Question

Match List-I with List-II :

List-I	List-II
Elements	Properties
(a) Li	(i) Poor water solubility of $I^{-}$
(b) Na	(ii) Most abundant element in cell fluid
(c) K	(iii) Bicarbonate salt used in fire extinguisher
(d) Cs	(iv) Carbonate salt decomoses easily on heating

Choose the correct answer from the options given below :

JEE MAIN 2021

• A. (a) - (i), (b) - (iii), (c) - (ii), (d) - (iv)
• B. (a) - (iv), (b) - (iii), (c) - (ii), (d) - (i)
• C. (a) - (iv), (b) - (ii), (c) - (iii), (d) - (i)
• D. (a) - (i), (b) - (ii), (c) - (iii), (d) - (iv)

Answer 1

The correct option is B (a) - (iv), (b) - (iii), (c) - (ii), (d) - (i)

Among alkali and their componds $L{i}_{2}C{O}_3$ is thermally least stable and decomposes easily on heating.

$NaHC{O}_3$ is used as fire extinguisher.

$K$ is most abundant element in cell fluid,

$CsI$ is a covalent compond and has poor water solubility.

$\therefore$ correct answer is (a) - (iv), (b) - (iii), (c) - (ii), (d) - (i)