Question

Label the given diagram showing lead storage battery :

	$p$	$q$	$r$
(a)$\,\,$	$Pb\,\,$	$PbO_2\,\,$	$5\,M\,H_2SO_4\,\,$
(b)$\,\,$	$PbO_2\,\,$	$Pb\,\,$	conc. $H_2SO_4\,\,$
(c)$\,\,$	$Pb_3O_4\,\,$	$PbO_2\,\,$	$50\%\,H_2SO_4\,\,$
(d)$\,\,$	$PbO_2\,\,$	$Pb\,\,$	dii. $38\% \,H_2SO_4$

• A. a
• B. b
• C. c
• D. d

Answer 1

Answer: (D)

$PbO_2$ plates act as cathode while $Pb$ plates act as anode. Dilute $(38\%)\, H_2SO_4$ acts as an electrolyte.