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MCQs

Total Questions : 1913 | Page 22 of 192 pages
Question 211. A 'limiting reactant' is the one, which decides the __________ in the chemical reacation.
  1.    Equilibrium constant
  2.    Conversion
  3.    Rate constant
  4.    None of these
 Discuss Question
Answer: Option B. -> Conversion
Question 212. The heat of vaporisation __________ with increase in pressure.
  1.    Increases
  2.    Decreases
  3.    Becomes zero at critical pressure
  4.    Both B and C
 Discuss Question
Answer: Option D. -> Both B and C
Question 213. Simultaneous doubling of the absolute temperature of a gas and reduction of its pressure to half, will result in __________ in the volume of the gas.
  1.    No change
  2.    Doubling
  3.    L/4th reduction
  4.    Four fold increase
 Discuss Question
Answer: Option B. -> Doubling
Question 214. The vapour pressure of a solution (made by dissolving a solute in a solvent) is __________ that of the pure solvent.
  1.    Less than
  2.    More than
  3.    Equal to
  4.    Either more or less; depends on the solvent
 Discuss Question
Answer: Option A. -> Less than
Question 215. CaCO₃ contains __________ percent of Ca by weight.
  1.    40
  2.    48
  3.    96
  4.    12
 Discuss Question
Answer: Option A. -> 40
Question 216. Percentage saturation of a vapor bearing gas is always __________ the relative saturation.
  1.    Higher than
  2.    Smaller than
  3.    Equal to
  4.    Either A or B; depends on the system
 Discuss Question
Answer: Option B. -> Smaller than
Question 217. Cp equals Cv at
  1.    0°C
  2.    0°K
  3.    0°F
  4.    0°R
 Discuss Question
Answer: Option B. -> 0°K
Question 218. Specific gravity on API scale is given by the relation(where, G = specific gravity at 15.5°C).
  1.    °API = 200(G - 1)
  2.    °API = (141.5/G) - 131.5
  3.    °API = (140/G) - 130
  4.    °API = 145 - (145/G)
 Discuss Question
Answer: Option B. -> °API = (141.5/G) - 131.5
Question 219. Cp/Cv for monoatomic gases is
  1.    1.44
  2.    1.66
  3.    1.99
  4.    1
 Discuss Question
Answer: Option B. -> 1.66
Question 220. Pick out the wrong statement.
  1.    The evaporation of aqueous solution of glucose causes its molarity to increase
  2.    Both the freezing point as well as boiling point of sea water is more than that of distilled water
  3.    The solution containing equal masses of two liquids 'X' and 'Y' has the same mole fraction of' 'X' and 'Y'
  4.    Both B and C
 Discuss Question
Answer: Option D. -> Both B and C

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