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Shweta Garg from Vibgyor high, Vadodara
Subject :NSO    Class : Class 6

_________ can be recharged, but _________ cannot be recharged. Chemical reactions involved in primary cells are _________ and in secondary cells are _________.

APrimary cells, secondary cells, irreversible, reversible.
BSecondary cells, primary cells, irreversible, reversible.
CSecondary cells, primary cells, reversible, irreversible.
DPrimary cells, secondary cells, reversible, irreversible.


Ans 1:

Aarav Gupta from Cambridge International School, Jalandhar
Class : Class 5
b

Ans 2: (Master Answer)

Admin from revisewise, Noida
Class : Class 1

B

The chemical reaction in a primary cell is irreversible and hence cannot be recharged , while in secondary cells the chemical reaction involved can be reversed i.e it can be recharged.


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