Home Chemistry Electrochemistry Statement Based Select the incorrect statements from the fol…
Chemistry Electrochemistry Statement Based Single Correct MCQ
Published on: August 13, 2026

Select the incorrect statements from the following.'

A
In the primary batteries, the reaction occurs only once and after use over a period of time battery becomes dead.
A and E
B
In mercury cell, zinc-mercury amalgam and a paste of HgO and carbon is used as cathode and anode respectively.
B, C and D
C
In lead storage battery, during the discharging phase, sulphuric acid is formed as product in overall cell reaction.
A, B, C and D
D
A nickel-cadmium cell has shorter life than the lead storage cell.
(E) Fuel cells are galvanic cells that are designed to convert the energy of combustion into electrical energy.
Choose the correct answer from the options given below.
C, D and E

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Text Solution

Verified by Experts
The correct answer is:
B

Among the given statements, B, C and D are incorrect whereas A and E are correct.

The correct form of and are :

• In mercury cell, mercury amalgam and a paste of HgO and carbon are used as anode and cathode respectively.

• In lead storage battery, during the discharging phase, sulphuric acid is consumed in overall cell reaction.

• A nickel-cadmium cell has longer life than the lead storage battery.

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