Single Option Correct.
1) An aqueous sol.n of MCl2 containing excess KCN, when treated with H2S will precipitate MS only if "M" is-
A) Ni B) Co C) Cu D) Cd
2)A mixture of 2 colourless substanceswas dissolved in water. When gaseous Cl2 was passed thro' the solution, a deep brown colour developed.
Addition of BaCl2 or NaOH to the original solution gives a white ppt.
The mixture contained-
A) NaNO3 & AlCl3 B) NaBr & KCl
C) MgI2 & MgSO4 D) BaSO4 & PbCl2
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4 Answers
13Yea :)
But wat is this thing - a deep brown colour developed when Cl2 was passed...