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a
Nitrates of all alkali metals give NO2 and O2 on heating
b
Except LiHCO3, all the hydrogen carbonates of alkali metals are obtained in solid form
c
Except LiCl, all the chlorides of alkali metals are deliquescent
d
Carbonates of all alkali metals give CO2 on thermal decomposition
answer is B.
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Detailed Solution
4LiNO3→∆2Li2O+4NO2↑+O2↑ 2MNO3M=Na,K,Rb,Cs→∆2MNO2+O2Lithium nitrate undergo decomposition differently when compared to the decomposition of nitrates of other alkali metal nitrates.→ LiHCO3 - It is not solid [liquid]NaHCO3,KHCO3,RbHCO3,CsHCO3 are solids→ LiCl is deliquescent, NaCl is deliquesent due to presence of CaCl2 & MgCl2→ Na2CO3 and other corbonates can't undergo decomposition only Li2CO3 undergoes decomposition Li2CO3→∆Li2O+CO2