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Quizzes > General Knowledge & Mixed

Which Statement Is True? General Knowledge Challenge

Quick, free quiz to test your general knowledge. See which of these is true with instant answers.

Editorial: Review CompletedCreated By: Julian CardonaUpdated Aug 25, 2025
Difficulty: Moderate
2-5mins
Learning OutcomesCheat Sheet
Paper art illustration for a trivia quiz on a dark blue background

This quiz helps you figure out which statement is true in each question. Get instant feedback after every pick and learn a quick fact as you go. For more, try our true or false quiz, have a laugh with funny true or false questions, or dive into science with true or false biology questions.

Which of the following statements is true about the Earth's shape?
It is a perfect flat disk with sharp edges.
It is shaped like a perfect cube.
It is an oblate spheroid slightly flattened at the poles.
It is a hollow cylinder with open ends.
The Earth is not a flat disk or cylinder, nor is it a perfect cube. It is an oblate spheroid, meaning it bulges slightly at the equator due to its rotation and is flatter at the poles. This shape has been confirmed by satellite measurements and space observations.
Which of the following statements is true about water's boiling point at sea level?
It boils at 80°C.
It boils at 120°C.
It boils at 100°C.
It boils at 50°C.
At standard atmospheric pressure (sea level), water boils at 100°C (212°F). Lower or higher temperatures occur only under different pressures. This is a fundamental property used to calibrate thermometers.
Which of the following statements is true about why the sky appears blue?
It appears blue due to Rayleigh scattering of sunlight by the atmosphere.
The ocean reflects its color onto the sky, making it blue.
Greenhouse gases absorb all colors except blue, which we see.
It is always green because of forests reflecting light.
Rayleigh scattering causes shorter (blue) wavelengths to scatter more in the atmosphere, making the sky appear blue during the day. The ocean and forests do not influence the sky's color at an atmospheric scale. Greenhouse gases do not selectively absorb other colors to create the blue sky.
Which of the following statements is true about viewing the Great Wall of China from space?
It was constructed by astronauts as a landmark in space.
It cannot be seen from space without aid, contrary to popular belief.
It is clearly visible from the International Space Station without aid.
It can be seen from the Moon with the naked eye.
Despite popular myths, the Great Wall is too narrow and follows natural colors similar to its surroundings, making it indistinct to the unaided eye from low Earth orbit. It certainly cannot be seen from the Moon. Astronauts have confirmed the need for magnification to observe it.
Which of the following statements is true about the speed of light in a vacuum?
Approximately 150,000 km/s.
Approximately 1,000 km/s.
Approximately 300 km/s.
Approximately 299,792 km/s.
The speed of light in a vacuum is exactly defined as 299,792,458 meters per second (about 299,792 km/s). This constant is fundamental to physics and underpins Einstein's theory of relativity. It is not measured in kilometers per hour or drastically different magnitudes.
Which of the following statements is true about honey?
It is the only natural substance that never spoils under proper storage conditions.
It spoils within a year because of yeast fermentation.
It must be refrigerated to remain edible for more than a month.
It turns into a toxic substance after two years.
Honey's low water content and acidic pH inhibit bacterial growth, allowing it to remain edible indefinitely if stored properly. Archaeologists have found edible honey in ancient Egyptian tombs thousands of years old. Other natural substances like grains can spoil due to moisture and microbial activity.
Which of the following statements is true about Mount Everest?
It lies at the geographic South Pole.
It is the longest mountain chain on Earth.
It is an active volcano.
It is the highest mountain above sea level at 8,848 meters.
Mount Everest, located in the Himalayas, is recognized as the Earth's highest point above sea level at 8,848 meters (29,029 feet). It is not a volcanic mountain nor a mountain chain. It does not lie near the South Pole.
Which of the following statements is true about the human heart's daily activity?
It produces insulin as a hormone regulator.
It beats only when you exercise.
It holds digestive enzymes to break down food.
It beats around 100,000 times per day.
The average human heart at rest beats about 60 - 100 times per minute, totaling around 100,000 beats per day. It functions continuously, not just during exercise. It does not produce insulin or digestive enzymes, as those are functions of the pancreas.
Which of the following statements is true about black holes?
They emit visible light continuously.
Nothing can escape once it crosses the event horizon.
They serve as wormholes for instant travel.
They are empty holes in space with no mass.
A black hole's event horizon represents a boundary beyond which nothing, not even light, can escape due to the extreme gravitational pull. They are not empty holes nor proven portals for instant travel. Most black holes emit no light, although surrounding matter can emit radiation.
Which of the following statements is true about inflation in economics?
It measures the total number of goods produced.
It increases the value of money without limit.
It erodes purchasing power over time.
It always leads to economic depression.
Inflation refers to the general increase in prices over time, which reduces the amount of goods or services one unit of currency can buy. It does not indicate output levels directly, nor does it inherently cause depressions. While moderate inflation is common, uncontrolled inflation can harm economies.
Which of the following statements is true about the structure of DNA?
It forms a triple helix stabilized by metal ions.
It is a linear polymer of amino acids.
It is a double helix with two antiparallel strands held by hydrogen bonds.
It consists of a single circular strand only found in eukaryotes.
DNA molecules consist of two strands arranged in a double helix, with complementary nucleotide bases paired by hydrogen bonds. This antiparallel structure is universal across most organisms. Triple helices, circular DNA in eukaryotes, and amino acid polymers are incorrect descriptions.
Which of the following statements is true according to the Brønsted-Lowry definition of acids?
Acids donate protons (H? ions) in an aqueous solution.
Acids accept protons in water.
Acids release hydroxide ions when dissolved.
Acids are neutral compounds with no reactive properties.
According to the Brønsted-Lowry theory, an acid is defined as a substance that donates a proton (H?) to another species. Bases are proton acceptors under this definition. Releasing hydroxide ions describes bases, not acids.
Which of the following statements is true about quantum entanglement?
It only occurs at temperatures above 1,000°C.
It violates the principle of conservation of energy.
Entangled particles maintain correlated states instantaneously, regardless of distance.
It allows faster-than-light communication of information.
Quantum entanglement is a phenomenon where particles share a joint quantum state, so measurements on one immediately affect the other, even if separated. It does not permit faster-than-light messaging because measurement outcomes are random. Entanglement does not violate energy conservation and occurs at quantum scales, not defined by high temperatures.
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Study Outcomes

