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Chemistry Test ...

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  • Question 1
    4 / -1

    Which of the following has highest coagulating power to coagulate a ferric hydroxide [Fe(OH)3] sol ?

  • Question 2
    4 / -1

    Which of the following is incorrect statement

  • Question 3
    4 / -1

    For the coagulation of 50ml of ferric hydroxide sol. 10ml of 0.5 M KCl is required. What is the coagulation value of KCl ?

  • Question 4
    4 / -1

    A sample of ammonium phosphate, (NH4)3PO4, contains 6 moles of hydrogen atoms. The number of moles of oxygen atoms in the sample is :

  • Question 5
    4 / -1

    A compound contains 69.5% oxygen and 30.5% nitrogen and its molecular weight is 92. The molecular formula of the compound is :-

  • Question 6
    4 / -1

    What volume of CO2 at STP is obtained by thermal decomposition of 20 g KHCO3 ?

    [Atomic weight of K = 39]

    2KHCO3(s) → K2O(s) + 2CO2(g) + H2O(g)

  • Question 7
    4 / -1

    50 g of CaCO3 is allowed to react with 73.5 g of H3PO4. The moles of Ca3(PO4)2 formed in the process is :

  • Question 8
    4 / -1

    According to following reaction :

    A + BO3 → A3O4 + B2O3

    The number of moles of A3O4 produced if 1 mole of A is mixed with 1 mole of BO3.

  • Question 9
    4 / -1

    One mole of ideal gas expands isothermally to ten times its original volume. The change in entropy is:-

  • Question 10
    4 / -1

    What will be the work done when one mole of a gas expands reversible isothermally from 15 L to 50 L at 25°C?

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