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WorksheetsCBRC Gen Chem Mastery
Total questions: 50
Worksheet time: 25mins
Name
Class
Date
1.
It is the splitting of a heavy nucleus into a lighter nucleus.
a)
a. Nuclear Fission
b)
b. Nuclear reaction
c)
c. Radioactivity
d)
d. Nuclear fusion
2.
All of the following is true regarding ionic bond, EXCEPT:
a)
a. Transfer of electrons
b)
b. Hydrochloric acid is an
c)
c. Electrostatic interaction among ions
d)
d. Between metal and a nonmetal
3.
It is a branch of chemistry responsible for the detection and determination of the amount of a specific substance
a)
a. Analytical Chemistry
b)
b. Physical Chemistry
c)
c. Biochemistry
d)
d. Inorganic chemistry
4.
Which of the following is not true regarding the chemical properties of alkali metals?
a)
a. Form white solid hydrides readily when heated in hydrogen gas
b)
b. Only lithium reacts readily with nitrogen, even at room temperature to form a nitride
c)
c. React vigorously with water to form hydrogen gas and a metallic hydroxide
d)
d. Low affinity for oxygen to readily form oxides
5.
It is also known as the “Law of conservation of Energy”
a)
a. 1st Law of Thermodynamics
b)
b. 3rd Law of Thermodynamics
c)
c. 4th Law of Thermodynamics
d)
d. 2nd Law of Thermodynamics
6.
It indicates the main energy levels surrounding a nucleus.
a)
a. Spin quantum number
b)
b. Magnetic quantum number
c)
c. Orbital quantum number
d)
d. Principal quantum number
7.
What is the temperature exerted of the gas at STP?
a)
a. 100 Degrees Celcius
b)
b. B & C *STP
c)
c. 0 Degrees Celcius
d)
d. 273 K
8.
Which of the following halogen has the strongest electronegativity?
a)
a. I
b)
b. Cl
c)
c. F
d)
d. Br
9.
Which of the following is an example of a weak acid?
a)
a. Sulfuric acid
b)
b. Hydrochloric acid
c)
c. Nitric Acid
d)
d. Acetic Acid
10.
Caustic potash is also known as:
a)
a. Potassium chloride
b)
b. Potassium nitrate
c)
c. Potassium hydroxide
d)
d. Potassium carbonate
11.
It states that “the pressure of a fixed amount of a gas at constant temperature is inversely proportional to the volume of the gas”.
a)
a. Avogadro’s Law
b)
b. Charles’ and Gay-Lussac’s Law
c)
c. Boyle’s Law
d)
d. Dalton’s Law
12.
Which of the following is not true regarding metalloid?
a)
a. Poor conductor of electricity
b)
b. Poor conductor of heat
c)
c. Brittle in solid-state
d)
d. Has a characteristic luster
13.
He discovered nuclear fission.
a)
a. Becquerel
b)
b. Roentgen
c)
c. Hahn
d)
d. Compton
14.
It is a type of solution where the solute and the solvent are in equilibrium.
a)
a. Dilute
b)
b. Unsaturated
c)
c. Supersaturated
d)
d. Saturated
15.
These are elements that have the same mass number but different atomic numbers.
a)
a. None of the above
b)
b. Isotone
c)
c. Isobar
d)
d. Isotopes
16.
A type of physical property that depends on the arrangement of atoms in the molecule.
a)
a. Subtractive
b)
b. Additive
c)
c. Constitutive
d)
d. Colligative
17.
It is a reaction that releases energy in the form of heat.
a)
a. Endothermic reaction
b)
b. Both A and B
c)
c. Exothermic reaction
d)
d. None of the above
18.
It is the substance being dissolved in a mixture.
a)
a. B & C
b)
b. Solution
c)
c. Solute
d)
d. Solvent either A nor B
19.
Which of the following scientist proposed the “Solid Sphere Model”?
a)
a. Thompson
b)
b. Dalton
c)
c. Bohr
d)
d. Democritus
20.
It is a state of matter that can be compressed.
a)
a. Gas
b)
b. Solid
c)
c. Plasma
d)
d. Liquid
21.
Which of the following scientist proposed the “Law of Octaves”?
a)
a. Moseley
b)
b. Lavoisier
c)
c. Mendeleev
d)
d. Newlands
22.
It is the equivalent value of Avogadro’s number.
a)
a. 6.022x1021 / mole
b)
b. 6.022x1023 / mole
c)
c. 6.022x1022 / mole
d)
d. 6.022x1024 / mole
23.
Which of the following is not true regarding thermodynamics?
a)
a. Entropy of a pure substance at absolute zero temperature is zero
b)
b. Entropy of the universe only increases and never decreases
c)
c. Energy can be destroyed
d)
d. Deals with the relationship between heat and other forms of energy
24.
It is the sum of the number of protons and neutrons in a nucleus.
a)
a. Atomic symbol
b)
b. Atomic number
c)
c. Molecular weight
d)
d. Mass number
25.
