General Chemistry MCQs

General Chemistry MCQs

Answer these 1000+ General Chemistry MCQs and assess your grip on the subject of General Chemistry. Scroll below and get started!

1: _____ is a process that helps fuel your metabolism.

A.   Oxidation

B.   Potential; kinetic

C.   Thermodynamics

D.   Light

E.   Calvin cycle

2: _____ make up the nucleus of an atom, whereas _____ surround the nucleus.

A.   Carbohydrates and nucleic acids

B.   Protons & neutrons; electrons

C.   2, hydrophobic, and hydrophilic

D.   Rovers have captured images of bacterial cells within rocks.

3: ________ are particularly polarizable.

A.   Small nonpolar molecules

B.   Small polar molecules

C.   Large nonpolar molecules

D.   Large polar molecules

E.   Large molecules, regardless of their polarity

4: _____, which is released from _____, acts on the ovaries and testes.

A.   Anterior pituitary gland: Antidiuretic hormone

B.   Follicle-stimulating hormone; the anterior pituitary gland

C.   High levels of circulating juvenile hormone inhibiting molting.

D.   Responsive cells express a receptor specific for the hormone.

5: 0.50 mole of nacl is added to 1.0 kg of water. the freezing point of the solution will be ________.

A.   0.00 °C

B.   0.93 °C

C.   -1.86 °C

D.   -0.93 °C

6: 1-methylcyclopentanol is classified as ________.

A.   A primary alcohol

B.   A secondary alcohol

C.   A tertiary alcohol

D.   A phenol

E.   An enol

7: A ______ property describes how a substance acts when it reacts with other substances.

A.   Reactivity

B.   Chemical

C.   Both

D.   None of these

8: A 0.100 m solution of ________ will contain the highest concentration of potassium ions.

A.   Potassium phosphate

B.   Potassium hydrogen carbonate

C.   Potassium hypochlorite

D.   Potassium iodide

E.   Potassium oxide

9: A 17.6-g sample of ammonium carbonate contains ________ mol of ammonium ions.

A.   0.266

B.   0.186

C.   0.366

D.   0.226

10: A bond that is not symmetrical along the axis between two atomic nuclei is a _____.

A.   Pi bond

B.   Polar bond

C.   Covalent bond

D.   Ionic bond

11: A long chain of hydrocarbon bonded to cooh is a ________ acid.

A.   Formic

B.   Carbonic

C.   Amino

D.   Fatty

12: A megamole of titanium contains __________ moles of titanium.

A.   1.0 × 106

B.   1 × 106

C.   Nano-, 1 × 10-9

D.   None of these

13: A mole of red photons of wavelength 725 nm has ________ kj of energy.

A.   1.65

B.   165

C.   227

D.   0.00605

14: A molecule containing a central atom with sp hybridization has a(n) ________ electron geometry.

A.   Trigonal bipyramidal

B.   Octahedral

C.   Trigonal planar

D.   Linear

15: A molecule containing a central atom with sp3d hybridization has a(n) ________ electron geometry.

A.   Trigonal bipyramidal

B.   Octahedral

C.   Trigonal planar

D.   Linear

16: A molecule containing a central atom with sp3d2 hybridization has a(n) ________ electron geometry.

A.   Trigonal bipyramidal

B.   Octahedral

C.   Trigonal planar

D.   Linear

17: A phospholipid is a _____

A.   Nonpolar lipid molecule that is made amphipathic by the addition of a phosphate

B.   Polar lipid molecule that fully interacts with water

C.   Nonpolar lipid molecule that is made polar by the addition of a phosphate

D.   Polar lipid molecule that fully repels water

18: A reaction between an acid and a base is called a(n) ________________ reaction.

A.   Hydro

B.   Ionization

C.   Neutralization

D.   Redox

19: A salt dissolved in water forms _____.

A.   Anions and cations

B.   Only anions

C.   Only cations

D.   Neutral atoms

20: A sample of ch2f2 with a mass of 19 g contains ________ atoms of f.

