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Physical Chemistry MCQ

Photons making an image formed with feeble light arrive _________.

In spurts

Independently

All at once

In an interconnected way.

Answer

Correct Answer: Independently

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The average ages at which an individual displays certain abilities are known as __________.

Fine motor skills

Developmental norms

Prejudice reduction

Error patterns

Answer

Correct Answer: Developmental norms

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Jackson will experience __________ brain growth when he practices the cello.

Early-dependent

Experience-expectant

Early-expectant

Experience-dependent

Answer

Correct Answer: Experience-dependent

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A burning splint will burn more vigorously in pure oxygen than in air because ________.

Oxygen is a catalyst for combustion

Oxygen is a reactant in combustion and the concentration of oxygen is higher in pure oxygen than it is in air

Nitrogen is a product of combustion and the system reaches equilibrium at a lower temperature

Nitrogen is a reactant in combustion and its low concentration in pure oxygen catalyzes the combustion

Oxygen is a product of combustion

Answer

Correct Answer: Oxygen is a reactant in combustion and the concentration of oxygen is higher in pure oxygen than it is in air

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In a chemical reaction, the element 13al will most preferably ________.

Lose three electrons and become positively charged

Number of protons but more neutrons than carbon-12

Six

None of these

Answer

Correct Answer: Lose three electrons and become positively charged

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Cladistic analysis identifies clades on the basis of ______.

The ability to interbreed and produce fertile offspring

Analogous structures unique to each group

Homologous structures unique to each group

Last appearance in the fossil record

Answer

Correct Answer: Homologous structures unique to each group

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The rate law of a reaction is rate = k[d][x]. the units of the rate constant are ________.

Mol L⁻¹ s⁻¹

L mol⁻¹ s⁻¹

Mol2 L⁻² s⁻¹

Mol L⁻¹ s⁻²

L² mol⁻² s⁻¹

Answer

Correct Answer: L mol⁻¹ s⁻¹

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If heat is released by a chemical system, an equal amount of heat will be ____.

Absorbed by the surroundings

Released by the surroundings

Destroyed by the reaction

Released by the universe

Answer

Correct Answer: Absorbed by the surroundings

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An indirect measurement of the speed of molecules is _____.

Temperature

Friction

Energy

Answer

Correct Answer: Temperature

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A quantum of light is a _________.

Spread of light of a single frequency

Packet of photons of the same frequency

Smallest lump of light

Fringe of bright light

Answer

Correct Answer: Smallest lump of light

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The hybridizations of iodine in if3 and if5 are and , respectively.

Sp3 , sp3d

Sp3d , sp3d 2

Sp3d , sp3

Sp3d 2 , sp3d

Sp3 d2, sp3 d2

Answer

Correct Answer: Sp3d , sp3d 2

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It's a good idea to refine___________, which is a good study habit

Your listening skills

Your athletic ability

Your class schedule

None of these

Answer

Correct Answer: Your listening skills

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When proteins are digested, the following molecules can be absorbed: ________.

The presence of a yellow color in the test tube

When the solution in the test tube turns pink (acidic)

Aminopeptidase, carboxypeptidase, and dipeptidase

Amino acids, dipeptides, and tripeptides

Answer

Correct Answer: Amino acids, dipeptides, and tripeptides

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Oxidation is ____

Loss of electrons

Two protons are lost

Reducing

Dissolved

Answer

Correct Answer: Loss of electrons

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The rate of a chemical reaction normally ____

Decreases as temperature increases

Is slowed down by a catalyst

Increases as reactant concentration increases

Decreases as reactant concentration increases

Answer

Correct Answer: Increases as reactant concentration increases

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Of the following, only ________ is a valid unit for reaction rate.

G/L

G/mol

Mol/L−hr

Mol/L

L/atm

Answer

Correct Answer: Mol/L−hr

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Of the following, ________ will lower the activation energy for a reaction.

Increasing the concentrations of reactants

Raising the temperature of the reaction

Adding a catalyst for the reaction

Removing products as the reaction proceeds

Increasing the pressure

Answer

Correct Answer: Adding a catalyst for the reaction

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If a rate law is second order (reactant), doubling the reactant ________ the reaction rate.

Quadruples

True

L mol-1s-1

Heterogeneous

Answer

Correct Answer: Quadruples

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Appropriate units for the speed of a chemical reaction, the reaction rate, are _______.

G/mol

Min

Sec

M/s

Answer

Correct Answer: M/s

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Of the units below, __________ are appropriate for a first-order reaction rate constant.

Ms^-1.

S^-1.

Mol / L

M^-1 s^-1.

L mol^-1 s-1

Answer

Correct Answer: S^-1.

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

1.65 × 10-2

1.98

0.198

3.30 ×10-3

Answer

Correct Answer: 3.30 ×10-3

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The reaction A → B is first order in [A]. Consider the following data. The concentration of a is ________ m after 40.0 s.

0.025

1.3 × 10-2

3.5 × 10-4

1.2

Answer

Correct Answer: 1.3 × 10-2

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Prokaryotes contain _____ ribosomes.

70S

80S

90S

60S

Answer

Correct Answer: 70S

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Of the molecules below, the bond in ________ is the most polar.

HCl

HBr

Answer

Correct Answer: HF

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Of the molecules below, only __________ is nonpolar.

