See image — AITS & Test Series Chemistry Question

💡 Solution & Explanation

(i) 2 2 1 Na Hg H O NaOH Hg H 2      (ii) 2 3 Na CO X   (iii) 2 2 2 2 4NaOH ZnCl Na ZnO 2NaCl 2H O     (iv)   4 2 3 2 3 2 CuSO Na CO H O CuCO .Cu OH basic copper carbonate     (v) In case of alkali metals, for performing flame test, chlorides are preferred over carbonates as chlorides are more volatile.