A.   2.2 × 10^23

B.   38

C.   3.3 × 10^24

D.   4.4 × 10^23

E.   9.5

21: A sample of ch4o with a mass of 32.0 g contains __________ molecules of ch4o.

A.   5.32 × 10^23

B.   1.00

C.   1.88 × 10^22

D.   6.02 × 10^23

E.   32.0

22: A single gram of alcohol contains _____ calories.

A.   7

B.   8

C.   6

D.   5

23: A solution at ph 10 contains __________ than the same amount of solution at ph 8.

A.   100 times less H+

B.   Hydrogen bonds

C.   A higher boiling point

D.   0.032G

E.   Polar

24: A solution of ph 5 has _____ times more hydrogen ions than that of pure water.

A.   10

B.   100

C.   5

D.   50

25: A solution with ph 4 has __________ the h+ concentration of a solution with ph 8.

A.   1/2

B.   2 times

C.   4 times

D.   10,000 times

E.   1/10,000

26: A transmission electron microscope would be the best microscope choice to study _______.

A.   Structures smaller than cells

B.   Single celled organisms

C.   Plant leaves

D.   Amphibian organs

27: A(n) ________ has charge but negligible mass, whereas a(n) ________ has mass but no charge.

A.   Neutrons; proton

B.   Electron; neutron

C.   Ion ; neutron

D.   Electron; proton

28: According to the arrhenius concept, an acid is a substance that __________.

A.   Is capable of donating one or more H+

B.   Causes an increase in the concentration of H+ in aqueous solutions

C.   Can accept a pair of electrons to form a coordinate covalent bond

D.   Reacts with the solvent to form the cation formed by autoionization of that solvent

E.   Tastes bitter

29: According to the arrhenius concept, if hno3 were dissolved in water, it would act as ________.

A.   A base

B.   An acid

C.   A source of hydroxide ions

D.   A source of H- ions

E.   A proton acceptor

30: Aldosterone will ________.

A.   Increases when environmental temperature rises

B.   Intrinsic autoregulatory mechanisms

C.   Increases as blood viscosity increases

D.   Veins are called capacitance vessels or blood reservoirs.

E.   Promote an increase in blood pressure

31: All of the following are forms of radiation except _______ rays

A.   Stabilizing

B.   Beta

C.   Alpha

D.   Gamma

32: Amino acids and glucose enter cells by ________.

A.   Active transport

B.   Passive diffusion

C.   Facilitated diffusion

D.   Endocytosis

33: Ammonia is a ________.

A.   Weak acid

B.   Strong acid

C.   Weak base

D.   Strong acid

E.   Salt

34: An aqueous solution of ________ will produce a basic solution.

A.   NaHSO4

B.   NH4ClO4

C.   NaCl

D.   KBr

E.   Na2SO3

35: An aqueous solution of ________ will produce a neutral solution.

A.   NaF

B.   NH4Br

C.   Rb2CO3

D.   KNO2

E.   NaClO4

36: an electron cannot have the quantum numbers n = __________, l = __________, ml = __________.

A.   2, 0, 0

B.   2, 1, -1

C.   3, 1, -1

D.   1, 1, 1

E.   3, 2, 1

37: An electron is most delocalized in a(n) ______________ orbital.

A.   Atomic

B.   Bonding molecular

C.   Antibonding molecular

38: An implication of hund's rule is that _____.

A.   Electrons fill degenerate orbitals singly first, with parallel spins, before the electrons will pair up

B.   The second ionization energy is always greater than the first ionization energy

C.   The rows in the periodic table grow progressively longer because you are adding sublevels as the n level increases.

D.   If two electrons occupy the same orbital, they must have opposite spin numbers

39: An ion with six protons, seven neutrons, and a charge of 2+ has an atomic number of ________.

