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Chemistry Test 80
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Chemistry Test 80
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  • Question 1/4
    4 / -1

    Stereoisomers have different :-

    Solutions

    Configuration (विन्यास)

     

  • Question 2/4
    4 / -1

    6 × 10–3 mole K2 Cr2O7 reacts completely with

    9 × 10–3 mole X+n to give XO–3 and Cr+3. The value of n is:-

    Solutions

    For complete reaction;(valency factor)xth

    geq of K2Cr2O7 = geq of Xth

    or mole of K2Cr2O7 × (valency h factor)K2Cr2O7 

    = moles of Xth ×

    6 × 10–3 × 6 = (5–n)× 9 × 10–3

     

  • Question 3/4
    4 / -1

    Air contains 79% N2 and 21% O2 by volume. If the total pressure is 750 mm of Hg. then the partial pressure of O2 is–

  • Question 4/4
    4 / -1

    X ml H2 gas effuses through a hole in a container in 5 sec. The time taken for the effusion of the same volume of the gas specified below under identical conditions is

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