MCQ
Which of the following polymer is biodegradable?
- A

- B

- ✓

- D







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$MnO_4^ - \, + \,x{e^ - }\,\xrightarrow[{(Alkaline\,\,medium)}]{}MnO_4^{2 - }$
$MnO_4^ - \, + \,y{e^ - }\,\xrightarrow{{(Acidic\,\,medium)}}M{n^{2 + }}$
$MnO_4^ - \, + \,z{e^ - }\,\xrightarrow{{(Neutral\,\,medium)}}Mn{O_2}$


$A.$ During charging of battery, $PbSO _4$ on anode is converted into $PbO _2$
$B.$ During charging of battery, $PbSO _4$ on cathode is converted into $PbO _2$
$C.$ Lead storage battery, consists of grid of lead packed with $PbO _2$ as anode
$D.$ Lead storage battery has $\sim 38 \%$ solution of sulphuric acid as an electrolyte
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