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Chemistry Test ...

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  • Question 1
    4 / -1

    Which one of the following orders presents the correct sequence of the increasing basic nature of the given oxides?

  • Question 2
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    The ratio of the energy difference between first and second, and that between second and third Bohr's orbits is

  • Question 3
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    Aryl halides are less reactive towards nucleophilic substitution than alkyl halides. Which of the following factors is not responsible for this fact?

  • Question 4
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    The correct order of increasing nucleophilicity is

  • Question 5
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    Consider the reaction, CH3CH2CH2Br + NaCN→ CH3CH2CH2CN +NaBr. This reaction will be the fastest in:

  • Question 6
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    A certain quantity of electricity is passed through an aqueous solution of AgNO3 and CuSO4 solution in series. If the mass of Ag deposited is 1.08 g, then the mass of copper deposited will be

  • Question 7
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    Which of the following can possibly be used as an analgesic, without causing addiction and modification?

  • Question 8
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    In which of the following changes is an electron added to antibonding (π∗)orbital?

  • Question 9
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    Calculate the mass of copper that will be deposited at the cathode in the electrolysis of a 0.2M solution of copper sulphate when the quantity of electricity equal to that required to liberate 2.24L of hydrogen at NTP from a 0.1M aqueous sulphuric acid is passed. (Atomic mass of Cu=63.5u)

  • Question 10
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    The bond dissociation energy of B−F in BF3 is 646 kJ per mol whereas that of C−F in CF4 is 515 kJ mol−1. The correct reason for higher bond dissociation energy of B−F bonds than that of C−F bond is

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