Stoichiometry MCQs Practice Test - Set 10 - ObjectiveBooks

Stoichiometry MCQs Practice Test - Set 10

Practice Test: Question Set - 10

1. Colligative properties of a dilute solution are those, which depend entirely upon the
    (A) Chemical composition of the solute
    (B) Constitution of the solute
    (C) Number of solute molecules contained in a given volume of the solvent
    (D) None of these

2. Cp - Cv for an ideal gas is equal to
    (A) R
    (B) R/2
    (C) 2R
    (D) 3R

3. Which of the following is not a unit of pressure?
    (A) Parsec
    (B) Kilo-Pascal
    (C) Bar
    (D) Newton/metre2

4. Real gases approach ideal behavior at
    (A) High pressure & high temperature
    (B) Low pressure & high temperature
    (C) High pressure & low temperature
    (D) Low pressure & low temperature

5. If the pH value of a solution changes by one unit, it implies that hydrogen ion concentration in the solution will change ________ times.
    (A) 10
    (B) 20
    (C) 70
    (D) 100

6. In the reaction, represented by Na2CO3 + HC1 → NaHO3 + NaCl, the equivalent weight of Na2CO3 is
    (A) 53
    (B) 5.3
    (C) 106
    (D) 10.6

7. pH value of an alkaline solution is
    (A) 7
    (B) > 7
    (C) < 7
    (D) Constant over a wide range

8. The unit of Cp in S.I. units is
    (A) W/m2.°K
    (B) J/kg.°K
    (C) W/m.°K
    (D) J/m3. °K

9. Which of the following is not used for computing latent heat of vaporization?
    (A) Clausius-Clapeyron equation
    (B) Reference substance plots based on Duhring & Othmer plots
    (C) Kistyakowasky's equation
    (D) Hess's law of constant heat summation

10. 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.
    (A) No change
    (B) Doubling
    (C) 1/4th reduction
    (D) Fourfold increase

11. ________ equation relates latent heat and boiling point.
    (A) Antoine
    (B) Kistyakowsky
    (C) Kopp's
    (D) Trouton's

12. The heat of vaporization ________ with increase in pressure.
    (A) Increases
    (B) Decreases
    (C) Becomes zero at critical pressure
    (D) Both (b) and (c)

13. Refluxing of part of the distillate in a fractionating column is a 'recycling operation', aimed primarily at
    (A) Heat conservation
    (B) Yield enhancement
    (C) Product enrichment
    (D) None of these

14. Cp/Cv for monatomic gases is
    (A) 1.44
    (B) 1.66
    (C) 1.99
    (D) 1

15. The rate of material ________ is zero in case of a steady state system.
    (A) Accumulation
    (B) Production
    (C) Input
    (D) Generation

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