centuries to protect its borders. Its historical importance makes it synonymous with China.
How many continents are there on Earth?
7
8
6
5
There are seven continents on Earth: Asia, Africa, North America, South America, Antarctica, Europe, and Australia. This is well-established in geographical studies.
What is Hâ‚‚O more commonly known as?
Oxygen
Salt
Water
Hydrogen
Hâ‚‚O is the chemical formula for water, which is essential for all known forms of life. This basic chemical fact is taught early in science education.
Which instrument has keys and pedals?
Guitar
Drum
Violin
Piano
A piano is well-known for having both keys and pedals, designed to modify the sound during play. This characteristic feature clearly distinguishes it from other instruments.
What color is a ripe banana?
Blue
Red
Yellow
Green
A ripe banana is typically yellow, a change from its green unripe state. This color indication signifies the fruit's readiness to be eaten.
What is the natural satellite orbiting Earth called?
Venus
Moon
Sun
Mars
The natural satellite of Earth is called the Moon. It is a familiar object in the sky and has been a subject of human fascination and study for centuries.
What is the capital of France?
London
Paris
Madrid
Berlin
Paris is the capital city of France and is recognized globally as a center of art, culture, and history.
Which color is found on a standard stop sign?
Red
Green
Blue
Yellow
Stop signs are predominantly red because red is a strong color that attracts attention and signals caution.
Who wrote "Romeo and Juliet"?
Mark Twain
Jane Austen
William Shakespeare
Charles Dickens
William Shakespeare is the famous playwright who penned 'Romeo and Juliet', one of his most renowned works.
Which planet is known as the Red Planet?
Saturn
Jupiter
Mars
Venus
Mars is known as the Red Planet due to its reddish appearance, primarily because of iron oxide on its surface.
Which animal is often called man’s best friend?
Horse
Parrot
Dog
Cat
Dogs are well-known as man’s best friend because of their loyalty, companionship, and long history of domestication.
What is the largest ocean on Earth?
Indian Ocean
Arctic Ocean
Pacific Ocean
Atlantic Ocean
The Pacific Ocean is the largest ocean on Earth, covering more space than all of the world's landmasses combined.
Which season follows winter?
Winter
Spring
Summer
Autumn
Spring is the season that comes after winter, bringing warmer weather and the renewal of plant life.
How many days are in a week?
6
7
8
9
A week is composed of 7 days, which is the standard division of time in most calendars around the world.
What do bees produce?
Honey
Cheese
Bread
Milk
Bees produce honey by collecting nectar from flowers and then processing it, storing it as a food source in their hives.
What kind of marine creature is a dolphin? [ABCD]
Mammal
Reptile
Crustacean
Fish
Dolphins are mammals, not fish. They breathe air, are warm-blooded, and nurse their young, distinguishing them from other marine animals.
Which month typically has the fewest days? [ABCD]
June
February
December
April
February usually has 28 days, making it the month with the fewest days in most years, except during leap years when it has 29 days.
What do you call a baby dog? [ABCD]
Kitten
Foal
Calf
Puppy
A newborn or young dog is called a puppy. This term specifically refers to dogs while other animals have different names for their young.
Which beverage is noted for its caffeine content? [ABCD]
Juice
Soda
Tea
Coffee
Coffee is well-known for its high caffeine content, which is why it is a popular choice for a morning boost. Although other beverages may contain caffeine, coffee is typically recognized for this property.
What does a thermometer measure? [ABCD]
Pressure
Wind speed
Temperature
Humidity
A thermometer is an instrument used to measure temperature. It does not measure pressure, humidity, or wind speed.
What day comes after Monday? [ABCD]
Sunday
Tuesday
Friday
Wednesday
Tuesday is the day that immediately follows Monday in the standard calendar week. This sequence is widely recognized in most cultures.
What is the largest organ of the human body? [ABCD]
Heart
Liver
Skin
Lungs
The skin is the largest organ of the human body based on surface area. It serves as a protective barrier and plays key roles in temperature regulation and sensation.
Which element is represented by the symbol O? [ABCD]
Osmium
Gold
Oxygen
Oganesson
The chemical symbol O stands for Oxygen, an essential element for respiration in most living organisms. The other elements listed have different symbols.
What is frozen water called? [ABCD]
Ice
Snow
Sleet
Hail
Frozen water is commonly referred to as ice. Although snow, hail, and sleet are forms of frozen water, they are distinct in structure and formation process.
Which planet is famous for its rings? [ABCD]
Jupiter
Saturn
Neptune
Uranus
Saturn is renowned for its extensive and bright ring system. Although other planets have rings too, none are as prominent and iconic as those around Saturn.
What do you call a young human child?
Child
Toddler
Infant
Adolescent
The term 'child' is generally used to refer to a young human being before reaching puberty. Although terms like 'infant' or 'toddler' are more specific to certain age ranges, 'child' captures the generic idea behind the question.
Which continent is known for kangaroos?
Africa
Australia
Europe
Asia
Kangaroos are native to Australia and are one of its most well-known and iconic animals. Their habitat is largely limited to this continent, making the answer clear.
What is the main ingredient used to bake bread?
Flour
Sugar
Milk
Yeast
Flour is the primary ingredient in bread, providing the structure and base that is essential for baking. While other ingredients such as yeast contribute to the dough's rise and flavor, flour is the central component.
Which sport typically features a net and a ball?
Cricket
Soccer
Rugby
Tennis
Tennis is played with a ball and a net dividing the court. The game revolves around hitting the ball over the net, which is key to identifying it among other sports.
What is the opposite direction of "up"?
Right
Left
Down
Forward
The opposite of the upward direction is down. This basic directional relationship is commonly understood.
Which holiday is associated with hearts and love?
Halloween
Christmas
Easter
Valentine's Day
Valentine's Day is widely recognized as the holiday that celebrates love and romance, often using hearts as a symbol. It occurs annually on February 14th.
What is the term for frozen rain?
