Q.

Statement 1: 2-Pentanol and 3-pentanol cannot be distinguished by iodoform test.Statement 2: 2-Pentanol and 3-pentanol both are secondary alcohols.

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a

Both statements 1 and 2 are correct

b

statements 1 is correct and statement 2 is incorrect

c

Statement 1 is incorrect and statement 2 is correct

d

Both Statements1 and  2 are incorrect.

answer is C.

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Detailed Solution

2-Pentanol can be distinguished from 3-pentanol by iodoform test.CH3-C|OHH-CH2-CH2-CH32-pentanol (2o-alcohol)  ;  CH3-CH2-C|OHH-CH2-CH33-pentanol (2o-alcohol)2-pentanol contains CH3CHOH group. Therefore, 2- pentanol will give iodoform test and thus form a yellow precipitate of iodoform (CHI3) whereas the 3-pentanol will not react.
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Statement 1: 2-Pentanol and 3-pentanol cannot be distinguished by iodoform test.Statement 2: 2-Pentanol and 3-pentanol both are secondary alcohols.