Question: The ratio of the molar amounts of H₂S needed to precipitate the metal ions from 20mL each of 1 M Cd(NO₃)₂ and 0.5M CuSO₄ is [CPMT 1997]
(a) 1 : 1
(b) 2 : 1
(c) 1 : 2
(d) Indefinite
Correct Answer: (b) 2 : 1
Question: The ratio of the molar amounts of H₂S needed to precipitate the metal ions from 20mL each of 1 M Cd(NO₃)₂ and 0.5M CuSO₄ is [CPMT 1997]
(a) 1 : 1
(b) 2 : 1
(c) 1 : 2
(d) Indefinite
Correct Answer: (b) 2 : 1
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