Snow
Sleet
Ice
Hail
Hail refers to balls or lumps of ice that form during certain weather conditions when rain freezes in the atmosphere. This distinguishes it from snow or sleet, which have different formation processes.
Which human sense is used primarily for smell?
Hearing
Taste
Smell
Sight
The sense of smell is primarily responsible for detecting odors in the environment. This is distinct from other senses like sight or hearing which rely on different sensory organs.
What type of tree produces acorns?
Oak
Birch
Maple
Pine
Oak trees are notably known for producing acorns. These nuts serve as the seeds from which new oak trees can grow, making them a distinguishing feature of the species.
Which instrument is played by striking its keys?
Violin
Guitar
Piano
Drums
The piano is an instrument that produces sound when its keys are struck, causing hammers to hit strings. This mechanism distinguishes it from other instruments like string or percussion instruments.
Which holiday is celebrated on December 25th?
Christmas
Halloween
Easter
Thanksgiving
December 25th is widely recognized as Christmas, a holiday commemorating the birth of Jesus Christ. This festive day is celebrated with various traditions around the world.
What color is typical for fresh grass?
Blue
Green
Yellow
Brown
Fresh grass generally appears green due to its high chlorophyll content. This vibrant color is a natural indicator of healthy, growing vegetation.
Who is famous for formulating the theory of gravity?
Nikola Tesla
Galileo Galilei
Isaac Newton
Albert Einstein
Isaac Newton is celebrated for formulating the theory of gravity along with his laws of motion. His groundbreaking work laid the foundation for classical mechanics.
Which ocean lies off the coast of Asia?
Atlantic Ocean
Indian Ocean
Arctic Ocean
Pacific Ocean
The Pacific Ocean stretches along the eastern coast of Asia and is the largest and deepest of the world's oceans. It plays a crucial role in the climate and economies of many Asian countries.
What accessory is worn on the head?
Belt
Scarf
Hat
Gloves
A hat is an accessory commonly worn on the head for protection, style, or cultural reasons. It comes in many forms to suit various occasions and needs.
Which utensil is best for eating soup?
Spoon
Knife
Chopsticks
Fork
A spoon is designed to hold liquid and is the best choice for eating soup. Its curved shape allows for efficient scooping and consumption of the broth.
What is the smallest prime number?
0
2
1
3
The number 2 is the smallest prime number because it is divisible only by 1 and itself. It is also the only even prime number, making it unique in the set of prime numbers.
Which dessert is made primarily with ice cream?
Ice Cream Sundae
Cake
Pie
Pudding
An ice cream sundae is a dessert that features ice cream as its main ingredient, typically topped with syrups, nuts, or whipped cream. It is a popular treat enjoyed in many variations around the world.
What geometric shape is a traditional stop sign?
Octagon
Square
Circle
Triangle
A stop sign is traditionally in the shape of an octagon, which makes it easily recognizable even from a distance or when partially obscured. This unique shape is standardized in many countries.
Which insect is well known for making honey?
Bee
Butterfly
Ant
Fly
Bees, particularly honey bees, are known for producing honey from the nectar they collect from flowers. This natural process not only contributes to the ecosystem through pollination but also provides a sweet reward for humans.
Which invention is Thomas Edison best known for?
Motion Picture Camera
Light Bulb
Electric Generator
Phonograph
Thomas Edison is most famous for developing the practical electric light bulb, which revolutionized how people live and work after dark. Despite his many other inventions, none had as significant an impact on daily life as the light bulb.
Approximately what is the speed of light in meters per second?
3,000,000 m/s
150,000,000 m/s
299,792,458 m/s
30,000,000 m/s
The speed of light in a vacuum is exactly 299,792,458 meters per second. This constant plays a critical role in the fields of physics and astronomy, and is foundational in Einstein's theory of relativity.
Who composed "The Four Seasons"?
Ludwig van Beethoven
Antonio Vivaldi
Johann Sebastian Bach
Wolfgang Amadeus Mozart
Antonio Vivaldi composed "The Four Seasons", a set of four violin concertos that depict the moods of each season. This work is one of the most recognizable pieces in classical music due to its vivid portrayal of nature.
Which U.S. state is nicknamed the Sunshine State?
Texas
Florida
California
Hawaii
Florida is known as the Sunshine State because of its generally warm and sunny climate throughout the year. This nickname reflects the state's popularity as a destination for tourists seeking sun and warmth.
What is the process called when a solid turns directly into a gas?
Sublimation
Deposition
Evaporation
Melting
Sublimation is the process where a substance transitions directly from a solid to a gas without passing through a liquid phase. This phenomenon can be observed in substances such as dry ice (solid CO2).
Which gas is necessary to sustain combustion?
Hydrogen
Oxygen
Carbon Dioxide
Nitrogen
Oxygen is essential for the process of combustion because it reacts with a fuel to produce a flame. Without sufficient oxygen, combustion cannot be maintained, which is why oxygen is critical in both natural and industrial fire processes.
Who wrote the play "Hamlet"?
Mark Twain
Jane Austen
William Shakespeare
Charles Dickens
"Hamlet" is a tragedy written by William Shakespeare, one of the most acclaimed playwrights in history. The play's exploration of complex themes such as revenge, madness, and political intrigue has cemented its status as a literary classic.
What is the largest mammal found on Earth?
Elephant
Blue Whale
Hippopotamus
Giraffe
The Blue Whale is the largest mammal on Earth, known for its immense size and weight. It can reach lengths of over 100 feet and is found in oceans around the globe, highlighting its status as a marine giant.
Which leader is renowned for nonviolent protest in India?
Jawaharlal Nehru
Subhas Chandra Bose
Indira Gandhi
Mahatma Gandhi
Mahatma Gandhi led India to independence through his philosophy of nonviolent resistance. His methods of peaceful protest have inspired civil rights movements around the world.
What is the primary ingredient used in guacamole?
Onion
Cucumber
Tomato
Avocado
Guacamole is a popular dip whose main ingredient is avocado. The natural creaminess of avocados makes them ideal for creating the smooth texture and rich flavor characteristic of guacamole.