A.   Six

B.   Seven

C.   Two

D.   Nine

40: Any reaction that absorbs 150 kcal of energy can be classified as ________.

A.   Activated

B.   Exothermic

C.   Oxidation

D.   Endothermic

41: Approximately____% of all alcohol consumed is metabolized by the liver.

A.   90

B.   80

C.   70

D.   60

42: Arachidonic acid is associated with ________.

A.   Glucose metabolism

B.   Omega-3 fatty acid metabolism

C.   Omega-6 fatty acid metabolism

D.   Cholesterol metabolism

43: At a temperature of ________ °c, 0.444 mol of co gas occupies 11.8 l at 839 torr.

A.   73 °C

B.   379 °C

C.   32 °C

D.   14 °C

E.   106 °C

44: Atomic radius generally increases as we move ________.

A.   A group of atoms/ions that have the same number of electrons.

B.   Down a group and from right to left across a period

C.   Down a group and from left to right across a period

D.   A group of atoms/ions that have the different number of electrons.

45: Based on the octet rule, iodine most likely forms an ________ ion.

A.   I4-

B.   I2+

C.   I+

D.   I4+

E.   I-

46: Bombarding uranium-235 with _____ creates energy through fission.

A.   High energy neutron

B.   Low energy neutron

C.   High energy protron

D.   Low energy protron

47: Buffers are __________.

A.   The opposite ends of the molecule have opposite electrical charges

B.   Substances that minimize changes in the concentration of H+ and OH- in a solution

C.   A compound that donates hydrogen ions to a solution

D.   Are charged molecules that are attracted to the partial charge of the water molecule

48: Carbohydrates typically include ________.

A.   An NH2 group

B.   C, H, and O atoms

C.   A hydrocarbon chain

D.   A PO4 group

49: Carbon-14 in the atmosphere is transformed from _________.

A.   Geiger counter

B.   Electromagnetic

C.   Never

D.   Nitrogen

50: Chirality occurs when stereoisomers have mirror images that are ________.

A.   Alpha-1,2

B.   Ketopentose

C.   Fructose and glucose

D.   Not superimposable

E.   Monosaccharide

51: Collagen, a protein found in tendons and cartilage, would be classified as a ________ protein.

A.   Glutamic acid

B.   Catalytic

C.   Structural

D.   Salt bridges

E.   Tyrosine

52: ____ could be/represent a smaller, charged fragment of the original molecule.

A.   Lower end of the chemical shift range

B.   Middle of the chem shift range

C.   M⁺ would not be observed.

D.   Base peak and radical cations

53: Dacron is a ___________ compound and is produced by a __________ reaction.

A.   Polyester; condensation

B.   Polyester; a diamine with a diacid

C.   Beta decay; condensation

D.   Polyester; increases

54: Dna methylation of cytosine residues __________.

A.   Occurs in the promoter region and enhances binding of RNA polymerase

B.   May be related to the transformation of proto-oncogenes to oncogenes

C.   May be a mechanism of epigenetic inheritance when methylation patterns are repeated in daughter cells

D.   Is a signal for protein degradation

E.   Initiates the acetylation of histones

55: During hybridization, _____.

A.   Identification of individuals based on their DNA profile

B.   Cloning creates genetically identical offspring

C.   Two organisms with desired traits are bred together

D.   A process of breeding organisms because of their specific traits

56: Fibrinogen is a protein produced in platelets that _____.

A.   Fights infections

B.   Prevents hemophilia

C.   Carries oxygen

D.   Creates blood clots

57: Fluids used for an intravenous transfusion must be ________ with bodily fluids.

A.   Isosmotic

B.   Hyperosmotic

C.   Hyposmotic

D.   Neosmotic

58: For a molecule with the formula ab2, the molecular shape is ________.

A.   Linear

B.   Bent

C.   Both

D.   None of these

59: Glucose and galactose are _____ of each other.

