ExamVeda
Login
Home
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
Discuss
Answer & Solution
Answer: Option A
No explanation is given for this question. Let's Discuss on Board
12
In which of the following, the entropy decrease?
Discuss
Answer & Solution
Answer: Option A
No explanation is given for this question. Let's Discuss on Board
13
The depolariser used in dry cell is
Discuss
Answer & Solution
Answer: Option A
No explanation is given for this question. Let's Discuss on Board
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?
Discuss
Answer & Solution
Answer: Option C
No explanation is given for this question. Let's Discuss on Board
15
On exposure to moist air, copper gains a green coat on its surface due to formation of which one of the following compounds?
Discuss
Answer & Solution
Answer: Option A
No explanation is given for this question. Let's Discuss on Board
16
Which of the following is/are state function/functions?
1. q + W
2. q
3. W
4. H - TS
Select the correct answer:
Discuss
Answer & Solution
Answer: Option A
No explanation is given for this question. Let's Discuss on Board
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?
Discuss
Answer & Solution
Answer: Option A
No explanation is given for this question. Let's Discuss on Board
18
On the basis of position in the electrochemical series, the metal which does not displace hydrogen from water and acid is
Discuss
Answer & Solution
Answer: Option D
No explanation is given for this question. Let's Discuss on Board
19
Which statement is correct about the fusion of copper?
Discuss
Answer & Solution
Answer: Option B
No explanation is given for this question. Let's Discuss on Board
20
A fan produces a feeling of comfort during hot weather, because
Discuss
Answer & Solution
Answer: Option D
No explanation is given for this question. Let's Discuss on Board