What optical phenomenon is responsible for rainbows?
Diffraction
Reflection
Refraction
Dispersion
Rainbows are formed when light is refracted as it enters a raindrop and then dispersed into its component colors. The bending of light, known as refraction, is the primary phenomenon responsible for this display.
Who is renowned for making groundbreaking contributions to physics?
Galileo Galilei
Albert Einstein
Nikola Tesla
Isaac Newton
Albert Einstein is celebrated for his revolutionary theories such as the theory of relativity, which fundamentally changed our understanding of space, time, and gravity. His work is a cornerstone of modern physics.
Which continent is celebrated for its diverse wildlife?
Asia
Africa
South America
Australia
Africa is known for its extraordinary biodiversity, including iconic species such as elephants, lions, and giraffes. The continent's vast savannas, jungles, and deserts provide habitats for a wide array of wildlife.
What is a group of lions commonly called?
Pride
Herd
Flock
Pack
A group of lions is traditionally known as a 'pride.' This term reflects the social nature of lions, where related females and a few males live and work together.
Which cultural celebration in October involves costumes and masks?
Carnival
Oktoberfest
Halloween
Mardi Gras
Halloween, celebrated in October, is famously associated with costumes and masks. The festival includes various traditions such as trick-or-treating, haunted houses, and costume parties.
What science deals with the study of weather?
Astronomy
Geology
Biology
Meteorology
Meteorology is the scientific study of the atmosphere and weather patterns. It involves understanding atmospheric phenomena to predict weather changes and study climate trends.
Which planet is particularly famous for its dazzling rings?
Saturn
Uranus
Jupiter
Neptune
Saturn is well known for its extensive and visually striking ring system, which is composed primarily of ice particles. These rings are one of the most distinctive features in our solar system.
Who is famously known as the "King of Pop"?
Prince
Michael Jackson
Freddie Mercury
Elvis Presley
Michael Jackson earned the title 'King of Pop' due to his profound influence on the music industry and his record-breaking achievements in pop music. His innovative performances and hits have left a lasting cultural legacy.
What is the largest land animal on Earth?
Hippopotamus
African Elephant
Rhinoceros
Giraffe
The African Elephant is the largest land animal, known for its impressive size and strength. Its large ears, trunk, and social behaviors distinguish it among other terrestrial animals.
Which mythic Greek hero is noted for his extraordinary strength?
Perseus
Odysseus
Achilles
Hercules
Hercules is one of the most famous heroes in Greek mythology, renowned for his extraordinary strength and his completion of the Twelve Labors. His feats have become synonymous with heroic endurance and might.
What is the largest desert in the world?
Antarctic Desert
Gobi Desert
Sahara Desert
Arabian Desert
The Antarctic Desert is considered the largest desert in the world by area, as it covers most of Antarctica with extremely low precipitation. Although icy rather than sandy, its dryness meets the criteria for a desert.
Which element is denoted by the symbol Fe?
Iron
Fermium
Francium
Fluorine
Fe is the chemical symbol for iron, an essential element in both industry and biology. Its recognition is fundamental in chemistry.
Who is credited with painting the Mona Lisa?
Leonardo da Vinci
Donatello
Raphael
Michelangelo
Leonardo da Vinci is the artist behind the famous painting, the Mona Lisa. His mastery of technique and subtle use of sfumato have made the painting a symbol of Renaissance art.
What is the square root of 64?
7
9
8
6
The square root of 64 is 8 because 8 multiplied by itself equals 64. This is a fundamental arithmetic concept taught early in mathematics.
In which year did the Titanic sink?
1905
1912
1920
1918
The Titanic sank in 1912 during its maiden voyage, marking one of the most infamous maritime disasters in history. This event continues to be studied for its impact on maritime safety.
Which instrument is known for having 88 keys?
Guitar
Keyboard
Piano
Organ
The piano is known for its 88 keys, providing a wide range of musical notes for composition and performance. This feature distinguishes it from many other keyboard instruments.
What is the capital city of Japan?
Beijing
Osaka
Tokyo
Kyoto
Tokyo is the capital of Japan and its largest city, known for its modern architecture as well as historical landmarks. It serves as a major political, economic, and cultural center.
Which planet is closest to the sun?
Venus
Mars
Mercury
Earth
Mercury is the planet closest to the sun, resulting in extreme temperature fluctuations and swift orbital periods. Its proximity to the sun gives it unique characteristics compared to other planets.
Who wrote the dystopian novel "1984"?
J.R.R. Tolkien
Aldous Huxley
George Orwell
Ray Bradbury
George Orwell is the author of the dystopian novel '1984', which explores themes of totalitarianism and surveillance. The book has had a profound influence on discussions of government and ethics.
What is the largest bone in the human body?
Tibia
Femur
Humerus
Fibula
The femur, commonly known as the thigh bone, is the largest and strongest bone in the human body. It plays a critical role in supporting the body’s weight and enabling movement.
Who is known as the father of modern computing?
John von Neumann
Ada Lovelace
Charles Babbage
Alan Turing
Charles Babbage is widely recognized as the father of modern computing because of his conceptual designs for mechanical computing devices, which laid the groundwork for the development of modern computers.
Which planet is known for having the most moons?
Neptune
Uranus
Jupiter
Saturn
Recent astronomical observations have confirmed that Saturn has more moons than any other planet in our solar system, thanks to numerous discoveries made with advanced telescopes.
In which ocean is the Bermuda Triangle located?
Atlantic Ocean
Arctic Ocean
Pacific Ocean
Indian Ocean
The Bermuda Triangle is a loosely defined region in the Atlantic Ocean, famous for the mysterious disappearance of ships and aircraft.
What is the longest river in the world?
Yangtze River
Amazon River
Mississippi River
Nile River
The Nile River, which flows through northeastern Africa, is traditionally recognized as the longest river in the world, spanning thousands of kilometers.
Who discovered penicillin?
