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  • 1. 
    If 2 gm of NaOH is present is 200 ml of its solution, its molarity will be

  • 0.25
  • 0.5
  • 5
  • 10

  • 2. 
    The atmospheric pollution is generally measured in the units of

  • mass percentage
  • volume percentage
  • volume fraction
  • ppm

  • 3. 
    A 5% solution of cane-sugar (molecular weight = 342) is isotonic with 1% solution of substance A. The molecular weight of X is

  • 342
  • 171.2
  • 68.4
  • 136.8

  • 4. 
    232 gm of sugar syrup contains 32 gm of sugar. What is the molal concentration of the solution. (a) 0.1

  • 5. 
    H

  • 0.0263 bar
  • 69.16 bar
  • 192 bar
  • 282 bar

  • 6. 
    Atomic mass is equal to

  • number of electrons of an atom
  • sum of the numbers of electrons and protons of an atom
  • sum of the numbers of neutrons and protons of an atom
  • none of these

  • 7. 
    Henry’s law constant for molality of methane is benzene at 298 K is 4.27 × 10

  • 1.78 × 10
  • 17.43
  • 0.114
  • 2.814

  • 8. 
    How much oxygen is dissolved in 100 rnL water at 298 K if partial pressure of oxygen is 0.5 atm and K = 1.4 × 10

  • 22.4 mg
  • 22.4 g
  • 2.24 g
  • 2.24 mg

  • 9. 
    The law which indicates the relation’-hip between solubility of a gas in liquid and pressure rs

  • Raoult’s law
  • Henry’s law
  • Lowering of vapour pressure
  • Van’t Hoff law

  • 10. 
    Among the following substances the lowest vapour pressure is exerted by

  • water
  • alcohol
  • ether
  • mercury
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