Solve 2012 CBSE-Chemistry Question Paper (Set-1) given here.
1. How may the conductivity of an intrinsic semiconductor be increased?
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2. Define 'peptization'.
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3. How is copper extracted from a low grade ore of it?
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7. Write the structure of the product obtained when glucose with nitric acid.
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8. Differentiate between disinfectants and antiseptics.
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