Louis Pasteur
Joseph Lister
Robert Koch
Alexander Fleming
In 1928, Alexander Fleming discovered penicillin, marking the beginning of antibiotic medicine and fundamentally changing the treatment of bacterial infections.
What is the primary gas that makes up Earth's atmosphere?
Nitrogen
Carbon Dioxide
Argon
Oxygen
Nitrogen makes up roughly 78% of the Earth's atmosphere by volume, which is significantly more than any other gas present.
Which country hosted the 2016 Summer Olympics?
Brazil
China
Russia
United Kingdom
The 2016 Summer Olympics were held in Rio de Janeiro, Brazil, making the country the host for these internationally celebrated games.
What is the most widely spoken language globally?
Mandarin Chinese
Hindi
English
Spanish
English is considered the most widely spoken language globally when both native and non-native speakers are taken into account, serving as a common language for international discourse.
Which painter is known for his Blue Period?
Claude Monet
Vincent van Gogh
Pablo Picasso
Salvador DalĂ
Pablo Picasso's Blue Period was marked by paintings rendered in shades of blue, reflecting somber themes and emotional depth, and it remains one of the most famous phases of his career.
What natural force keeps planets in orbit around the sun?
Magnetism
Inertia
Gravity
Friction
Gravity is the fundamental force that attracts objects with mass towards one another, and it is the reason why planets remain in orbit around the sun.
What is the capital city of Italy?
Milan
Venice
Rome
Naples
Rome is the capital city of Italy, known for its rich history and cultural significance. It has been the political and historical center of the country for centuries.
Which surrealist artist is associated with melting clocks?
Salvador DalĂ
Frida Kahlo
René Magritte
Pablo Picasso
Salvador DalĂ is famous for his surrealist works, including the painting 'The Persistence of Memory' which features melting clocks. This technique is a hallmark of his unique artistic style.
What term describes the release of energy during a chemical reaction?
Catalytic
Neutral
Endothermic
Exothermic
An exothermic reaction releases energy, usually in the form of heat. This contrasts with endothermic reactions where energy is absorbed.
Who authored the novel "Pride and Prejudice"?
Jane Austen
Charlotte Brontë
Mary Shelley
Emily Brontë
Jane Austen is the author of 'Pride and Prejudice', a classic novel that explores themes of love, reputation, and class in 19th century England. Her keen observations and wit have made the work enduringly popular.
What do we call animals that consume both plants and meat?
Herbivores
Insectivores
Carnivores
Omnivores
Omnivores are animals that eat both plant matter and meat. This dietary flexibility allows them to adapt to a variety of environments and food sources.
Which element is represented by the symbol Na?
Neodymium
Nickel
Nitrogen
Sodium
Na is the chemical symbol for sodium, an essential element in many biological and chemical processes. Its placement on the periodic table reflects its properties and reactivity.
What is the largest internal organ in the human body?
Brain
Liver
Lungs
Heart
The liver is the largest internal organ and plays a vital role in metabolism, detoxification, and other essential bodily functions. Its size and regenerative capacity are notable among human organs.
Which part of the cell contains genetic material?
Cell membrane
Cytoplasm
Ribosome
Nucleus
The nucleus is the organelle that contains a cell’s genetic material, primarily in the form of DNA. It acts as the control center, managing cell growth and reproduction.
Who formulated Newton’s laws of motion?
Galileo Galilei
Albert Einstein
Isaac Newton
Nikola Tesla
Isaac Newton formulated the three fundamental laws of motion that laid the foundation for classical mechanics. His work has deeply influenced the understanding of physics and the natural world.
What process describes the transformation of liquid water into vapor?
Condensation
Evaporation
Deposition
Sublimation
Evaporation is the process by which liquid water transforms into vapor, often due to the application of heat. This phase change is a critical component of the water cycle.
What type of energy do we obtain from the sun?
Wind Energy
Hydroelectric Energy
Solar Energy
Geothermal Energy
We obtain solar energy from the sun, which is harnessed directly as light and heat. This energy source is renewable and forms the basis for technologies like solar panels.
Which famous architectural structure is located in Rome?
Big Ben
Eiffel Tower
Colosseum
Statue of Liberty
The Colosseum is an iconic ancient amphitheater located in Rome, Italy. It is a symbol of the engineering prowess of the Roman Empire.
What is the chemical symbol for gold?
Fe
Pb
Ag
Au
Gold is represented by the symbol Au on the periodic table. This symbol is derived from the Latin name 'Aurum', meaning shining dawn.
Which instrument is used to measure atmospheric pressure?
Barometer
Thermometer
Hygrometer
Anemometer
A barometer is the instrument used to measure atmospheric pressure. Its readings are essential for weather forecasting and understanding meteorological changes.
Who is credited with the invention of the light bulb?
Thomas Edison
Samuel Morse
Nikola Tesla
Alexander Graham Bell
Thomas Edison is widely credited with the invention of the practical electric light bulb. His developments in electrical systems paved the way for modern electric lighting.
What is the capital of Canada?
Toronto
Ottawa
Vancouver
Montreal
Ottawa is the capital city of Canada. It was chosen as the capital due to its strategic location and as a compromise between English and French-speaking regions.
Which ancient civilization is famous for building pyramids?
Mayans
Romans
Egyptians
Greeks
The ancient Egyptians are renowned for constructing the pyramids as tombs for their pharaohs. These impressive structures are some of the most enduring symbols of ancient engineering.
What is the process by which plants convert sunlight into chemical energy?
Transpiration
Respiration
Photosynthesis
Fermentation
Photosynthesis is the process in which plants convert sunlight into chemical energy stored as sugars. This process is fundamental to life on Earth as it provides energy for nearly all organisms.
Which vitamin is synthesized when skin is exposed to sunlight?
Vitamin C
Vitamin A
Vitamin E
Vitamin D
Vitamin D is synthesized by the skin when it is exposed to sunlight. This vitamin is crucial for bone health and immune system function.
What is the name of Mars’s natural satellite?
