JEE Main levelSingle correct optionDifficulty 2 of 3g1256
The compound shown is a carbon acid with pKa about 10, far lower than that of methane (about 50). The main reason is that its conjugate base is stabilised by
Ahyperconjugation with the N-O bonds
Ban increase in s-character of the carbon to 50%
Crelief of steric strain
Ddelocalisation of the charge onto the nitro oxygens together with the -I effect of the group
Answer: D
The compound shown is nitromethane. Its carbanion delocalises the negative charge onto the oxygen atoms of the nitro group (a -M effect) and also benefits from the -I effect of the group. Methane's conjugate base has no such stabilisation.