Problems from ncert and previous year exams and solution

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Problems  and  solutionfrom ncert and previous year exams  

5. Surface chemistry5
6. General principles and process of Isolation of elements 3
7. p-Block Elements 8
8. d-and f-Block Elements 5
9. Coordination Compounds 3
10. Haloalkanes and Haloarenes 4
11. Alcohols, Phenols and Ethers 4
12. Aldehydes, Ketones and Carboxylic acids 6
13. Organic Compounds containing Nitrogen 4
14. Biomolecules 4
15 polymers3
16.chemistry in everday life3