Question

Match the terms of Column I and Column II.

Column I	Column II
(i) Leclanche cell	(a) Cell reaction, $2H_{2} + O_{2} \to 2H_{2}O$
(ii) Ni-Cd cell	(b) Does not involve any ion in solution and is used in hearing aids
(iii) Fuel cell	(c) Rechargeable
(iv) Mercury cell	(d) Reaction at anode, $Zn \to Zn^{2+} + 2e^{-}$
	(e) Converts energy of combustion into electrical energy

• A. $(i) \to (c); (ii) \to(a); (iii) \to (b); (iv) \to (d)$
• B. $(i) \to (d); (ii) \to(c); (iii) \to (a, e); (iv) \to (b)$
• C. $(i) \to (b); (ii) \to (d); (iii) \to (a); (iv) \to (c)$
• D. $(i) \to (b); (ii) \to (d) ; (iii) \to (c); (iv) \to (a)$

Answer 1

Answer: (B)

Correct answer is (b) $(i) \to (d); (ii) \to(c); (iii) \to (a, e); (iv) \to (b)$