Stoichiometry Multiple Choice Questions and Answers pdf - Set 02 - ObjectiveBooks

Stoichiometry Multiple Choice Questions and Answers pdf - Set 02

Practice Test: Question Set - 02


1. Viscosity of 1 centipoise is equal to 1 Centistoke in case of
    (A) Water
    (B) Mercury
    (C) Carbon tetrachloride
    (D) None of these

2. °API gravity of water at N.T.P. is about
    (A) 0
    (B) 1
    (C) 10
    (D) 100

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

4. Which of the following is insensitive to changes in pressure?
    (A) Heat of vaporization
    (B) Melting point
    (C) Heat of fusion
    (D) Both (b) and (c)

5. The heats of vaporization of CS2, C2H5OH &H2O are 26.8, 38.6 & 40.6 KJ/kg.mole respectively. The order of decreasing inter-molecular forces in these liquids is
    (A) H2O > C2H5OH > CS2
    (B) CS2 > C2H5OH > H2O
    (C) H2O > CS2 > C2H5OH
    (D) CS2 > H2O > C2H5OH

6. 1 BTU/lb.°F is equivalent to __________ kcal/kg.°C.
    (A) 1
    (B) 2.42
    (C) 1.987
    (D) 4.97

7. The gravimetric (i.e., by weight) composition of a vapor saturated gas is independent of the
    (A) Nature of both the gas & the liquid
    (B) Temperature
    (C) Total pressure
    (D) None of these

8. A gas occupies a volume of 283 c.c at 10°C. If it is heated to 20°C at constant pressure, the new volume of the gas will be ________ c.c.
    (A) 283
    (B) 566
    (C) 293
    (D) 141.5

9. Heat of ________ of a fuel is called its calorific value.
    (A) Formation
    (B) Combustion
    (C) Reaction
    (D) Vaporization

10. Dry air is a mixture of
    (A) Vapors
    (B) Gases
    (C) Both (a) & (b)
    (D) Neither (a) nor (b)

11. A solution having a pH value of 5 is less acidic than the one having a pH value of 2 by a factor of
    (A) 3
    (B) 100
    (C) 1000
    (D) None of these

12. An equation for calculating vapor pressure is given by, log10 P = A - B(t + c). This is called the
    (A) Kistyakowsky equation
    (B) Antoine equation
    (C) Kopp's rule
    (D) Trouton's rule

13. The heat evolved in the combustion of benzene is represented by the equation:

C6H6 + 7.5 O2 = 6CO2 + 3H2O, ΔH = 3264.6 kJ/kg. mole 
The heat energy change, when 39 gm of C6H6 is burnt in an open container, will be ________ kJ/kgmole.

    (A) +816.15
    (B) +1632.3
    (C) -1632.3
    (D) -2448.45

14. The reaction A + B → C has been conducted in a reactor as shown below. The numbers of balances (material) that can be made around the reactor are

    (A) 1
    (B) 2
    (C) 3
    (D) 4

15. A gas at 0°C is cooled at constant pressure until its volume becomes half the original volume. The temperature of the gas at this state will be
    (A) -136.5°C
    (B) -136.5°K
    (C) -273°C
    (D) 0°K

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