CBSE Class 12 Chemistry 2020 Outside Delhi Set 1 Solved Paper

© examsnet.com
Question : 22
Total: 37
Write the principal of the following refining methods:
(a) vapour phase refining
(b) chromatography.
OR
Write chemical equations involved to obtain:
(a) Cu from Cu2S
(b) Ag from [Ag(CN)2]complex
Solution:  
© examsnet.com
Go to Question: