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  • Question
  • 2 litres of nitrogen at N.T.P. weighs __________ gms.


  • Options
  • A. 14
  • B. 2.5
  • C. 28
  • D. 1.25

  • Correct Answer
  • 2.5 


  • Stoichiometry problems


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    • 1. Raoult's law is not applicable to the

    • Options
    • A. solutes which dissociate or associate in the particular solution.
    • B. concentrated solutions.
    • C. both(b)&(c)
    • D. solutions containing non-volatile solute.
    • Discuss
    • 2. A compound was found having nitrogen and oxygen in the ratio 28 gm and 80 gm respectively. The formula of the compound is

    • Options
    • A. N2O4
    • B. N2O5
    • C. N2O3
    • D. none of these
    • Discuss
    • 3. Acidity or alkanity of a solution is expressed by its pH value, which is defined as (where, [H+] = hydrogen ion concentration in the solution).

    • Options
    • A.
    • B.
    • C.
    • D. none of these
    • Discuss
    • 4. The number of water molecules present in a drop of water weighing 0.018 gm is 6.023 x __________

    • Options
    • A. 1026
    • B. 1023
    • C. 1020
    • D. 1019
    • Discuss
    • 5. The atomic heat capacities of all solid elements __________ with decrease in temperature.

    • Options
    • A. increases
    • B. decreases
    • C. remains unchanged
    • D. approach zero at 0°C
    • Discuss
    • 6. The density of a liquid is 1500 kg/m3. Its value in gin/litre will be equal to

    • Options
    • A. 1.5
    • B. 15
    • C. 150
    • D. 1500
    • Discuss
    • 7. The unit of dynamic viscosity is

    • Options
    • A. stoke
    • B. poise
    • C. gm/cm sec.
    • D. both (b) & (c)
    • Discuss
    • 8. The unit of specific heat at constant pressure, Cp, in SI unit is

    • Options
    • A. W/m2°C
    • B. J/kg°K
    • C. W/m°K
    • D. J/m3°K
    • Discuss
    • 9. Cp/Cv for monoatomic gases is

    • Options
    • A. 1.44
    • B. 1.66
    • C. 1.99
    • D. 1
    • Discuss
    • 10. The heats of vaporisation of CS2, C2H5OH &H2O are 26.8, 38.6 & 40.6 KJ/kg mole respectively. The order of decreasing inter-molecular forces in these liquids is

    • Options
    • A. H2O > C2H5OH > CS2
    • B. CS2 > C2H5OH > H2O
    • C. H2O > CS2 > C2H5OH
    • D. CS2 > H2O > C2H5OH
    • Discuss


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