Europa
Io
Deimos
Phobos
Mars has two natural satellites, but Phobos is often mentioned as the more prominent one due to its size and proximity to Mars. Phobos orbits Mars rapidly and is a subject of ongoing scientific study.
Which animal is recognizable by its black and white stripes?
Zebra
Dalmatian
Penguin
Skunk
The zebra is widely recognized for its unique pattern of black and white stripes, which play a role in camouflage and social interactions. Its striking appearance distinguishes it from other animals in the wild.
Who was the first human to set foot on the moon?
Michael Collins
Buzz Aldrin
Neil Armstrong
Yuri Gagarin
Neil Armstrong became the first human to set foot on the moon in 1969, marking a monumental achievement in space exploration. His famous words inspired millions and remain a significant moment in human history.
What is the primary mineral component in granite?
Quartz
Halite
Gypsum
Calcite
Granite is an igneous rock primarily composed of quartz, along with feldspar and mica. Quartz contributes to granite’s hardness and durability, making it a popular building material.
Which sea creature is famous for having eight arms?
Starfish
Squid
Octopus
Jellyfish
The octopus is well known for its eight arms, which it uses for mobility, hunting, and defense. Its distinctive body structure sets it apart from many other marine creatures.
On which continent is the Sahara Desert located?
Africa
Australia
Asia
South America
The Sahara Desert is located in Africa, spanning several countries across the northern part of the continent. It is one of the largest and hottest deserts in the world.
Who was the prominent civil rights leader in the U.S. during the 1960s?
Malcolm X
Frederick Douglass
Rosa Parks
Martin Luther King Jr.
Martin Luther King Jr. was a key figure in the American Civil Rights Movement during the 1960s, renowned for his nonviolent approach to activism. His leadership and powerful speeches helped shape the fight for equality in the United States.
What is the chemical formula for carbon dioxide?
C2O
CO2
CO
O2
Carbon dioxide is correctly represented by the chemical formula CO2, indicating one carbon atom bonded to two oxygen atoms. This gas is a critical component in the Earth's atmosphere and plays a major role in the greenhouse effect.
Which country is celebrated for the tango dance?
Argentina
Spain
Brazil
Mexico
The tango dance originated in Argentina and has become a defining element of its cultural identity. Its passionate rhythms and intricate movements have made it famous worldwide.
What do we call a word with a similar meaning to another word?
Homonym
Acronym
Synonym
Antonym
A synonym is a word that has the same or a nearly identical meaning as another word. Using synonyms can enrich language and prevent repetitive language in writing and speech.
Which instrument is typically played by strumming its strings?
Piano
Drum
Guitar
Violin
The guitar is an instrument played by strumming or plucking its strings, producing a wide variety of sounds. Its versatility and ease of play have made it popular in many musical genres.
Which organ is responsible for pumping blood throughout the body?
Liver
Lung
Brain
Heart
The heart is the central organ of the circulatory system responsible for pumping blood throughout the body. Its rhythmic contractions ensure that oxygen and nutrients reach all tissues.
At what temperature (in Celsius) does water boil?
0°C
50°C
100°C
80°C
Water boils at 100°C under standard atmospheric pressure. This temperature is a fundamental physical property of water that is widely recognized.
Who developed the theory of relativity?
Isaac Newton
Albert Einstein
Nikola Tesla
Galileo Galilei
Albert Einstein is credited with the development of the theory of relativity, which revolutionized modern physics. His work in both special and general relativity changed our understanding of space, time, and gravity.
Which country is renowned for tulips and windmills?
Germany
France
Netherlands
Italy
The Netherlands is famous for its iconic tulips and traditional windmills. These elements have become symbolic representations of the country's rich cultural heritage and landscape.
What is considered the hardest natural substance on Earth?
Corundum
Diamond
Quartz
Graphite
Diamond is the hardest known natural substance, widely used in industrial applications for cutting and drilling. Its unique arrangement of carbon atoms gives it exceptional strength and durability.
Which ancient Greek myth involves a labyrinth?
The Odyssey of Odysseus
The Twelve Labors of Hercules
The myth of Theseus and the Minotaur
The tale of Persephone
The myth of Theseus and the Minotaur is centered on a labyrinth, where the hero Theseus navigates its twists and turns to defeat the Minotaur. This myth is a well-known part of ancient Greek mythology.
What language is predominantly spoken in Brazil?
Spanish
Portuguese
French
English
Portuguese is the official and most widely spoken language in Brazil. This is due to Brazil's history as a former colony of Portugal.
What is the currency of the United Kingdom?
Euro
Yen
Dollar
Pound Sterling
The United Kingdom uses the Pound Sterling as its official currency. This currency has a long history and remains a symbol of the UK's economic identity.
Which organ in the human body filters the blood?
Lung
Liver
Heart
Kidney
The kidneys are essential for filtering waste and excess fluids from the blood. They play a crucial role in maintaining the body’s chemical balance.
What is the chemical formula for table salt?
CO2
H2O
C6H12O6
NaCl
Table salt is chemically known as sodium chloride, represented by the formula NaCl. This simple ionic compound is vital in many aspects of life and food preparation.
Who is considered the founder of modern nursing?
Mary Seacole
Clara Barton
Florence Nightingale
Dorothea Dix
Florence Nightingale is credited with founding modern nursing through her significant contributions during the Crimean War and her subsequent reforms in hospital care and sanitary practices.
What is the chemical formula for methane?
H2O
C2H6
CO2
CH4
Methane is a simple hydrocarbon consisting of one carbon atom bonded to four hydrogen atoms, making its chemical formula CH4.
Which Renaissance artist sculpted "David"?
Leonardo da Vinci
Raphael
Michelangelo
Donatello
Michelangelo is renowned for sculpting the marble statue 'David', which is considered one of the masterpieces of Renaissance art.
What is the capital of Hungary?
Vienna
Bucharest
Prague
Budapest
Budapest is the largest city in Hungary and serves as its capital, known for its rich history and architectural landmarks.
Which law explains the behavior of gases under pressure conditions?
