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Chemistry Test ...

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  • Question 1
    4 / -1

    Which of the following causes laxative effect when present above  500 ppm in water :

  • Question 2
    4 / -1

    Which is not a pair of reducing sugars-

  • Question 3
    4 / -1

    Given the value of their van der Waals’ constant ‘a’ arrange the following gases in the order of their expected liquification pressure  at a temperature T. T is below the critical point  of all the

    gases.

    Gas                     CH4       Kr       N2         Cl2

    ‘a’(atmL2.mol–2) 2.283   2.439   1.408   6.579

  • Question 4
    4 / -1

    Which of the following d-block element has highest stable oxidation state.

  • Question 5
    4 / -1

    Find D

  • Question 6
    4 / -1

    Calculate ΔSuniverse for following chemical reaction 

    C (graphite) +  2H2(g) → CH4(g);

    ΔfH° = –74.81 kJ at 298 K.

    The standard entropies of C (graphite), H2(g) and CH4(g) are 5.740, 130.684 and 186.264 J/K-mol, respectively. 

  • Question 7
    4 / -1

    Some white colourless crystals are heated. A cracking sound is heard and brown fumes are given off and the residue left is yellow-brown in colour. When a glowing splinter is held in the fumes, it is relighted. The fumes consist of : 

  • Question 8
    4 / -1

  • Question 9
    4 / -1

    Which of the following structure is correctly drawn according to fundamental idea of VSEPR theory-

  • Question 10
    4 / -1

    The end products of following reaction would be,  



     

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