Question

Match List I and List II.

List I	List II
a. Dry Cell	p. Primary cell
b. Lead Storage battery	q. 38%$H_{2}S{O}_4$
c. Ni-Cd cell	r. $Mn{O}_2+C$
d. $H_2-O_2$ fuel cell	s. Secondary cell

Select the correct answer using the code given below.

• A. a-p,r: b-q,s: c-s: d-S
• B. a-q,r: b-p,s,: c-p: d-q
• C. a-p, b-s: c-p,s: d-q,r
• D. a-r: b-q: c-q,s: d-p

Answer 1

The correct option is A a-p,r: b-q,s: c-s: d-S

Dry cell is a primary voltaic cell. The cathode (graphite rod) is surrounded by a paste of manganese dioxide and carbon black.
Lead storage battery is a secondary voltaic cell. It uses aqueous sulfuric acid solution ( 38% by mass and density 1.2 g/mL) as an electrolyte.
Ni-Cd cell and hydrogen oxygen fuel cell are secondary voltaic cell.