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Chemistry Test ...

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  • Question 1
    4 / -1

    Which of the following is correct regarding CH2F2?

  • Question 2
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    Which of the following equations correctly represents the standard heat of formation (ΔHf0) of methane?

  • Question 3
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    If C6H6(I) + 15/2 O2(g)→3H2O(I) + 6CO2(g); ΔH= – 3264.6 kJ mol–1, then the energy obtained by burning 3.9 g of benzene in the air is

  • Question 4
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    A 0.1 M aqueous solution of a weak acid is 2% ionised. If the ionic product of water is 1 x 10-14 mol2 dm-6, then [OH-] is

  • Question 5
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    In which of the following reactions does H2O2 act as a reducing agent?

  • Question 6
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    Directions: In the following question, a statement of assertion is given, followed by a corresponding statement of the reason below it. Choose the correct option.

    Assertion: Cu2+ and Cd2+ are separated by first adding KCN solution and then, passing H2S gas.

    Reason: KCN reduces Cu2+ to Cu+ and forms a complex with it.

  • Question 7
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    A reaction was found to be in second order with respect to the concentration of carbon monoxide. If the concentration of carbon monoxide is doubled with everything else kept the same, the rate of reaction will

  • Question 8
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    What volume of 0.1 M ethanol is required for the preparation of 5.6 g of C2H4 using concentrated H2SO4?

  • Question 9
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    For gases at a constant volume, the correct relation for heat is

  • Question 10
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    The gas-phase reaction of nitric oxide and bromine yields nitrosyl bromide as 2NO(g) + Br2(g) →2NOBr(g). What is the order of the reaction?

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