CO2

H2O

NH3

HCl

TeCl2

Answer

Correct Answer: CO2

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Of the following, only ________ is not a state function.

Energy (E)

Enthalpy (H)

Heat (q)

Temperature (T)

Entropy (S)

Answer

Correct Answer: Heat (q)

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Of the following, a 0.1 m aqueous solution of ________ will have the highest freezing point.

Na2SO4

NaCl

Al(NO3)3

K2CrO4

Answer

Correct Answer: K2CrO4

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Of the following, ________ is the most volatile.

CBr4

CCl4

CF4

CH4

C6H14

Answer

Correct Answer: CH4

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Of the following substances, an aqueous solution of ________ will form basic solutions.

NH4Cl, Cu(NO3)2

K2CO3, NH4Cl

NaF only

NaF, K2CO3

NH4Cl only

Answer

Correct Answer: NaF, K2CO3

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Of the following substances, ________ has the highest boiling point.

H2O

CO2

CH4

NH3

Answer

Correct Answer: H2O

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Of the following species, ________ has the largest radius.

Sr2+

Br-

Rb+

Answer

Correct Answer: Br-

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Of the following molecules, only ________ is polar.

BeCl2

CCl4

Cl2

BCl3

NCl3

Answer

Correct Answer: NCl3

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Of the following metals, ________ exhibits multiple oxidation states.

Answer

Correct Answer: Ni

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Nuclear fusion releases energy in the form of _____

Lower nuclei

Heavier nuclei

Strong nuclei

None of these

Answer

Correct Answer: Heavier nuclei

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Neutrons add only ____ to an atom

Velosity

Mass

Pressure

None of these

Answer

Correct Answer: Mass

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In general, as activation energy increases, reaction rate ________.

Goes down regardless of whether the reaction is exothermic or endothermic

Goes down if the reaction is exothermic

Goes down if the reaction is endothermic

Stays the same regardless of whether the reaction is exothermic or endothermic

None of the above

Answer

Correct Answer: Goes down regardless of whether the reaction is exothermic or endothermic

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For a first-order reaction, a plot of versus is linear.

Stratosphere

Straight line

Arrhenius

Ln[A]t,t

Answer

Correct Answer: Ln[A]t,t

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Complete the following sentence: the cathode in a voltaic cell is the electrode _____________.

To which anions from the salt bridge migrate

In which oxidation takes place

To which cations from the salt bridge migrate

In which electrons become available

Answer

Correct Answer: To which cations from the salt bridge migrate

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A specific wave function is called a(n) __________.

Orbital

Bohr orbit

Atomic Orbit

None of these

Answer

Correct Answer: Orbital

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_____ ions are those ions that do not change oxidation number or composition during a reaction.

Spectator ions

Reducing agent

Electrolysis

Oxidation

Oxidation number

Answer

Correct Answer: Spectator ions

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Physical Chemistry MCQ

Photons making an image formed with feeble light arrive _________.

The average ages at which an individual displays certain abilities are known as __________.

Jackson will experience __________ brain growth when he practices the cello.

A burning splint will burn more vigorously in pure oxygen than in air because ________.

In a chemical reaction, the element 13al will most preferably ________.

Cladistic analysis identifies clades on the basis of ______.

The rate law of a reaction is rate = k[d][x]. the units of the rate constant are ________.

If heat is released by a chemical system, an equal amount of heat will be ____.

An indirect measurement of the speed of molecules is _____.

A quantum of light is a _________.

The hybridizations of iodine in if3 and if5 are __________ and __________, respectively.

It's a good idea to refine___________, which is a good study habit

When proteins are digested, the following molecules can be absorbed: ________.

Oxidation is ____

The rate of a chemical reaction normally ____

Of the following, only ________ is a valid unit for reaction rate.

Of the following, ________ will lower the activation energy for a reaction.

If a rate law is second order (reactant), doubling the reactant ________ the reaction rate.

Appropriate units for the speed of a chemical reaction, the reaction rate, are _______.

Of the units below, __________ are appropriate for a first-order reaction rate constant.

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

The reaction A → B is first order in [A]. Consider the following data. The concentration of a is ________ m after 40.0 s.

Prokaryotes contain _____ ribosomes.

Of the molecules below, the bond in ________ is the most polar.

Of the molecules below, only __________ is nonpolar.

Of the following, only ________ is not a state function.

Of the following, a 0.1 m aqueous solution of ________ will have the highest freezing point.

Of the following, ________ is the most volatile.

Of the following substances, an aqueous solution of ________ will form basic solutions.

Of the following substances, ________ has the highest boiling point.

Of the following species, ________ has the largest radius.

Of the following molecules, only ________ is polar.

Of the following metals, ________ exhibits multiple oxidation states.

Nuclear fusion releases energy in the form of _____

Neutrons add only ____ to an atom

In general, as activation energy increases, reaction rate ________.

For a first-order reaction, a plot of ________ versus ________ is linear.

Complete the following sentence: the cathode in a voltaic cell is the electrode _____________.

A specific wave function is called a(n) __________.

_____ ions are those ions that do not change oxidation number or composition during a reaction.

The hybridizations of iodine in if3 and if5 are and , respectively.

For a first-order reaction, a plot of versus is linear.