MCQ
A metal used in storage batteries is
- ACopper
- ✓Lead
- CTin
- DNickel
$Pb ( s )+ PbO _2( s )+2 H _2 SO _4( aq ) \rightarrow 2 P bSO _4( s )+2 H _2 O ( g )$
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$C{H_3} - C{H_2} - CH = C{H_2}\xrightarrow[{{H_2}{O_2}}]{{HBr}}$
$C{H_3}CHO\mathop {\xrightarrow{{(i)\,NaCN/HCl}}}\limits_{(ii)\,{H_2}O/{H^ \oplus }/\Delta } (A)\mathop {\xrightarrow{{Fenton}}}\limits_{reagent} (B)$
$(B)$ will be :