Why a dry cell becomes dead after a long...

Why a dry cell becomes dead after a long time even if it is not used ?

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`NH_(4) Cl` is acidic in nature. It corrodes zinc container

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Assertion A dry cell becomes dead after long time even if it has not been used. Reason The NH_(4)Cl solwly and gradually corrods the zinc container.

Both A and R are true and R is the correct explanation of A

Both A and R are true but R is not a correct explanation of A

A is true but R is false

Both A and R are false.

If both assertion and reason are true, and reason is the true explanation of the assertion

if both assertion and reason are true, but reason is not the true explanation of the assertion.

if assertion is true, but reason is false.

If both assertion and reason are false.

Assertion and reason both are correct statements and reason is correct explanation for assertion.

Assertion and reason both are correct statements but reason is not correct explanation for assertion.

Assertion is correct statement but reason is wrong statement.

Assertion is wrong statement but reason is correct statement.