Boyle's Law
Avogadro's Law
Charles's Law
Newton's Law
Boyle's Law states that at constant temperature, the pressure of a given mass of gas is inversely proportional to its volume. This principle is fundamental in understanding gas behavior.
What is the official currency of Sweden?
Euro
Swedish krona
Pound
Dollar
Sweden uses the Swedish krona as its official currency. Despite being a member of the European Union, Sweden has retained its own currency instead of adopting the Euro.
Who wrote the epic poem "The Divine Comedy"?
Virgil
Geoffrey Chaucer
Homer
Dante Alighieri
Dante Alighieri is the author of 'The Divine Comedy,' an epic poem that is a cornerstone of world literature and provides profound insights into medieval philosophy and theology.
What does the acronym DNA stand for?
Deoxyribose Nucleic Acid
Dimethyl Nitrate Acid
Deoxyribonucleic Acid
Dicarboxylic Acid
DNA stands for Deoxyribonucleic Acid, which is the molecule that carries the genetic instructions used in the growth, development, and functioning of all known living organisms.
Which component makes up the majority of Earth’s atmosphere?
Nitrogen
Argon
Carbon Dioxide
Oxygen
Nitrogen makes up approximately 78% of the Earth's atmosphere, making it the predominant gas present.
What is the field of study that examines ancient life forms called?
Geology
Paleontology
Biology
Archaeology
Paleontology is the scientific study of life in the geologic past, primarily through the analysis of fossils, which helps scientists understand the evolution of ancient organisms.
What is the primary language spoken in Egypt?
Arabic
French
Hebrew
English
Arabic is the official language spoken in Egypt and is used in government, education, and daily communication. Its use defines much of the country's cultural identity.
Which planet in our solar system is known for its retrograde rotation?
Mars
Mercury
Earth
Venus
Venus rotates in the opposite direction to most other planets, a phenomenon known as retrograde rotation. This unusual rotation causes the sun to rise in the west on Venus, distinguishing it from its planetary neighbors.
What is the capital city of New Zealand?
Christchurch
Hamilton
Auckland
Wellington
Wellington is the capital of New Zealand and the administrative center of the country. Although Auckland is the most populous city, the political and governmental activities are centered in Wellington.
Who composed the opera "Carmen"?
Giuseppe Verdi
Richard Wagner
Georges Bizet
Wolfgang Amadeus Mozart
Georges Bizet is the composer of the opera "Carmen," which is renowned for its compelling music and dramatic storyline. The opera remains one of the most performed works in the classical repertoire.
In set theory, what is a "power set"?
A set that is closed under union and intersection
The set of all subsets of a given set
A set with increased cardinality
A set containing only the empty set
A power set is defined as the set of all possible subsets of a given set, including both the empty set and the set itself. This concept is fundamental in set theory and lays the groundwork for various applications in mathematics.
Which battle is widely regarded as a turning point in World War II?
Battle of Midway
Battle of Stalingrad
Battle of the Bulge
D-Day (Normandy Invasion)
The Battle of Stalingrad marked a significant turning point in World War II, as it halted the German advance into the Soviet Union. Its outcome shifted the balance of power, leading to eventual Allied victories on the Eastern Front.
What term describes animals that predominantly consume meat?
Herbivores
Carnivores
Omnivores
Insectivores
Carnivores are animals that primarily consume meat as their main source of food. This dietary classification is distinct from herbivores, which eat plants, and omnivores, which consume both plants and animals.
Who painted the ceiling of the Sistine Chapel?
Donatello
Raphael
Michelangelo
Leonardo da Vinci
Michelangelo painted the ceiling of the Sistine Chapel, one of the most impressive achievements of Renaissance art. His frescoes continue to be celebrated for their beauty and artistic significance.
Which economic principle asserts that supply and demand determine prices?
Comparative Advantage
Law of Supply and Demand
Economic Equilibrium
Law of Diminishing Returns
The Law of Supply and Demand explains how prices fluctuate based on the relationship between the availability of a product and the desire for it by consumers. It is a fundamental principle in economics that helps determine market equilibrium.
What is the Roman numeral representation for 100?
L
C
M
D
In Roman numerals, the letter 'C' is used to represent the number 100. This numeral system uses specific letters from the Latin alphabet to denote different values, with 'C' being one of the key symbols.
Who is noted for formulating the uncertainty principle? [ABCD]
Werner Heisenberg
Max Planck
Niels Bohr
Albert Einstein
Werner Heisenberg is credited with formulating the uncertainty principle, a fundamental concept in quantum mechanics. This principle states that certain pairs of physical properties cannot both be known to arbitrary precision.
What is the boiling point of nitrogen expressed in Kelvin? [ABCD]
77 K
273 K
195 K
100 K
Nitrogen boils at approximately 77 Kelvin under standard atmospheric pressure. This relatively low boiling point is due to its weak intermolecular forces, making it a gas at room temperature.
Which element does the symbol Pb represent? [ABCD]
Tin
Plumbum
Lead
Bismuth
The symbol Pb comes from the Latin word 'plumbum', which means lead. Lead is a heavy metal with various applications and a long history of use.
Which economic theory is most closely associated with John Maynard Keynes? [ABCD]
Monetarism
Keynesian economics
Marxist economics
Classical economics
Keynesian economics is the economic theory developed by John Maynard Keynes, emphasizing the role of government intervention and fiscal policies in stabilizing the economy. His ideas changed the way economies are managed during periods of recession and growth.
Who won the Nobel Prize in Literature in 1954? [ABCD]
Ernest Hemingway
T.S. Eliot
Samuel Beckett
William Faulkner
Ernest Hemingway was awarded the Nobel Prize in Literature in 1954 in recognition of his mastery of the art of narrative. His distinctive style and impactful storytelling have made a significant contribution to literature.
What is the capital city of Ethiopia? [ABCD]
Addis Ababa
Mekelle
Dire Dawa
Gondar
Addis Ababa is the capital city of Ethiopia and serves as the political, cultural, and economic center of the country. It is also the headquarters of the African Union and various international organizations.
