Thermochemistry MCQ question and answer with solution | Chemistry Gk MCQs Page-2 section-1

11.
Match the List I with List II.

List-I List-II

a. Primary battery 1. Reaction between Zn and Cu ions to produce an electric current

b. Secondary battery 2. Change of chemical energy to electrical energy

c. Electrochemical cell 3. Lead storage battery

d. Daniell cell 4. Laclanche cell

A. a-4, b-3, c-2, d-1

B. a-3, b-2, c-1, d-4

C. a-2, b-1, c-4, d-3

D. a-1, b-4, c-3, d-2

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12.
In which of the following, the entropy decrease?

A. Crystallisation of sucrose from solution

B. Rusting of iron

C. Melting of ice

D. Vaporisation of camphor

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13.
The depolariser used in dry cell is

A. MnO₂

B. NH₄Cl

C. Carbon

D. ZnCl₂

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14.
Consider the following statements.
1. Galvanic cell converts chemical energy into electrical energy.
2. In a galvanic cell, the electron flow from anode to cathode through the external circuit.
3. Galvanic cell converts metal from its elemental state to the combined state.
Which of the statement(s) given above is/are correct?

A. Only 1

B. Only 2

C. 1 and 2

D. 1, 2 and 3

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15.
On exposure to moist air, copper gains a green coat on its surface due to formation of which one of the following compounds?

A. Copper carbonate

B. Copper oxide

C. Copper sulphate

D. Copper nitrate

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16.
Which of the following is/are state function/functions?
1. q + W
2. q
3. W
4. H - TS
Select the correct answer:

A. 1 and 4

B. 1, 2 and 4

C. 2, 3 and 4

D. Only 1

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17.
For a certain reaction.
ΔG^- = -45 kj/mol and ΔH^- = -90 kj/mol at 0°C.
What is the minimum temperature at which the reaction will become spontaneous, assuming that ΔH^- and ΔS^- are independent of temperature?

A. 273 K

B. 298 K

C. 546 K

D. 596 K

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18.
On the basis of position in the electrochemical series, the metal which does not displace hydrogen from water and acid is

A. Al

B. Pb

C. Ba

D. Hg

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19.
Which statement is correct about the fusion of copper?

A. A solid is formed

B. Heat is required

C. The process is exothermic

D. Heat is released

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20.
A fan produces a feeling of comfort during hot weather, because

A. our body radiates more heat in air

B. fan supplies cool air

C. conductivity of air increases

D. our perspiration evaporates rapidly

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List-I	List-II
a. Primary battery	1. Reaction between Zn and Cu ions to produce an electric current
b. Secondary battery	2. Change of chemical energy to electrical energy
c. Electrochemical cell	3. Lead storage battery
d. Daniell cell	4. Laclanche cell

Thermochemistry MCQ question and answer with solution | Chemistry Gk MCQs

11. Match the List I with List II. List-I List-II a. Primary battery 1. Reaction between Zn and Cu ions to produce an electric current b. Secondary battery 2. Change of chemical energy to electrical energy c. Electrochemical cell 3. Lead storage battery d. Daniell cell 4. Laclanche cell

Answer & Solution

12. In which of the following, the entropy decrease?

Answer & Solution

13. The depolariser used in dry cell is

Answer & Solution

Answer & Solution

15. On exposure to moist air, copper gains a green coat on its surface due to formation of which one of the following compounds?

Answer & Solution

16. Which of the following is/are state function/functions? 1. q + W 2. q 3. W 4. H - TS Select the correct answer:

Answer & Solution

17. For a certain reaction. ΔG- = -45 kj/mol and ΔH- = -90 kj/mol at 0°C. What is the minimum temperature at which the reaction will become spontaneous, assuming that ΔH- and ΔS- are independent of temperature?

Answer & Solution

18. On the basis of position in the electrochemical series, the metal which does not displace hydrogen from water and acid is

Answer & Solution

19. Which statement is correct about the fusion of copper?

Answer & Solution

20. A fan produces a feeling of comfort during hot weather, because

Answer & Solution

11.
Match the List I with List II.

List-I List-II

a. Primary battery 1. Reaction between Zn and Cu ions to produce an electric current

b. Secondary battery 2. Change of chemical energy to electrical energy

c. Electrochemical cell 3. Lead storage battery

d. Daniell cell 4. Laclanche cell

12.
In which of the following, the entropy decrease?

13.
The depolariser used in dry cell is

15.
On exposure to moist air, copper gains a green coat on its surface due to formation of which one of the following compounds?

16.
Which of the following is/are state function/functions?
1. q + W
2. q
3. W
4. H - TS
Select the correct answer:

17.
For a certain reaction.
ΔG^- = -45 kj/mol and ΔH^- = -90 kj/mol at 0°C.
What is the minimum temperature at which the reaction will become spontaneous, assuming that ΔH^- and ΔS^- are independent of temperature?

18.
On the basis of position in the electrochemical series, the metal which does not displace hydrogen from water and acid is

19.
Which statement is correct about the fusion of copper?

20.
A fan produces a feeling of comfort during hot weather, because