Introductory General Chemistry MCQs
Introductory General Chemistry MCQs
The following Introductory General Chemistry MCQs have been compiled by our experts through research, in order to test your knowledge of the subject of Introductory General Chemistry. We encourage you to answer these 100+ multiple-choice questions to assess your proficiency.
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1: What is chelate?
A. A liquid form of oxygen
B. Aristocratic title in ancient Greece
C. Organic compound formed by bonding a polydentate ligand to a central metal atom
D. White, waxy substance secreted by bees
2: What is the definition of a chemical?
A. Any matter or substance that has mass.
B. Something that can be felt.
C. Something that is alive.
D. Any living thing.
3: What is a chemical change?
A. A process by which one or more substances are altered to form new substances.
B. A process by which one or more substances are not altered to form new substances.
C. A process by which one or more substances are formed.
D. A process by which one substance is altered to form new substances.
4: What is chemical energy?
A. Energy contained in the internal structure of an atom or molecule
B. The energy needed to break chemical bonds
C. Energy needed to start a chemical reaction
D. Energy released during a chemical reaction
5: What is a chemical equation?
A. Physics equation
B. Math equation
C. History equation
D. Description of a chemical reaction, including the reactants, products, and direction of the reaction.
6: What is reached by a reaction mixture when the rates of forward and reverse reactions have become equal?
A. Physical equilibrium
B. Kinetic equilibrium
C. Thermodynamic equilibrium
D. Chemical equilibrium
7: What is the sum of the partial pressures of all the different gases in a mixture equal to?
A. The total pressure of the mixture
B. The mass of the mixture
C. The mole fraction of each gas
D. The density of the mixture
8: What is the definition for d-Block transition elements?
A. Those transition elements with an unfilled f subshell in common oxidation states
B. Those transition elements with an unfilled d subshell in common oxidation states
C. Those transition elements with an unfilled p subshell in common oxidation states
D. Those transition elements with an unfilled s subshell in common oxidation states
9: What is a decomposition reaction?
A. A reaction in which a single compound reacts to give two or more substances.
B. A reaction in which two or more substances react to give a single compound.
C. A reaction in which one element replaces another in a compound.
D. A reaction in which two elements combine to form a compound.
10: What is the degree of ionization?
A. The rate of reaction of molecules with water to give ions
B. The fraction of molecules that react with water to give ions
C. The amount of water molecules that react to give ions
D. The number of molecules that react with water to give ions
11: What is delocalized bonding?
A. A type of bonding in which a bonding pair of electrons is localized between two atoms
B. A type of bonding in which a bonding pair of electrons is spread over a number of atoms
C. A type of bonding in which a non-bonding pair of electrons is localized between two atoms
D. A type of bonding in which a non-bonding pair of electrons is spread over a number of atoms
12: What is the product of denitrifying bacteria?
A. Gaseous nitrogen
B. Ammonia
C. Nitrous oxide
D. Nitric acid
13: What is density?
A. The mass per unit volume of a substance or solution.
B. The force exerted by a fluid against the walls of the container.
C. The speed at which an object heats up or cools down.
D. The amount of space between particles in an object.
14: What does DNA stand for?
A. Deoxyribose nucleic acid
B. Deoxyribonucleic acid
C. Double nucleic acid
D. Dinucleotide acid
15: What is deposition?
A. The change of a solid to a gas
B. The change of a solid to a liquid
C. The change of a vapor to a solid
D. The change of a liquid to a solid
16: What is the process of Desalination?
A. The process of making water salty
B. The process of making water clean and fit for drinking
C. The process of making water dirty
D. Remove ions from brackish (slightly salty) water or seawater, to make drinkable or industrially usable water
17: What does desalinating water do?
A. Remove ions from brackish or seawater to make it drinkable or usable for industry
B. Add minerals to water
C. Make water more acidic
D. Make water more basic
18: What is the nucleus of a hydrogen-2 atom?
A. Hydrogen
B. Deuteron
C. Proton
D. Neutron
19: What does dextrorotatory refer to?
A. A compound whose solution rotates the plane of polarized light to the left
B. A solid, liquid, or gas that has no plane of polarization
C. A compound whose solution rotates the plane of polarized light to the right
D. A plane of vibration that is perpendicular to the direction of propagation
20: What is the definition of a diamagnetic substance?
A. A substance that is not attracted by a magnetic field or is very slightly repelled by such a field.
B. A substance that is not affected by a magnetic field.
C. A substance that is attracted by a magnetic field.
D. A substance with unpaired electrons.
21: What is diffusion?
A. The process of mixing two or more substances
B. The process by which heat flow occurs from high to low temperature
C. The process whereby a gas spreads out through another gas to occupy the space uniformly
22: What is the name of the method of calculation in which one carries along the units for quantities?
A. Addition
B. Multiplication
C. The Factor-Label Method
D. Dimensional analysis
23: What is the dimensional analysis?
A. The study of the properties of matter in space
B. The method of calculation in which one carries along the units for quantities
C. A way of analyzing the dimension of an object
D. A method of calculating the rate of change
24: What is Dipole moment?
A. A quantitative measure of the degree of charge separation in a molecule
B. A measure of the amount of matter in an object
C. A positive integer equal to the sum of the negative integers
25: What is dipole-dipole force?
A. Force between molecules that are neither ionic nor covalent
B. The force that holds together covalently bonded atoms
C. Attractive intermolecular force resulting from the tendency of polar molecules to align themselves
D. The force of attraction between ions and electrons
26: What is a displacement reaction?
