Review Blue 5
Chemistry Knowledge Challenge
Test your understanding of chemistry concepts with our engaging quiz! This quiz consists of 30 multiple-choice questions covering fundamentals and advanced topics in chemistry.
Key features:
- 30 carefully curated questions
- Multiple-choice format for easy answering
- Instant feedback after each question
The reaction of a metal chloride dioxide produces:
Metal chlorate
Metal perchlorate
B. Metal carbide
A. Metal chlorite
C. Metal oxide
The amount of heat requited to raise the temperature of one gram of a substance by one degree Celsius
A. Specific heat
B. Standard enthalpy
C. Heat capacity
Calorie
Heat of formation
In a family, the topmost element has the smallest:
A. Electronegativity
B. Ionization potential
C. Electron affinity
Atomic size
In reaction , nitrogen changes from the molecular state, N2 to NO2, what happened to nitrogen was:
A. Oxidation
B. Reduction
C. Neutralization
How many moles of sodium are in a mole of sodium thiosulfate?
1
2
3
4
5
6. What is the maximum number of electrons that can be accommodated in the p subshell?
A. 2
5
6
10
14
When a metal binds with a non-metal , the metal will most likely:
A. Donate electron/s
B. Accept electron/s
C. Share its electrons
D. Allows its electron to move in an unfilled orbitals
This states that orbitals of the same energy will be singly filled first with electrons before they are paired.
A. Aufbau principle
B. Hund’s rule
C. Pauli’s Exclusion Principle
N + I rule
Heisenberg Uncertainly Principle
The formula that gives the actual number of atoms is
A. Structural
B. Molecular formula
C. Empirical formula
Chemical formula
The reaction NiCl2 + Zn -------- Ni + ZnCl2 is a _______type of reaction
A. Combination
B. Combustion
C. Decomposition
Single replacement
Metathesis
Which of the following is a characteristic of the gaseous state?
A. The molecules move past one another
B. Is has definite shape
C. The molecules are tightly bonded
Its volume is definite
Graphite is an allotrope of the element______.
Na
Pb
Ca
C
O
This is also known as the salt-forming group of elements
A. Chalcogens
B. Alkali metals
C. Alkaline earth metals
Halogens
Colnage metals
A substance which can act as either an acid or a base.
A. Polymorph
B. Deliquescent
C. Amorphous
Amphoteric
None of the given
Most abundant and essential of all elements
A. aluminum
B. oxygen
C. silicon
Carbon
Hydrogen
The ion that gives the Prussian blue precipitate with potassium ferrocyanide.
A. Ferric
B. Ferrous
C. Zinc
Nickel
Cobalt
Evolves gas with fruity odow when treated with ethanol and concentrated hydrochloric acid
A. Acetate
B. Chlorate
C. Sulfate
Silicate
Chromate
Rochelle salt which is used as a cathartic and also as sequestering agent is:
A. KHC4H4O6
B. KNaC4H4O6
C. KSbC4H4O6
Na2C4H4O6
K2C4H4O6
The most electronegative element in the periodic table is:
S
Cl
F
O
N
Which of the ff. Scientists is/are the author/s of the periodic law?
A. Dalton
B. Proust
C. Charles and Boyle
De Broglie
Meyer and Mendeleev
21. The state of matter which occur only at temperatures near absolute zero.
A. Plasma
B. Solid
C. Bose condensa’es
Liquid
Gas
These are atoms of the same element having the same protons but of different number of neutrons.
A. Isobars
B. Isotones
C. Isomers
Isotopes
Produced by filling an orbital by an electron which is not removed from its atom but is held mutually or share by 2 atoms concerned.
A. Ionic bond
B. Van der Waal’s
C. Hydrogen bond
Metallic bond
Covalent
Salts are formed as result of the reaction between
Acid and base
Water and metal
Metal oxide and water
Non-metal oxide and water
Atoms that are tightly bound together and behave as a single entity
A. Molecule
B. Ion
C. Element
Mixture
This grouping of elements in the periodic table is based on the number of main energy levels filled by the electrons.
A. Family
B. Group
C. Period
A and B
B and C
When an atom accepts an electron it forms a/an
A. Cation
B. Anion
C. Neutrally charged entity
A and B
Substances that completely ionize in water are
A. Non-electrolytes
B. Weak electrolytes
C. Strong electrolytes
Molecular
Covalent
This class of matter exhibits electrical property and optical property known as Tyndall effect.
A. Solution
B. Suspension
C. Emulsion
Colloid
Compound
The product produced from the reaction of a non-metal oxide and water.
A. Base
B. Salt
C. Oxy acid
Binary acid
31. Metals can be coiled in wires because they are
A. Malleable
B. Ductile
C. Lustrous
Good conductors
Brittle
The empirical formula of diphosphorous pentoxide is:
A. P2O5
B. PO2
C. PO3
P2O
PO
33. Which of the following pairs of atoms will most likely form an ionic bond
A. C and O
B. C and Ca
C. C and Cl
C and H
C and S
The percentage of C in sugar ( C12H22O11) if the atomic weight of C=12, H=1 and O=16 is
A. 3.5%
B. 8.3%
C. 42.1%
57.9%
85%
This refers to ability of an atom to attract electrons of another atom to its side.
A. Ionization potential
B. Electronegativity
C. Electron affinity
Diamagnetism
Paramagnetism
Elements in the periodic table are arranged in order of increasing
A. Atomic number
B. Mass number
C. Atomic weight
Atomic size
All of the above
These are electron pair donors.
A. Bronsted Lowry acids
B. Arrhenius bases
C. Lewis acids
Lewis Bases
Arrhenius acids
The law stating that elements combine in a fixed ratio by mass to form compounds.
A. Law of Definite Proportion
B. Law of Multiple Proportion
C. Law of Thermodynamics
Boyle’s Law
Charle’s Law
Number of valence electrons of the element with atomic number 12.
8
6
4
2
1
The sum of atomic masses of all the atoms in a molecule or formula unit.
A. Atomic mass
B. Molar mass
C. Molecular mass
Empirical mass
None of the given
The chemical reaction between an acid and a base that produces salt and water.
A. Oxidation
B. Reduction
C. Neutralization
Combination
Single replacement
A 10-volume hydrogen peroxide solution has a concentration of:
A. 3% w/v
B. 6% w/v
C. 10% w/v
30% w/v
50% w/v
Acts as a blood coagulant in vivo and anticoagulant in vitro:
A. Tartrate ion
B. Citrate ion
C. Phosphate ion
Thiosulfate ion
Sulfate ion
Synonym for Ammonium Carbonate, NF:
A. Spirit of Hartshorn
B. Sal Ammoniac
C. Preston Salt
Spirit of Mindererus
None of the given
9. An official gas that is used in pharmaceutically to mask the disagreeable taste of certain medicines:
A. Carbon Dioxide, USP
B. Nitrogen, USP
C. Helium, USP
Oxygen, USP
What is the chemical name of HCIO3?
A. Hydrochloric Acid
B. Hypochlorous Acid
Chlorous Acid
Chloric Acid
Ions found in the extracellular fluid EXCEPT:
A. Phosphate
B. Chloride
Sodium
Bicarbonate
Itai-itai Disease is caused by poisoning with____.
A. Mercury
B. Cadmium
C. Lead
Iron
Bismuth
Reagent that can differentiate carbonate form bicarbonate ion:
A. 3 N Hydrochloric acid
B. Phenolphthalein TS
Hydrogen Sulfide
Methyl Red TS
The following are regarded as soft acids according to HSAB concept EXCEPT
A. Ag+
B. Hg+2
Al+3
NOTA
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