MCQ
Nitration of toluene takes place at
- A$o-$position
- B$m-$position
- C$p-$position
- ✓Both $o-$ and $p-$positions

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is an example of a/an ................ step in a radical chain reaction.
$(ii)$ Number of cyclic structural isomers with molecular formula $C_5H_{10} = Y$
$(iii)$ Number of ether with $M.F. C_4H_{10}O = Z ;X + Y + Z$ is
