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Chemistry Test ...

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  • Question 1
    4 / -1

    Read the following statements carefully and choose the correct answer
    (i) Expansion of a gas in vacuum  is called free expansion.

    (ii) Work is done during free expansion of an ideal gas whether the process is reversible or irreversible

    (iii) No work is done during free expansion of an ideal gas whether the process is reversible or irreversible

    (iv) No work is done during free expansion of an ideal gas when the process is reversible

  • Question 2
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    Which one of the following arrangements represents the correct order of solubility of sparingly soluble salts  respectively?

  • Question 3
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    A mixture of potassium chlorate, oxalic acid and sulphuric acid is heated. During the reaction which element undergoes maximum change in the oxidation number?

  • Question 4
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    When zeolite (hydrated sodium aluminium silicate) is treated with hard water the sodium ions are exchanged with

  • Question 5
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    The first ionisation potential of Na is 5.1 eV. The value of electron gain enthalpy of Na+ will be

  • Question 6
    4 / -1

    Example of a three-dimensional silicate is:

  • Question 7
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    Chlorine in vinyl chloride is less reactive because

  • Question 8
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  • Question 9
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    A dental disease characterised by mottling of teeth is due to presence of a certain chemical element in drinking water. Which is that element?

  • Question 10
    4 / -1

    What type of crystal defect is indicated in the diagram below?

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