Q.

All the following can decompose on heating except

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a

CaCO3

b

Na2CO3

c

Li2CO3

d

BeCO3

answer is B.

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Detailed Solution

Beryllium carbonate is highly unstable and cannot exist at room temperature. It must be stored in an atmosphere of carbondioxide to prevent its decomposition.All the second group carbonates and Lithium carbonate decompose on heating;No first group carbonate other than Lithium carbonate decomposes on heating:
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