MCQ
Classical smog is a mixture of :
- A$ \text { Smoke }+\mathrm{SO}_2 $
- B$ \text { Smoke }+\mathrm{H}_2 \mathrm{O} $
- C$ \text { Smoke }+ \text { fog }+\mathrm{H}_2 \mathrm{O} $
- ✓$ \text { Smoke }+ \text { fog }+\mathrm{SO}_2 $
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$\mathop {^ \oplus C{H_2} - CH = CH - CH = N{H_3}}\limits_{(III)} $
Which of these structures is not a valid canonical structure ?
$\mathrm{CH}_2=\mathrm{CH}-\mathrm{CH}=\mathrm{CH}-{ }^{\oplus} \mathrm{NH}_3 ;{ }^{\oplus} \mathrm{CH}_2-\mathrm{CH}=$