Which philosopher authored "Critique of Pure Reason"? [ABCD]
Søren Kierkegaard
Georg Wilhelm Friedrich Hegel
Immanuel Kant
Friedrich Nietzsche
Immanuel Kant is the philosopher who authored "Critique of Pure Reason," a seminal work in modern philosophy. His work laid the foundations for much of contemporary epistemology and metaphysics.
What is the primary product formed during photosynthesis? [ABCD]
Water
Carbon Dioxide
Glucose
Oxygen
The primary product formed during photosynthesis is glucose, a simple sugar that plants use for energy. Although oxygen is also produced as a byproduct, glucose is the key component synthesized in the process.
Which theoretical framework is essential to modern particle physics? [ABCD]
String theory
General relativity
Classical mechanics
Quantum field theory
Quantum field theory is the fundamental theoretical framework used in modern particle physics to describe the interactions of subatomic particles. It combines quantum mechanics with special relativity and underpins many aspects of contemporary physics.
What term describes the smallest unit of a chemical element? [ABCD]
Subatomic particle
Atom
Ion
Molecule
An atom is the smallest unit of a chemical element that retains its chemical properties. Atoms are the basic building blocks of matter and combine in various ways to form molecules and compounds.
What scientific principle is described by the Heisenberg Uncertainty Principle?
It establishes that physical constants are invariant across all reference frames.
It states that the position and momentum of a particle cannot both be measured exactly at the same time.
It describes the wave-particle duality of light.
It explains that energy is always conserved in isolated systems.
The Heisenberg Uncertainty Principle asserts that the more precisely one property (like position) is measured, the less precisely the complementary property (like momentum) can be controlled or determined. This intrinsic uncertainty is a fundamental concept in quantum mechanics.
Which city hosted the 1936 Summer Olympics?
Rome
Berlin
Tokyo
Paris
The city of Berlin in Germany hosted the 1936 Summer Olympics, an event that became notably intertwined with the political context of the time. The games were used as a platform for propaganda by the Nazi regime.
What organelle is known as the powerhouse of the cell?
Mitochondrion
Endoplasmic Reticulum
Nucleus
Chloroplast
Mitochondria generate most of the cell's supply of adenosine triphosphate (ATP), the essential energy currency of the cell, which is why they are famously referred to as the 'powerhouse' of the cell. Their role in energy metabolism is critical for cellular function.
Who is the author of the philosophical work "The Republic"?
Socrates
Epicurus
Aristotle
Plato
Plato wrote 'The Republic', a seminal work in Western philosophy that discusses justice, the ideal state, and the theory of forms. Its influence extends across centuries, shaping philosophical and political thought.
What is the capital of Kazakhstan?
Karaganda
Nur-Sultan
Astana
Almaty
Nur-Sultan is the capital of Kazakhstan; it was renamed from Astana in 2019. The city serves as the political and administrative center of the country as it continues to develop and modernize.
Which treaty formally ended World War I?
Treaty of Paris
Treaty of Trianon
Treaty of Versailles
Treaty of Brest-Litovsk
The Treaty of Versailles officially ended World War I, imposing significant reparations and territorial changes on Germany. Its strict terms are often cited as factors contributing to the political and economic instability that led to World War II.
What is the derivative of sin(x) with respect to x?
sin(x)
-cos(x)
cos(x)
-sin(x)
In calculus, the derivative of sin(x) is cos(x), a fundamental result derived from the limits that define derivatives. This relationship is essential for solving many problems in mathematics and physics.
Which chemical element has an atomic number of 79?
Mercury
Gold
Platinum
Silver
Gold is the chemical element with an atomic number of 79. It is highly prized for its unique properties, including its malleability, resistance to corrosion, and economic value.
In what year did the Berlin Wall fall?
1987
1985
1991
1989
The Berlin Wall fell in 1989, marking the symbolic end of the Cold War and paving the way for German reunification. This historic event played a crucial role in reshaping the political landscape of Europe.
Who is considered the founder of psychoanalysis?
Sigmund Freud
Carl Jung
Alfred Adler
Ivan Pavlov
Sigmund Freud is widely recognized as the founder of psychoanalysis, a framework that has influenced modern psychology and psychotherapy. His theories on the unconscious, defense mechanisms, and the significance of dreams have left a lasting impact on the field.
In quantum field theory, what describes the exchange mechanism of force-carrying particles? [ABCD]
Hamiltonian dynamics
Schrödinger equation
Lagrangian mechanics
Feynman diagrams
Feynman diagrams provide a pictorial representation of the interactions between particles in quantum field theory, illustrating how force-carrying particles are exchanged between matter particles. They simplify complex calculations and play a crucial role in predicting outcomes of particle interactions.
Which Renaissance polymath made significant contributions to both art and science? [ABCD]
Michelangelo
Raphael
Leonardo da Vinci
Donatello
Leonardo da Vinci is a quintessential Renaissance polymath whose work spanned art, science, engineering, and anatomy. His masterpieces such as the Mona Lisa and The Last Supper, along with his numerous scientific sketches, underline his vast contributions.
What does Fermat’s Last Theorem assert about integer solutions? [ABCD]
The theorem claims that prime numbers do not satisfy the equation for any value of n.
The equation a^n + b^n = c^n has infinitely many solutions when n equals 2.
For any exponent n greater than 2, there exist trivial solutions with zero values.
There are no three positive integers that satisfy a^n + b^n = c^n for any integer exponent greater than 2.
Fermat’s Last Theorem states that the equation a^n + b^n = c^n has no solutions in positive integers for any integer n greater than 2. This famous conjecture was unsolved for centuries until it was finally proven by Andrew Wiles.
Which groundbreaking theory describes the structure of DNA as a double helix? [ABCD]
Maurice Wilkins' theory
Rosalind Franklin's proposal
Watson and Crick's model
Linus Pauling's structure
Watson and Crick are credited with proposing the double helix structure of DNA, a groundbreaking discovery that transformed biological sciences. Their model, based on X-ray diffraction data, revealed the mechanism of genetic information storage and replication.
