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Chemistry Test - 8

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Chemistry Test - 8
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Weekly Quiz Competition
  • Question 1
    1 / -0

    Metamerism is shown by

    Solution

    Metamerism is shown by the compounds containing different alkyl groups containing at least two carbon atoms each on either sides of the S, O or NH.

  • Question 2
    1 / -0

    Liquids which decompose below their normal boiling point can be distilled at a lower temperature by

    Solution

    Liquids which decompose below their normal boiling point can be distilled at a lower temperature by decreasing the pressure.

  • Question 3
    1 / -0

    0.833 mole of a carbohydrate with empirical formula CH2O, has 1g of hydrogen. Molecular formula of carbohydrate is

    Solution

  • Question 4
    1 / -0

    Which of the following is/are purified by sublimation?

    Solution

    The sublimation process is used for the separation of those solids which sublime on heating from non-volatile solids. The process is generally used for the purification of camphor, naphthalene anthracene, benzoic acid, etc. containing non-volatile impurities.

  • Question 5
    1 / -0

    Which of the following methods of separation is based on the difference in the solubility of an organic compound and its impurities in a suitable solvent?

    Solution

    Crystallisation is based on the principles of solubility - compounds tend to be more stable in hot liquids than they are in cold liquids.

  • Question 6
    1 / -0

    What amount (in g) of bromine will be required to convert 2 g of phenol into 2, 4, 6-tribromophenol?

    Solution

    1 mole of phenol (mol. mass = 94) requires 3 moles of Br2 (mol. mass = 160)

  • Question 7
    1 / -0

    Among the following, the correct order of basicity is

    Solution

  • Question 8
    1 / -0

    In which of the following compounds is sp2 hybridisation absent?

    Solution

  • Question 9
    1 / -0

    Ethene is prepared by

    Solution

  • Question 10
    1 / -0

    Propyne and propene can be distinguished by

    Solution

    Propyne and propane both are unsaturated compounds and give the tests of unsaturation. Both will react with conc. H2SO4, decolourise Br2 in CCl4 and il. KMnO4 solution. Only propyne (which is an alkyne) will give a white precipitate with ammoniacal AgNO3.

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