Which of the following is an example of an ionic bonding?
a)
a. Ether
b)
b. Water
c)
c. Sodium chloride
d)
d. Sugar
26.
It states that “the entropy of a system approaches a constant value as the temperature approaches absolute zero”.
a)
a. 2nd Law of thermodynamics
b)
b. 1st Law of thermodynamics
c)
c. 3rd Law of thermodynamics
d)
d. 4th Law of thermodynamics
27.
It is the SI unit of radioactivity.
a)
a. Gray
b)
b. Becquerel
c)
c. Rad
d)
d. Curie
28.
Green vitriol is also known as:
a)
a. Sulfuric acid
b)
b. Calcium sulfate
c)
c. Ferrous sulfate heptahydrate
d)
d. Zinc sulfate
29.
Which of the following is the weakest intermolecular force?
a)
a. Hydrogen bond
b)
b. London Forces
c)
c. Debye Forces
d)
d. Keesom forces
30.
Which of the following is an example of a weak base?
a)
a. Potassium hydroxide
b)
b. Barium hydroxide
c)
c. Sodium hydroxide
d)
d. Ammonium hydroxide
31.
It is also known as dipole – induced dipole interaction.
a)
a. London dispersion force
b)
b. Debye force
c)
c. Keesom force
d)
d. Hydroger bonding
32.
A Scientist/s who introduced “the protonic concept of acid-base reaction”.
a)
a. Arrhenius
b)
b. Bronsted – Lowry
c)
c. Lewis
d)
d. A & B
33.
Rochelle Salt is also known as:
a)
a. Potassium sodium tartrate
b)
b. Potassium bitartrate
c)
c. Sodium tartrate
d)
d. Potassium tartrate
34.
It is an interconversion of matter from solid to gas.
a)
a. Deposition
b)
b. Melting
c)
c. Sublimation
d)
d. Evaporation
35.
Which of the following is not true regarding the characteristics of a gas?
a)
a. Has no volume
b)
b. Easy to compress
c)
c. Free-flowing
d)
d. Expand
36.
Which of the following is true regarding oxidation?
a)
a. Reducing agent undergoes oxidation
b)
b. Decrease in valence
c)
c. Oxidizing agent undergoes oxidation
d)
d. Gains electron
37.
Which of the following is true regarding pure substances?
a)
a. Combination of two or more compounds
b)
b. It cannot be separated by physical method
c)
c. Composed of a solute and a solvent
d)
d. An example is a salt solution
38.
Using the Henderson – Hasselbach equation, if the concentration and volume of the salt and the acid are the same, what is the pH of the buffer solution?
a)
a. Equal to the pka
b)
b. Less than the pka
c)
c. More than the pka
d)
d. Neither A, B nor C
39.
It states that “if a system is subjected to stress, the system will adjust to relieve the stress”.
a)
a. Law of Multiple proportions
b)
b. Law of definite proportions
c)
c. Stoichiometry
d)
d. Le Chatelier’s principle
40.
Which of the following inert gas is used as a general anesthetic?
a)
a. Xenon
b)
b. Argon
c)
c. Krypton
d)
d. Helium
41.
Wood alcohol is also known as:
a)
a. Methyl alcohol
b)
b. Ethyl alcohol
c)
c. Isopropyl alcohol
d)
d. Propyl alcohol
42.
What is the oxidation number of carbonate ion?
a)
a. -1
b)
b. +1
c)
c. +2
d)
d. -2
43.
What is the unit of molar mass?
a)
a. amu
b)
b. g/mol
c)
c. Grams
d)
d. mole
44.
Which is true regarding the solubility of a gas in a liquid.
a)
a. Increase pressure will increase the solubility of the gas.
b)
b. Neither A nor B
c)
c. Increase temperature will increase the solubility of the gas
d)
d. A & B
45.
How many protons are present in an atom of Na?
a)
a. 12
b)
b. 23
c)
c. 11
d)
d. 34
46.
All of the following are examples of physical property, EXCEPT:
a)
a. Density
b)
b. Melting point
c)
c. Refractive index
d)
d. Formation of Bubbles
47.
It is the SI unit of amount of exposure.
a)
a. Rad
b)
b. Curie
c)
c. Bacquerel
d)
d. Gray
48.
It states that “at constant pressure and temperature, the volume of a gas is directly proportional to the number of moles (n) of the gas present”.
a)
a. Avogadro’s Law
b)
b. Charles’ and Gay-Lussac’s Law
c)
c. Dalton’s Law
d)
d. Boyle’s Law
49.
Which of the following member of group VIIB can form a strong oxidizing agent?
a)
a. Re
b)
b. Mn
c)
c. A & C
d)
d. Tc
50.
It is a property of elements which is the ability to attract electrons.
a)
a. Atomic radius
b)
b. Electronegativity
c)
c. Electron affinity
d)
d. Ionization potential
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