  1. Differentiate True Statements -

    Learn to identify which of the following is true by examining key clues and evidence in each statement.

  2. Analyze Multiple-Choice Scenarios -

    Apply critical-thinking skills to choose the correct answer when deciding which statement is true.

  3. Enhance Attention to Detail -

    Sharpen your observation skills by carefully reviewing subtle differences across trivia statements.

  4. Apply General Knowledge -

    Test and reinforce your understanding of diverse topics by recalling relevant facts and trivia.

  5. Evaluate Answer Logic -

    Understand why the correct choice is true by breaking down the reasoning behind each answer.

  6. Compare and Share Results -

    Challenge friends with your quiz outcomes and learn from different perspectives to boost engagement.

Cheat Sheet

  1. Classify Statement Types -

    Begin by identifying whether a statement is factual (verifiable data), universal ("all," "never"), conditional ("if…then"), or existential ("some," "at least one"). For instance, "If you heat water to 100 °C at sea level, it boils" is conditional, while "All mammals are warm-blooded" is universal. Remember the mnemonic "F-CUE" (Factual, Conditional, Universal, Existential) to keep them straight.

  2. Spot Key Qualifiers -

    When a quiz prompt asks which statement is true or which of the following is true, watch for qualifiers like "always," "never," "only," or "sometimes." Absolute qualifiers such as "always" and "never" are often false unless tied to a scientific law or definition. A quick tip: treat "always" as a red flag in general trivia unless you're dealing with pure mathematics or dictionary definitions.

  3. Leverage Process of Elimination -

    Cross out options that directly conflict with well-established facts or internal logic to narrow down which of the following statement is true. For example, if two choices contradict each other, at least one must be wrong, making elimination easier. This strategy is endorsed by testing centers like ETS for GRE critical reasoning sections.

  4. Use Context Clues and External Knowledge -

    Draw on the surrounding text or your prior learning to validate true statements - context often contains hidden hints. If a statement mentions a historical date or scientific concept, quickly compare it to reliable sources (e.g., a quick mental check with known formulas or timelines). This approach mirrors how academic researchers verify claims against primary university publications.

  5. Practice with Timed Drills -

    Regularly challenge yourself with short quizzes labeled "which statement is true" or "which of the following is true answer" on platforms like Khan Academy or official GRE practice materials. Time-bound practice builds both speed and accuracy, helping you spot traps under pressure. Track your improvement by reviewing explanations from reputable sources such as college writing centers or educational journals.

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