JEE Main 2022 · 27 Jun · Shift 1 · Chemistry Q69

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ChemistryList match+4 / -1Question 69 of 90

Match List - I with List - II.

Choose the correct answer from the options given below :

List - I (Si-Compounds)

A
$\mathrm{(CH_3)_4Si}$
B
$\mathrm{(CH_3)Si(OH)_3}$
C
$\mathrm{(CH_3)_2Si(OH)_2}$
D
$\mathrm{(CH_3)_3Si(OH)}$

List - II (Si-Polymeric/Other Products)

I
Chain Silicone
II
Dimeric Silicone
III
Silane
IV
2D - Silicone

(A) - (III), (B) - (II), (C) - (I), (D) - (IV)

(A) - (IV), (B) - (I), (C) - (II), (D) - (III)

(A) - (II), (B) - (I), (C) - (IV), (D) - (III)

(A) - (III), (B) - (IV), (C) - (I), (D) - (II)

Answer and worked solution

Official answer: D

Functionality. $\mathrm{(CH_3)_4Si}$ is a silane (III); $\mathrm{CH_3Si(OH)_3}$ (three OH) cross-links to a 2D silicone (IV); $\mathrm{(CH_3)_2Si(OH)_2}$ gives chains (I); $\mathrm{(CH_3)_3SiOH}$ can only dimerise (II).

(D)

Topics:Silicates and silicones

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JEE Main 2022 · 27 Jun · Shift 1, Chemistry question 69