electrical

Electrolysis and Storage Batteries MCQ With Answers Page - 1

1.

The mass of an ion liberated at an electrode is directly proportional to the quantity of electricity”.

The above statement is associated with

Answer/ Hint      

Answer : C

Explanation :

2.

The charge required to liberate one-gram equivalent of any substance is known as ………. Constant

Answer/ Hint      

Answer : B

Explanation :

3.

The capacity of a cell is measured in

Answer/ Hint      

Answer : B

Explanation :

4.

Active materials of a lead acid cell are

Answer/ Hint      

Answer : D

Explanation :

5.

Sulphation in a lead-acid battery occurs due to

Answer/ Hint      

Answer : D

Explanation :

6.

During the charging of lead-acid cell

Answer/ Hint      

Answer : A

Explanation :

7.

The capacity of lead acid cell does not depend upon its

Answer/ Hint      

Answer : B

Explanation :

8.

During charging the specific gravity of electrolyte of a lead-acid battery

Answer/ Hint      

Answer : A

Explanation :

9.

The active materials on the positive and negative plates of a fully charged lead acid battery are

Answer/ Hint      

Answer : C

Explanation :

10.

When a lead-acid battery is in fully charged condition, the colour of its positive plate is

Answer/ Hint      

Answer : C

Explanation :

11.

The active materials of nickel-iron battery are

Answer/ Hint      

Answer : D

Explanation :

12.

The ratio of ampere-hour efficiency to watt-hour efficiency of a lead-acid cell is

Answer/ Hint      

Answer : B

Explanation :

13.

The best indication about the state of charge on a lead-acid battery is given by

Answer/ Hint      

Answer : C

Explanation :

14.

The storage battery generally used in electric power station is

Answer/ Hint      

Answer : C

Explanation :

15.

The output voltage of a charger is

Answer/ Hint      

Answer : B

Explanation :

16.

Cells are connected in series in order to

Answer/ Hint      

Answer : A

Explanation :

17.

Five 2 v cells are connected in parallel. The output voltage is

Answer/ Hint      

Answer : D

Explanation :

18.

The capacity of a battery is expressed in terms of

Answer/ Hint      

Answer : C

Explanation :

19.

During the charging and discharging of a nickel-iron cell

Answer/ Hint      

Answer : B

Explanation :

20.

As compared to constant-current system, the constant-voltage system of charging a lead acid cell has the advantage of

Answer/ Hint      

Answer : C

Explanation :

21.

A dead storage battery can be revived by

Answer/ Hint      

Answer : D

Explanation :

22.

As compared to a lead-acid cell, the efficiency of a nickel-iron cell is less due to its

Answer/ Hint      

Answer : D

Explanation :

23.

Trickle charging of a storage battery helps to

Answer/ Hint      

Answer : D

Explanation :

24.

Those substance of the cell which take active parts in chemical combination and hence produce electricity during charging and discharging are known as ……… materials

Answer/ Hint      

Answer : B

Explanation :

25.

In a lead-acid cell dilute sulphuric acid (electrolyte) approximately comprises the following

Answer/ Hint      

Answer : C

Explanation :

26.

It is noticed that during charging

Answer/ Hint      

Answer : D

Explanation :

27.

It is noticed that during discharging the following does not happen

Answer/ Hint      

Answer : D

Explanation :

28.

The ampere-hour efficiency of a lead acid cell is normally between

Answer/ Hint      

Answer : D

Explanation :

29.

The watt-hour efficiency of a lead-acid cell varies between

Answer/ Hint      

Answer : C

Explanation :

30.

The capacity of a lead acid cell measured in

Answer/ Hint      

Answer : B

Explanation :

31.

The capacity of a lead-acid cell deepens on

Answer/ Hint      

Answer : D

Explanation :

32.

When the lead acid cell is fully charged the electrolytes assumes ……. Appearance

Answer/ Hint      

Answer : D

Explanation :

33.

The e.m.f of an Edison cell, when fully charged is nearly

Answer/ Hint      

Answer : A

Explanation :

34.

The internal resistance of an alkali cell is nearly ……. Times that of the lead-acid cell

Answer/ Hint      

Answer : D

Explanation :

35.

The average charging voltage for alkali cell is about

Answer/ Hint      

Answer : C

Explanation :

36.

On the average the ampere-hour efficiency of an edition cell is about

Answer/ Hint      

Answer : D

Explanation :

37.

The active material of the positive plates of silver-zinc batteries is

Answer/ Hint      

Answer : A

Explanation :

38.

Lead-acid cell has a life of nearly …….. charges and discharges

Answer/ Hint      

Answer : D

Explanation :

39.

Life of the Edison cell is at least

Answer/ Hint      

Answer : A

Explanation :

40.

The internal resistance of a lead-acid cell is …… that of Edison cell

Answer/ Hint      

Answer : A

Explanation :

Electrolysis and Storage Batteries MCQ With Answers Page - 1
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