Stoichiometry MCQs Practice Test - Set 10 - ObjectiveBooks

# 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
(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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