Who is the Nobel Prize-winning physicist recognized for contributions to quantum mechanics? [ABCD]
Erwin Schrödinger
Albert Einstein
Max Planck
Niels Bohr
Niels Bohr played a pivotal role in the development of quantum mechanics, particularly through his model of atomic structure. His contributions to understanding the behavior of electrons in atoms earned him the Nobel Prize in Physics.
What is the capital city of Bhutan? [ABCD]
Paro
Punakha
Phuentsholing
Thimphu
Thimphu is the capital and largest city of Bhutan, serving as the administrative and cultural center of the country. It has grown in significance for its modern governmental and economic functions while preserving Bhutanese traditions.
Which philosophical movement is best known for its radical skepticism? [ABCD]
Stoicism
Rationalism
Pyrrhonism
Existentialism
Pyrrhonism is a school of thought that advocates for radical skepticism, questioning the possibility of certain knowledge. Its approach involves suspending judgment to recognize the limits of human understanding.
What is the primary purpose of cryptographic hash functions in computer science? [ABCD]
To compress data into smaller sizes for efficient storage.
To encrypt messages ensuring privacy during transmission.
To generate public and private key pairs for encryption.
To verify data integrity by producing a unique fixed-size output for variable-size input.
Cryptographic hash functions are primarily used to ensure data integrity and security. They convert input data of any size into a fixed-size string of characters, where even a minor change in input results in a drastically different hash, making tampering detectable. Cryptographic hash function - Wikipedia
Who is credited with pioneering the field of behavioral economics? [ABCD]
John Maynard Keynes
Richard Thaler
Adam Smith
Daniel Kahneman
Daniel Kahneman's research on cognitive biases fundamentally shifted the understanding of economic decision-making, laying the foundations of behavioral economics. His work, in collaboration with Amos Tversky, has had a profound impact on both psychology and economic theory.
What is the astronomical significance of the Hubble constant? [ABCD]
It measures the brightness variations of distant galaxies.
It determines the age and distance of stars within the Milky Way.
It describes the intensity of gravitational forces in space.
It quantifies the rate at which the universe is expanding.
The Hubble constant is a fundamental parameter in cosmology that indicates the rate of expansion of the universe. It is critical for estimating the age, size, and future evolution of the cosmos.
Which mathematician is known for proving the Prime Number Theorem? [ABCD]
Leonhard Euler
Jacques Hadamard
Bernhard Riemann
Carl Friedrich Gauss
Jacques Hadamard, along with Charles-Jean de la Vallée Poussin, independently proved the Prime Number Theorem, which describes the asymptotic distribution of prime numbers. Their work has deep implications in number theory and the study of prime distribution.
What major unsolved problem in mathematics is addressed by the Riemann Hypothesis? [ABCD]
The Four Color Theorem
The proof of Fermat's Last Theorem
The distribution of prime numbers
P vs NP problem
The Riemann Hypothesis conjectures that all non-trivial zeros of the Riemann zeta function have real part 1/2, a property deeply linked to the distribution of prime numbers. Its truth or falsity has profound implications for number theory.
Which decisive battle in 1815 marked the end of Napoleon’s reign? [ABCD]
Battle of Waterloo
Battle of Leipzig
Battle of Trafalgar
Battle of Austerlitz
The Battle of Waterloo in 1815 marked the defeat of Napoleon Bonaparte, ending his rule and significantly altering the balance of power in Europe. The battle's outcome is a major turning point in European history.
What is remarkable about Euler's identity in mathematics? [ABCD]
It relates algebra and geometry through symmetry.
It is used to solve quadratic equations.
It connects five fundamental mathematical constants: 0, 1, e, i, and π, in a simple and profound equation.
It provides the basis for calculus.
Euler's identity is celebrated for its unexpected relationship linking five of mathematics' most important constants in a single, elegant formula. This connection is often hailed as one of the most beautiful expressions in mathematics.
Who introduced the concept of the social contract in political philosophy? [ABCD]
John Locke
Montesquieu
Jean-Jacques Rousseau
Thomas Hobbes
Jean-Jacques Rousseau is widely recognized for his work 'The Social Contract,' which laid down the principles that legitimate political authority depends on a contract agreed upon by all citizens. His ideas significantly influenced modern democratic thought.
What is the name of the problem that involves finding the shortest route connecting multiple points? [ABCD]
Knapsack Problem
Minimum Spanning Tree Problem
Hamiltonian Path Problem
Traveling Salesman Problem
The Traveling Salesman Problem (TSP) is a classic issue in combinatorial optimization, where the task is to determine the shortest possible route that visits each point once and returns to the starting position. Its complexity makes it a central challenge in computational theory.
Which physicist is best known for developing the theory of general relativity? [ABCD]
Stephen Hawking
Isaac Newton
Nikola Tesla
Albert Einstein
Albert Einstein developed the theory of general relativity, revolutionizing our understanding of gravity as a curvature of spacetime rather than a mere force. His groundbreaking work has had enduring impacts on modern physics and cosmology.
What is the capital of Kyrgyzstan? [ABCD]
Dushanbe
Bishkek
Tashkent
Almaty
Bishkek is the capital and largest city of Kyrgyzstan, serving as the political, economic, and cultural center of the country. Its location and historical background have made it a focal point in Central Asia.
Which economic model explains market equilibrium using intersecting supply and demand curves? [ABCD]
Comparative advantage model
Circular flow model
Supply and demand model
Keynesian multiplier model
The supply and demand model is fundamental to economics, illustrating how market equilibrium is achieved through the intersection of supply and demand curves. This model explains how prices are determined and how resources are allocated in an economy.
Who is the pioneer of the biopsychiatric model in understanding mental disorders? [ABCD]
Sigmund Freud
B.F. Skinner
Carl Jung
Emil Kraepelin
Emil Kraepelin is credited with pioneering the systematic classification of mental disorders, laying the groundwork for the biological perspective in psychiatry. His work set the stage for later developments in understanding mental illnesses through a medical lens.
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