A.   Epimers

B.   Enantiomers

C.   Diastereomers

D.   Anomers

E.   None of the above

60: Glycine is the only naturally occurring amino acid that is ________.

A.   Negatively charged

B.   Achiral

C.   Ammonium group

D.   Hydrophobic

61: H2po4- is the conjugate _____ of h3po4 and the conjugate _____ of hpo42−.

A.   Base; acid

B.   Acid; acid

C.   Acid; base

D.   Base; base

62: How many moles of [mn+] are dissolved in that compartment of the microwell plate? _____ mol

A.   10.035 M

B.   9.035 M

C.   8.035 M

D.   7.035 M

63: How many moles of water are produced from the combustion of 0.100 mol pentane, c5h12?____ mol

A.   0.100 mol

B.   0.500 mol

C.   0.600 mol

D.   0.800 mol

E.   None of the above

64: If 50.75 g of a gas occupies 10.0 l at stp, 129.3 g of the gas will occupy ________ l at stp.

A.   26.5

B.   28.5

C.   27.5

D.   25.5

65: In a gas, the distance between the particles is ________.

A.   Very close relative to the size of the molecules

B.   Close relative to the size of the molecules

C.   Fixed relative to the size of the molecules

D.   Small relative to the size of the molecules

E.   Very large relative to the size of the molecules

66: In a neutral solution, the [h+] is _____.

A.   10 ^– 13

B.   10 ^– 17

C.   10 ^– 14

D.   10 ^– 12

67: In a saturated solution of a salt in water, ________.

A.   The rate of crystallization > the rate of dissolution

B.   The rate of dissolution > the rate of crystallization

C.   Seed crystal addition may cause massive crystallization

D.   The rate of crystallization = the rate of dissolution

E.   Addition of more water causes massive crystallization

68: In an equilibrium reaction with a keq of 1 × 10^8, the _____.

A.   Products are favored

B.   The reaction is nonspontaneous

C.   The reaction is endothermic

D.   Reactants are favored.

69: In experimentation, dependent variables are also known as _____________ variables.

A.   Positive proof

B.   Manipulative

C.   Response

D.   None of these

70: In liquids, the attractive intermolecular forces are ________.

A.   Very weak compared with kinetic energies of the molecules

B.   Strong enough to hold molecules relatively close together

C.   Strong enough to keep the molecules confined to vibrating about their fixed lattice points

D.   Not strong enough to keep molecules from moving past each other

E.   Strong enough to hold molecules relatively close together but not strong enough to keep molecules from moving past each other

71: In nature, rings with _____ carbon atoms are the most abundant.

A.   3 or 4

B.   4 or 7

C.   5 or 6

D.   2 or 3

72: In the ionic compound xy3, if x has a charge of __________ then y has a charge of __________.

A.   3+; 1-

B.   2+; 1-

C.   3+; 3-

D.   3+; 2-

73: In the reaction below, δh°f is zero for ________. ni (s) + 2co (g) + 2pf3 (g) → ni(co)2(pf3)2 (l)

A.   Ni(s)

B.   F2 (s)

C.   Co (g)

D.   None of these

74: Large intermolecular forces in a substance are manifested by ________.

A.   Low vapor pressure

B.   High boiling point

C.   High heats of fusion and vaporization

D.   High critical temperatures and pressures

E.   All of these

75: Mixtures can be separated by filtration and distillation. both methods take advantage of _____.

A.   Differences in the chemical properties of the mixtures's components.

B.   Differences in the physical properties of the mixture's components.

C.   Similarities in the chemical properties of the mixture's components

D.   Similarities in the physical properties of the mixture's components

76: Molecule a is a __________.

A.   Triglyceride

B.   Nucleotide

C.   Steroid

D.   Phospholipid

77: N2(g) effuses at a rate that is ______ times that of cl2(g) under the same conditions.

A.   1.59

B.   1.73

C.   1.43

D.   2.16

78: N2(g) effuses at a rate that is ______ times that of kr(g) under the same conditions.

