1.

Nucleophilic addition reaction will be most favoured in :

Answer»

`CH_(3)CH_(2)CH_(2)- oversetoverset(O)("||")C-CH_(3)`
`CH_(3) - oversetoverset(O)("||")C-CH_(3)`
`CH_(3) - CH_(2) - CH_(2) - oversetoverset(O)("||")C-H`
`CH_(3) - oversetoverset(O)("||")C-H`

SOLUTION :Nucleophilic addition is more favourable in aldehydes than in ketones. Because of less steric HINDRANCE and more electrophilicity on carbonyl carbon in aldehydes than that of ketones DUE to + I effect of ALKYL group


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