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Chemistry Test - 15

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Chemistry Test - 15
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Weekly Quiz Competition
  • Question 1
    3 / -1

    Which of the following co-ordination compounds would exhibit optical isomerism?

    Solution

  • Question 2
    3 / -1

    Which of the following molecules has S-configuration?

    Solution

    The given compound is L (-) glyceraldehyde. That's why it has S - configuration.

  • Question 3
    3 / -1

    The correct order of bond energies of the following bonds is:

    (I) C(sp3)-C(sp3), (II) C(sp2)-C(sp2), (III) C(sp)-C(sp)

    Solution

    The sp hybridised orbital has 50% 's' character.

    The sp2 hybridised orbital has 33% 's' character.

    The sp3 hybridised orbital has 25% 's' character.

    Bond energy increases as the 's' character increases.

    Hence, option (1) is correct.

  • Question 4
    3 / -1

    In sulphur detection of an organic compound, sodium nitroprusside solution is added to sodium extract. Formation of violet colour is due to the presence of

    Solution

    Formation of violet colour is due to the presence of Na3[Fe(CN)5NOSNa]

  • Question 5
    3 / -1

    Cesium hydroxide is a

    Solution

    Caesium hydroxide (CsOH) is a chemical compound consisting of an ion of caesium and a hydroxide ion. It is a strong base (pKb = -1.76), much like the other alkali metal hydroxides such as sodium hydroxide and potassium hydroxide.

  • Question 6
    3 / -1

    Which of the following is paramagnetic?

    Solution

  • Question 7
    3 / -1

    Which of the following compounds is purified by steam distillation?

    Solution

    Aniline is purified by steam distillation.

  • Question 8
    3 / -1

    Which of the following is reduced with zinc and hydrochloric acid to give the corresponding hydrocarbon?

    Solution

  • Question 9
    3 / -1

    Aniline reacts with CHCl3 and KOH to form

    Solution

  • Question 10
    3 / -1

    In the silver plating of copper, K[Ag(CN)2] is used instead of AgNO3. This is because

    Solution

    In the silver plating of copper, K[Ag(CN)2] is used instead of AgNO3. This is because of less availability of Ag+ ions as Cu cannot displace Ag from [Ag(CN)2]- ion

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