IMPORTANT QUESTION FIR XII CHEMISTRY BOARD 2013

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                                   XII - CHEMISTRY BOARD 2013

IMPORTANT QUESTION--

A--FROM CHAPTER ISOLATION AND EXTRACTION

 ( I am giving here some question which are 100% important for exam)
1-What do you mean by froath flotation process and what is role of NaCN in it ?

2- explain  a)- Zone refining

                   b)- Vapour phase refinig what is role of iodine in it?

B--SOLID STATE

 1-Numerical on density.
2-Schottky and frenkel defect
3- Ferrimagnetism and ferromagnetism

C-SOLUTION
1-Rault law for non volatile solute
2-vant hoff factor
3- NCERT exercise no--2.17,,2.32  ,2.33,,2.40......


i will paste more question soon...








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