Question

Match the reactants in List-I with the products in List-II.

	List I		List II
A	$H _{2} O + H _{2} S$	i	$\left( H _{3} O ^{+}, HS ^{-}\right)$
B	$H _{2} O + N ^{3-}$	ii	$\left( NH _{3}, OH ^{-}\right)$
C	$H _{2} O + SiCl _{4}$	iii	$\left( OH ^{-}, H _{3} S ^{+}\right)$
D		iv	$\left( SiO _{2}, HCl \right)$
		v	$\left( SiO _{4}^{4-}, Cl _{2}\right)$
		vi	$\left( O _{2}, F ^{-}\right)$
		vii	$\left( HF , OH ^{-}\right)$
		viii	$\left( OH ^{-}, HN _{3}\right)$

The correct answer is

• A. $A \to (i), B \to (viii), C \to (v), D \to (vi)$
• B. $A \to (iii), B \to (ii), C \to (v), D \to (vii)$
• C. $A \to (iii), B \to (viii), C \to (iv), D \to (vii)$
• D. $A \to (i), B \to (ii), C \to (iv), D \to (vi)$

Answer 1

Answer: (D)

The reaction equations for the given reactants are:

(a) $H _{2} O + H _{2} S \longrightarrow HS ^{-}+ H _{3} O ^{+}$

(b) $3 H _{2} O + N ^{3-} \longrightarrow NH _{3}+3 OH ^{-}$

(c) $2 H _{2} O + SiCl _{4} \longrightarrow SiO _{2}+4 HCl$

(d) $H _{2} O + F _{2} \longrightarrow 2 HF +\frac{1}{2} O _{2}$

$\longrightarrow 2 H ^{+}+2 F ^{-}+\frac{1}{2} O _{2}$