Question

Match List-I with List-II.$<divclass="table-responsive"><tableclass="tabletable-bordered"><thead><tr><thcolspan="2">List-I</th><thcolspan="2">List-II</th></tr></thead><tbody><tr><td>A</td><td>$ Cd ( s )+2 Ni ( OH )_3( s ) \rightarrow CdO ( s )+ 2 Ni ( OH )_2( s )+ H _2 O (l)$</td><td>I</td><td>Primarybattery</td></tr><tr><td>B</td><td>$Zn ( Hg )+ HgO ( s ) \rightarrow ZnO ( s )+ Hg (l)$</td><td>II</td><td>Dischargingofsecondarybattery</td></tr><tr><td>C</td><td>$ 2 PbSO _4( s )+2 H _2 O (l) \rightarrow Pb ( s )+ PbO _2( s )+2 H _2 SO _4( aq )$</td><td>III</td><td>Fuelcell</td></tr><tr><td>D</td><td>$ 2 H _2( g )+ O _2( g ) \rightarrow 2 H _2 O ( l )$ IV Charging of secondary battery

• A. (A) - (I), (B) - (II), (C) - (III), (D) - (IV)
• B. (A) - (IV), (B) - (I), (C) - (II), (D) - (III)
• C. (A) - (II), (B) - (I), (C) - (IV), (D) - (III)
• D. (A) - (II), (B) - (I), (C) - (III), (D) - (IV)

Answer 1

Answer: (C)

(a) $Cd(s)+2Ni(OH{)}_3(s)\to CdO(s)+$
$2Ni(OH{)}_2(s)+H_{2}O(l)$
Discharge of secondary Battery
(b) $Zn(Hg)+HgO$ (s) $\to ZnO(s)+Hg(l)$
(Primary Battery Mercury cell)
(c) $2PbS{O}_4(s)+2H_{2}O(l)\to Pb(s)+Pb{O}_2(s)$ $+2H_{2}S{O}_4(aq)$
Charging of secondary Battery
(d) $2H_2(g)+O_2(g)\to 2H_{2}O(l)-$ Fuel cell