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JEE Main 1-Sep-2021 Shift 2 Solved Paper

Question : 37

Total: 90

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

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