A. A reaction in which an element reacts with a compound, displacing another element from it
B. A reaction in which an element reacts with an atom
C. A physical change in which the size or shape of an object changes
D. A chemical change in which a new substance is formed
27: What is the Kd of a complex ion?
A. The formation constant squared
B. The value of the formation constant
C. The reciprocal, or inverse, value of the formation constant
D. The reciprocal of the formation constant squared
28: What is the value of the dissociation constant of a complex ion?
A. The value of the formation constant.
B. The reciprocal, or inverse, value of the formation constant.
C. The value of the molar concentration.
D. Zero.
29: What is the process of distillation used for?
A. To separate two immiscible liquid substances
B. To separate solid and liquid substances
C. To separate two liquid substances
D. To separate substances of different volatilities
30: What is distillation?
A. The process in which a liquid is vaporized then condensed
B. A process of making alcohol
C. The process of making perfume
D. A process of making essential oils
31: What is Dalton's Law?
A. The total pressure of a gaseous mixture is greater than the sum of the partial pressure of the component gases.
B. There is no relationship between the total pressure of a gaseous mixture and the partial pressure of the component gases.
C. The total pressure of a gaseous mixture equals the sum of the partial pressure of the component gases.
D. The total pressure of a gaseous mixture is less than the sum of the partial pressure of the component gases.
32: What is the name for the element with atomic number 110?
A. Bohrium
B. Darmstadtium
C. Rutherfordium
D. Ununnilium
33: What is a dative bond?
A. Covalent bond between atoms in which one atom provides no electrons for the bond.
B. Covalent bond between atoms in which one atom provides both electrons for the bond.
C. Covalent bond between atoms in which one atom provides one electron for the bond.
D. Ionic bond between atoms.
34: What is a daughter isotope?
A. Product formed after a radioisotope (the parent) undergoes radioactive decay
B. Product formed after a radioisotope (the parent) undergoes nuclear fission
C. Product formed after a radioisotope (the parent) is bombarded by high energy particles
D. Product formed after a radioisotope (the parent) undergoes nuclear fusion
35: What does the de Broglie equation describe?
A. The wave properties of matter
B. Planck's constant
C. The properties of an electron
D. The speed of light
36: What is the method of separating mixtures by removing the liquid layer from a precipitate called?
A. Distillation
B. Filtration
C. Decantation
D. Mixture
37: What is decantation?
A. A dance move
B. A type of alcohol
C. A unit of measurement
D. Separating mixtures by removing the liquid layer from a precipitate
38: What is deflagration?
A. Type of combustion in which flame propagation is greater than 100 m/s and overpressure is greater than 0.5 bar.
B. Type of combustion in which flame propagation is less than 100 m/s and overpressure is greater than 0.5 bar.
C. Type of combustion in which flame propagation is greater than 100 m/s and overpressure is less than 0.5 bar.
D. Type of combustion in which flame propagation is less than 100 m/s and overpressure is less than 0.5 bar.
39: What is the name for a chemical reaction in which one of the products is water?
A. Hydrolysis Reaction
B. Double Replacement Reaction
C. Dehydration Reaction
D. Synthesis Reaction
40: What is a dehydration reaction?
A. Chemical reaction between two compounds in which one of the products is an acid
B. Chemical reaction between two compounds in which one of the products is water
C. Chemical reaction between two compounds in which one of the products is oxygen
D. Chemical reaction between two compounds in which one of the products is a salt
41: What is deliquescence?
A. Process by which a solute dissolves in a solvent.
B. Process by which a salt loses its water of crystallization.
C. Process by which a soluble substance picks up water vapor from the atmosphere to form a solution.
D. Process by which a solvent evaporates to leave a residue of solute.
42: What is a delocalized electron?
A. An electron that is not moving
B. An electron that is not associated with a particular atom or single covalent bond
C. An electron that is associated with a particular atom or single covalent bond
D. An electron that is not associated with a particular ion, atom, or molecule
43: What is the dependent variable?
A. The variable being tested in order to change the independent variable.
B. The variable not being measured.
C. The variable being measured (tested) regardless of changing the independent variable.
D. The variable being measured (tested) in response to changing the independent variable.
44: What is the definition for a dependent variable?
A. The variable being measured in response to changing the dependent variable, with no relation to the independent variable.
B. The variable being changed in order to measure the response of the dependent variable.
C. The variable being measured in response to changing the dependent variable, which is also the variable being changed.
D. The variable being measured in response to changing the independent variable.
45: What does deposition mean?
A. Movement of water
B. Removing of water
C. The process of erosion
D. Settling of sediment or particles onto a surface or the phase change from the vapor to solid phase.
46: What is deprotonation?
A. A chemical reaction in which a radical removes a proton from a molecule
B. A chemical reaction in which a molecule removes a proton from a radical
C. A chemical reaction in which a proton removes a molecule from a radical
D. A chemical reaction in which a proton removes a radical from a molecule
47: What is a derived unit?
A. An SI unit made from one or more base units (e.g., Newton is kg·m/s2)
B. A unit made from a combination of the base units (e.g., Newton is kg·m/s2)
C. A unit made from a combination of the derived units (e.g., Newton is kg·m/s2)
D. An SI unit made from a combination of the base units (e.g., Newton is kg·m/s2)
48: What is a desiccant?
A. A type of cheese
B. A device used to measure humidity
C. A plant with fleshy leaves
D. A chemical agent that picks up water.
49: What is the phase change from vapor to solid called?
A. Desublimation
B. Freezing
C. Condensation
D. Deposition
50: What is the general structure of a detergent?
A. R-N2+, Na+
B. R-NH3, Na+
C. R-SO4-, Na+
D. R-OH, Na+
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Introductory General Chemistry MCQs
