1.

(A): Primary cells can be recharged, but secondary cells can not be recharged. (R): Chemical reactions involved in secondary cells are irreversible and in primary cells are reversible.

Answer»

Both 'A' and 'R' are true and 'R' is the CORRECT EXPLANATION of 'A'
Both 'A' and 'R' are true and 'R' is not the correct explanation of 'A'
'A' is true and 'R' is FALSE 
'A' is false and 'R' is false 

ANSWER :D


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