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Class 12th CBSE 2015 Chemistry Paper Set 3

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Class-12th CBSE
Subject-Chemistry Set 3
year-2015      

Here is some questions:-

1. Out of BaCl2 and KCl, which one is more effective in causing coagulation of a negatively charged colloidal Sol? Give reason.

2. What is the formula of a compound in which the element Y forms ccp lattice and atoms of X occupy 1/3rd of tetrahedral voids?

3. What is the basicity of H3PO4 ?

4. Define azeotropes. What type of azeotrope is formed by positive deviation from Raoult’s law? Give an example.

 

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