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Pure And Impure...

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  • Question 1
    1 / -0

    How can mixture of NH3 and H2 be separated?

  • Question 2
    1 / -0

    Which of the following can be separated by solvent extraction?

  • Question 3
    1 / -0

    Nitrogen and oxygen form three oxides:

    In oxide I, 1.00 gm nitrogen combines with 0.57 gm oxygen.
    In oxide II, 2.00 gm nitrogen combines with 2.24 gm oxygen.
    In oxide III, 3.00 gm nitrogen combines with 5.11 gm oxygen.
    These results are in accordance with the law of

  • Question 4
    1 / -0

    A compound of nitrogen and oxygen on analysis showed that it contained 28 g of nitrogen to every 32 g of oxygen. Which one of the following formulae correctly represents the compound?

  • Question 5
    1 / -0

    If an organic compound has C10H20 as its molecular formula, its empirical formula is

  • Question 6
    1 / -0

    Gypsum is

  • Question 7
    1 / -0

    Red lead is

  • Question 8
    1 / -0

    The phosphate of a metal has the formula: MHPO4. The formula of its chloride will be

  • Question 9
    1 / -0

    Which of the following is the formula of a compound in which a monovalent positive radical combines with chromate radical?

  • Question 10
    1 / -0

    What is the formula of calcium dihydrogen phosphate?

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