1.

The correct order of increasing thermal stabilities of the compound is (i)K_2CO_3 , MgCO_3 (ii), CaCO_3 (ii) and BeCO_3 (iv) is:

Answer»

IltIIltIIIltIV
IVltIIltIIIltI
IVltIIltIltIII
IIltIVltIIIltI

Answer :B


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