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Chemistry Test ...

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  • Question 1
    4 / -1

    A metal in a compound can be displaced by another metal in the uncombined state. Which metal is a better reducing agent in such a case?

  • Question 2
    4 / -1

    In which case change of oxidation number of V is maximum?

  • Question 3
    4 / -1

    The oxidation number of P in Ba(H2PO2)2, Ba(H2PO3)2 and Ba(H2PO4)2 are respectively

  • Question 4
    4 / -1

  • Question 5
    4 / -1

    Which is chlorate (I) ion?

  • Question 6
    4 / -1

    How much heat will be required at constant pressure to form 1.28 kg of CaC2 from CaO(s) & C(s) ?

    Given :

    ΔfH°(CaO, s) = -152 kcal/mol

    ΔfH°(CaC2, s) = -14 kcal/mol

    ΔfH°(CO, g) = -26 kcal/mol

  • Question 7
    4 / -1

    The enthalpy of neutralisation of a weak acid in 1 M solution with a strong base is -56.1 kJ mol-1. If the enthalpy of ionization of the acid is 1.5 kJ mol-1 and enthalpy of neutralization of the strong acid with a strong base is -57.3 kJ equiv-1, what is % ionization of the weak acid in molar solution (assume the acid to be monobasic) ?

  • Question 8
    4 / -1

    From the following data, the heat of formation of Ca(OH)2(s) at 18°C is ………..kcal:

  • Question 9
    4 / -1

    The pKa of a weak acid, HA, is 4.80. The pKb of a weak base, BOH, is 4.78. The pH of an aqueous solution of the corresponding salt, BA, will be -

  • Question 10
    4 / -1

    How many litres of water must be added to litre of an aqueous solution of HCl with a pH of 1 to create an aqueous solution with pH of 2?

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