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Question 1. Real gases approach ideal behaviour at
  1.    High pressure & high temperature
  2.    Low pressure & high temperature
  3.    High pressure & low temperature
  4.    Low pressure & low temperature
Answer: Option B

Question 2. Avogadro number is the number of molecules in one __________ of a gas.
  1.    Gram
  2.    Kilogram
  3.    Gm.mole
  4.    Litre
Answer: Option C

Question 3. The number of atoms of oxygen present in 11.2 litres of ozone (O₃) at N.T.P. are
  1.    3.01 x 10²²
  2.    6.02 x 10²³
  3.    9.03 x 10²⁴
  4.    1.20 x 10²⁴
Answer: Option C

Question 4. One kg of saturated steam at 100°C and 1.01325 bar is contained in a rigid walled vessel. It lias a volume of 1.673 m³. It cools to 98°C ; the saturation pressure is 0.943 bar ; one kg of water vapour under these conditions has a volume of 1.789 m³. The amount of water vapour condensed (in kg) is
  1.    0.0
  2.    0.065
  3.    0.1
  4.    1.0
Answer: Option B

Question 5. In the reaction, represented by Na₂CO₃ + HC₁ → NaHO₃ + NaCl, the equivalent weight of Na₂CO₃ is
  1.    53
  2.    5.3
  3.    106
  4.    10.6
Answer: Option C

Question 6. The heat capacity of a solid compound is approximately equal to the sum of the heat capacities of the constituent elements. This is the statement of
  1.    Law of Petit and Dulong
  2.    Kopp's rule
  3.    Nearnst heat theorem
  4.    Trouton's rule
Answer: Option B