Q.

Statement-I: Stability of  RCH2O−>R2CHO−>R3CO−Statement-II: +I effect of alkyl gp increases, polarity of O-H bond increases in alcohols.

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a

Both statements I and II are correct

b

Statement I is correct and statement II is incorrect

c

Statement I is incorrect and statement II is correct

d

Both statements I and II are incorrect

answer is B.

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Detailed Solution

As the number of alkyl groups increases (+I groups) electron density on oxygen atom of alcohol increases, polarity of O-H bond decreases in alcohol. More over increase in the number of +I groups increases the accumulation of negative charge of oxygen atom in alkoxide ion (RO-) and thus decreases the stability. Stability of  RCH2O−>R2CHO−>R3CO−
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Statement-I: Stability of  RCH2O−>R2CHO−>R3CO−Statement-II: +I effect of alkyl gp increases, polarity of O-H bond increases in alcohols.