Alkali metals readily react with oxyacids forming corresponding sal...

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Alkali metals readily react with oxyacids forming corresponding salts like \( \mathrm{M}_{2} \mathrm{CO}_{3}, \mathrm{MHCO}_{3}, \mathrm{MNO}_{3}, \mathrm{M}_{2} \mathrm{SO}_{4} \) etc. with evolution of hydrogen. They also dissolve in liquid \( \mathrm{NH}_{3} \) but without the evolution of hydrogen. The
\( \mathrm{P} \) colour of its dilute solution is blue but when it is heated and concentrated then its colour becomes bronze.

W
Among the nitrate of alkali metals which one can be decomposed to its oxide?
(A) \( \mathrm{NaNO}_{3} \)
(B) \( \mathrm{KNO}_{3} \)
(C) \( \mathrm{LiNO}_{3} \)
(D) All of these
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