Free Printable Physical Chemistry Quiz

1.

For a second-order reaction, what is the unit of the rate of the reaction?

a)

s^-1

b)

mol L^-1s^-1

c)

mol^-1 L s^-1

d)

mol^-2 L² s^-1

2.

$For\ a\ certain\ reaction,\ a\ plot\ of\ln[A]\ versus\ t\ gives\ a\ straightline\ of\ with\ a\ slope\ of-1.46s-1.\ The\ order\ ofthe\ reaction\ A\ is-$

a)

0

b)

3

c)

1

d)

2

3.

Which of the following is expressions represents correctly rate of following reaction?
X + Y → Z + Q ΔH = +22kj/mol

a)

Rate = +Δ[X] / Δt

b)

Rate = +Δ[Y] / Δt

c)

Rate = +Δ[Z] / Δt

d)

Rate = -Δ[Q] / Δt

4.

How does a catalyst work in speeding up a reaction?

a)

by lowering the activation energy or reaction

b)

by giving them more energy

c)

by making them more available

d)

by increasing the activation energy or reaction

5.

At Equilibrium, $\Delta G$ =

a)

1

b)

0

c)

2

d)

-1

6.

For the reaction...
N_{2 (g)}+ 3 H₂ _(g) <−> 2 NH_{3 (g)}
If the pressure in the system is increased, _______ reaction will be favored.

a)

the forward

b)

the reverse

c)

neither

7.

Le Chatelier's Principle states that:

a)

a disturbing force must be applied to a system in order for it to reach equilibrium.

b)

when a system at equilibrium is disturbed, a new equilibrium constant is established.

c)

when a chemical system at equilibrium is disturbed, the system shifts in order to minimize the effect.

d)

when a chemical system is at equilibrium it is no longer possible to alter the system.

8.

When pressure decreases, in which direction does the equilibrium shift?

a)

The equilibrium shifts in the direction that increases the number of moles of gas.

b)

The equilibrium shifts in the direction that decreases the number of moles of gas.

c)

The equilibrium does not shift.

d)

The equilibrium shifts always shifts to the right.

e)

The equilibrium shifts always shifts to the left.

9.

For which of the following reactions does Kp = Kc?

a)

3Fe(s) + 4H₂O(g) ⇌ Fe₃O₄(s) + 4H₂(g)

b)

C(s) + H₂O(g) ⇌ CO(g) + H₂(g)

c)

2SO₂(g) + O₂(g) ⇌ 2SO₃(g)

d)

H₂(g) + I₂(s) ⇌ 2HI(g)

10.

Ionic product of water increases if

a)

Pressure is reduced

b)

H + is added

c)

OH - is added

d)

Temperature is increased

11.

If acetic acid is mixed with Sodium Acetate then H + Ion concentration will be

a)

Increase

b)

Decrease

c)

Remain unchanged

d)

PH decreases

12.

Which of the following holds good for a solution obeying Raoult's law (i.e., an ideal solution) (where, ΔH = heat of mixing, and ΔV = volume change on mixing ) ?

a)

ΔH = 1

b)

ΔV = 1

c)

ΔH = 0

d)

None of above

13.

If a mixture of A and B boils at a temperature lower than the boiling point of either of the components, what kind of deviation does the mixture show?

a)

No deviation.

b)

Negative deviation from Raoult’s law.

c)

Positive deviation from Raoult’s law.

d)

Maximum and minimum deviation from Raoult’s law.

14.

An example for partially miscible liquid pairs having upper CST is

a)

Phenol-water

b)

nicotine-water

c)

Triphenyl amine-water

d)

Ethanol-water

15.

Phase rule=

a)

F=C-P+2

b)

F=C-P+1

c)

F=C-1+P

d)

P=F-C+2

16.

Stark Einsteins law is applicable to

a)

Primary process

b)

secondary process

c)

chain termination process

d)

thermal reactions

17.

Can you identify the enzyme which is oxidized during Emission of light by fireflies ?

a)

Luciferin

b)

Papain

c)

Ficin

d)

Trypsin

18.

The product of conductivity of an electrolyte and the volume containing one gram mole of the electrolyte is known as

a)

conductance

b)

specific conductance

c)

equivalent conductance

d)

molar conductance

19.

Galvanic cells convert

a)

mechanical energy in to electrical energy

b)

potential energy in to electrical energy

c)

electrical energy in to chemical energy

d)

chemical energy in to electrical energy

20.

Applications of Kohlrausch’s law

a)

Determination of Dissociation constant

b)

Degree of dissociation

c)

Solubility of sparingly soluble salts

d)

All the above

Physical Chemistry Quiz

Total questions: 20

Worksheet time: 14mins

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