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Chemistry Test 148

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Chemistry Test 148
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  • Question 1
    4 / -1

    The rate constant for the reaction,  2N2O5 → 4NO2 + O2 is  3.0 x 10 -5 sec -1. If the rate is 2.40 x 10-5 mol liter-1 sec -1, then the concentration of  N2O5 ( in mol liter-1)

  • Question 2
    4 / -1

    The rate law for a reaction between the substances A and B is given by Rate = k [ A ]n [ B ]m On doubling the concentration of A and halving the concentration of B, the ratio of the new rate to the earlier rate of the reaction will be

  • Question 3
    4 / -1

    Peptisation is a process of

  • Question 4
    4 / -1

    At the critical imcelle concentration (cmc) the surface molecules

  • Question 5
    4 / -1

    Movement of dispersion medium under the influence of electric field is

  • Question 6
    4 / -1

    Adsorption of gases on solid is generally exothermic because

  • Question 7
    4 / -1

    Which of the following forms micelles in aqueous solution above certain concentration ?

  • Question 8
    4 / -1

    Which of the following is most abundant in the earth’s crust?

  • Question 9
    4 / -1

    Borax is prepared by treating colemanite with

  • Question 10
    4 / -1

    On the addition of mineral acid to an aqueous solution of borax, the following compound is formed

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