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Chemistry Test ...

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  • Question 1
    4 / -1

    The ratio of number of σ‑bond to π‑bond in N2 and CO molecules are

  • Question 2
    4 / -1

    The state of hybridisation of central atom in dimer form of both BH3 and BeH2 is

  • Question 3
    4 / -1

    For H3PO3 and H3PO4, the correct choice is

  • Question 4
    4 / -1

    In diamond, carbon atom occupy fcc lattice points as well as alternate tetrahedral voids. If edge length of the unit cell is 356 pm, then diameter of carbon atom is :-

  • Question 5
    4 / -1

    A sample of an ideal gas is expanded 1 m3 to 3 m3  in a reversible process for which P = KV2, with K = 6 bar/m6. Work done by the gas is :-

  • Question 6
    4 / -1

    Directions For Questions

    Fe2O3(s) may be converted to Fe by the reaction :-

    for which KC = 8 at temp. 720ºC

    ...view full instructions

    What percentage of the H2 remains unreacted after the reaction has come to equilibrium ?

  • Question 7
    4 / -1

    Which of the following option show correct matches :-

      Column-I   Column-II
    (a) Precipitation of
    colloidal sol    		 (p) Peptization
    (b) Purification of
    colloid    		 (q) Coagulation
    (c) Gold Number (r) Desorption
    (d) Formation of
    colloidal sol    		 (s) Dialysis
        (t) Measure of
    protective power

  • Question 8
    4 / -1

    3 moles of FeSO4 are oxidised by "a" mole of K2Cr2O7 in acidic medium whereas 3 moles of FeC2O4 are oxidised by "b" mole of K2Cr2O7 in acidic medium, the ratio of "a" and "b" is :-

  • Question 9
    4 / -1

    The rate constant of a first order reaction is 3 × 10–6 per sec. If the initial concentration is 0.10 M, the initial rate of reaction is :-

  • Question 10
    4 / -1

    7.6gm KBr in 1250 ml solution was found to have an osmotic pressure of 1.804 atm at 27°C. Calculate degree of dissociation in % -

    (Atomic weight K = 39, Br = 80)

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