A.   1.59

B.   1.43

C.   1.73

D.   2.16

79: N2(g) effuses at a rate that is ______ times that of xe(g) under the same conditions.

A.   1.73

B.   2.16

C.   1.59

D.   1.43

80: Ne(g) effuses at a rate that is ______ times that of br2(g) under the same conditions.

A.   2

B.   1.98

C.   2.02

D.   2.98

81: Ne(g) effuses at a rate that is ______ times that of kr(g) under the same conditions.

A.   2

B.   1.98

C.   2.03

D.   2.98

82: Of the acids, ________ is the strongest acid.

A.   HCHO2

B.   HClO

C.   HF

D.   HOAc

E.   HOAc and HCHO2

83: One angstrom, symbolized å, is 10-10 m. 1 cm3 = ________ å3.

A.   10^24

B.   10^-24

C.   10^30

D.   10^-30

E.   10^-9

84: One million argon atoms is ________ mol (rounded to two significant figures) of argon atoms.

A.   1.4 × 10-18

B.   1.6 × 10-18

C.   1.5 × 10-18

D.   1.7 × 10-18

85: Oxidation and ________ mean essentially the same thing.

A.   Sulfuric acid

B.   Corrosion

C.   Rusting of iron

D.   None of these

86: Oxygen, nitrogen, and carbon are all _____.

A.   Metalloids

B.   Nonmetals

C.   Metals

D.   Halogens

87: Pesticides are best described as _______.

A.   Polluting chemicals toxic to all living things

B.   Chemicals that destroy 33% of the world's potential food supply

C.   Toxic chemicals used to control weed populations

D.   Toxic chemicals used to control pest populations

88: Production of 13 g of c2h2 requires consumption of ________ g of h2o.

A.   20

B.   18

C.   22

D.   16

89: Slides are placed upside down in a slide projector to correct for the _______ image produced.

A.   Inverted

B.   Magnified

C.   Virtual

D.   Small size of the

90: Small objects denser than water can float on its surface because water has high _____.

A.   Cohesion

B.   Adhesion

C.   Surface tension

91: Sucrose is a _____.

A.   Monosaccharide

B.   Polysaccharide

C.   Disaccharide

D.   All of these

92: The ________ is what needs to be overcome in a reaction so that it can proceed to the products.

A.   Bond energy

B.   Thermodynamics

C.   Entropy

D.   Catalyst

E.   Activation energy

93: The amount of gas that occupies 60.82 l at 31.0 ?c and 367 mm hg is ________ mol.

A.   3.17mole

B.   2.17mole

C.   1.17mole

D.   4.17mole

94: The balanced half-reaction in which sulfate ion is reduced to sulfite ion is a __________ process.

A.   Four-electron

B.   Six-electron

C.   Two-electron

D.   One-electron

E.   Three-electron

95: The length of the side of a cube having a density of 12.6 g/ml and a mass of 7.65 g is ________ cm.

A.   0.857

B.   0.947

C.   0.847

D.   0.647

96: The molecule shown in the accompanying figure is _____.

A.   A hexose

B.   A pentase

C.   A octase

D.   None of these

97: The ph of a solution is defined as the ____________ of the hydrogen ion concentration.

A.   Negative logarithm

B.   Positive logrithum

C.   Zero

D.   None of these

98: The principal reason for the extremely low solubility of nacl in benzene (c6h6) is the ________.

A.   Strong solvent-solvent interactions

B.   Hydrogen bonding in C6H6

C.   Strength of the covalent bond in NaCl

D.   Weak solvation of Na+ and Cl- by C6H6

E.   Increased disorder due to mixing of solute and solvent

99: The products in a decomposition reaction _____

A.   Elements

B.   Compound

C.   Decomposition

D.   Replacement

100: The rate constant of a first-order process that has a half-life of 3.50 min is ________ s-1.

A.   0.693

B.   1.65

C.   1.55

D.   0.593