SATHEE: Alcohols and Ethers - Result Question 32

Alcohols and Ethers - Result Question 32

####35. Statement I Solubility of $n$ -alcohol in water decreases with increase in molecular weight.

Statement II The relative proportion of the hydrocarbon part in alcohols increases with increasing molecular weight which permit enhanced hydrogen bonding with water.

$(1988, 2 M)$

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Answer:

Correct Answer: 35. (c)

Solution:

$R - O H \leftarrow$ Hydrophilic

Hydrophobic

Increasing molecular weight increases hydrocarbon $(R)$ proportion that lowers the solubility in water.

Passage 1

Compound $J$ must be benzaldehyde because it on treatment with $K O H$ undergoing Cannizzaro’s reaction producing benzyl alcohol and pot-benzoate $(L)$ .

$C_{6} H_{5} - C H O \overset{K O H}{\to} \underset{benzyl alcohol}{C_{6} H_{5} - C H_{2} O H} + C_{6} H_{5} C O O K (L)$

Also $M$ is aldol condensation product formed from acetophenone

acetophenone $(K)$

$\Rightarrow I = \underset{H_{3} C}{P h} ≻ C = C H - P h$

and $H = P h \underset{\begin{matrix} C H_{3} 3^{\circ} -alcohol \end{matrix}}{\overset{O}{∣} ∣} - C H_{2} - P h$

Alcohols and Ethers - Result Question 32

Answer:

Passage 1

Engineering Preparation

Medical Preparation

NCERT Books & Solutions

Important Resources

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Syllabus

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Sample Mock Test

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Alcohols and Ethers - Result Question 32

Answer:

Passage 1

Engineering Preparation

Medical Preparation

NCERT Books & Solutions

Important Resources

Other Resources

Syllabus

Test Platform

Sample Mock Test

Mentorship

NCERT Exercise Video Solution

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