Match List-I with List - II. List-I (Colloid preparation method) List-II (Chemical reaction) A. Hydrolysis 1. 2\AuCl_3+3\HCHO+3\H_2 \to2\Au(\sol) + 3\HCOOH+6\HCl B. Reduction 2. \As\O_3+3\H_2\S\to\As_2\S_3 (\sol) +3\H_2\O C. Oxidation 3. \SO_2+2\H_2\S\to3\S(\sol)+2\H_2\O D. DoubleDecomposition 4. \FeCl+3\H_2\O\to\Fe(\OH)_3(\sol) +3\HCl Choose the most appropriate answer from the options given below. A B C D [1 Sep 2021 Shift 2]

Correct Answer is : A-4, B-1, C-3, D-2

JEE Main 1-Sep-2021 Shift 2 Solved Paper

Section: Chemistry

Question : 37 of 90

Marks: +1, -0

Match List-I with List - II.

List-I (Colloid preparation method)	List-II (Chemical reaction)
A. Hydrolysis	1. 2AuCl3+3‌HCHO+3H2→2‌Au(sol)+3‌HCOOH+6‌HCl
B. Reduction	2. As‌O3+3H2S→As2S3(sol)+3H2O
C. Oxidation	3. SO2+2H2S→3S(sol)+2H2O
D. DoubleDecomposition	4. FeCl+3H2O→Fe(OH)3(sol)+3‌HCl

Choose the most appropriate answer from the options given below.
A B C D

[1 Sep 2021 Shift 2]

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