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Chemistry Test 144
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Chemistry Test 144

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  • Question 1/10
    4 / -1

    The degree of association  is given by the expression

  • Question 2/10
    4 / -1

    The average osmotic pressure of human blood is 7.8 bar at 37oC. What is the concentration of an aqueous NaCl solution that could be used in blood stream?

    Solutions

    Nacl should lie isotonic with

    blood

    πblood​=CNacl​RT×i

    7.8 = C×0.0821 × 310 × 2

    C = 0.153 mole−1

    The concentration of on

    aqueous Nacl solution that

    is used in blood stream

    is 0.15 mol/L

     

  • Question 3/10
    4 / -1

    Which of the following ions has smallest radii ?

  • Question 4/10
    4 / -1

    The yellow colour of chromates changes to orange on acidification due to formation of

  • Question 5/10
    4 / -1

    Which of the following is an acidic oxide ?

  • Question 6/10
    4 / -1

    Malachine is a mineral of

  • Question 7/10
    4 / -1

    The flux used in smelting of copper ores is

  • Question 8/10
    4 / -1

    In the reaction between CuSO4 and KI, a white precipitate is obtained. The precipitate has the composition

  • Question 9/10
    4 / -1

    An alloy which does not contain copper, is

  • Question 10/10
    4 / -1

    Lucas reagent is

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