Stoichiometry problems
- 1. N2 content in a urea sample was found to be only 42%. What is the actual urea content of the sample? (molecular weight of urea = 60)
Options- A. 80%
- B. 90%
- C. 95%
- D. 98% Discuss
Correct Answer: 90%
- 2. Density of carbon dioxide is __________ kg/Nm3.
Options- A. 44/22400
- B. 44/22.4
- C. 22.4/44
- D. none of these Discuss
Correct Answer: 44/22.4
- 3. Kopp's rule is concerned with the calculation of
Options- A. thermal conductivity.
- B. heat capacity.
- C. viscosity.
- D. surface tension. Discuss
Correct Answer: heat capacity.
- 4. In case of a ternery system involving two liquid components and a solute, the ratio of the concentration of the solute in the two phases at equilibrium is called the distribution co-efficient. The distribution co-efficient depends upon the
Options- A. solute concentration
- B. temperature
- C. both(a) & (b)
- D. neither (a) nor (b) Discuss
Correct Answer: both(a) & (b)
- 5. The heat change for the reaction, C(s) + 2S(s) ? CS2(l), is 104.2 kJ. It represents the heat of
Options- A. formation
- B. solution
- C. combustion
- D. fusion Discuss
Correct Answer: formation
- 6. Heat of solution in a system in which both solute and solvent are liquids is termed as
Options- A. heat of solvation.
- B. heat of hydration.
- C. standard integral heat of solution.
- D. heat of mixing. Discuss
Correct Answer: heat of mixing.
- 7. The evaporation of aqueous solution of sugar causes its molarity to
Options- A. decrease. (b) increase.
- B. remain unchanged.
- C. either (a) or (b); depends on the concentration of the solution. Discuss
Correct Answer: remain unchanged.
- 8. One micron is equal to
Options- A. 10-4 mm
- B. 10-4 cm
- C. 10-6 m
- D. both(b)&(c) Discuss
Correct Answer: both(b)&(c)
- 9. Pick out the wrong statement.
Options- A. 'Reduced temperature' of a substance is the ratio of its existing temperature to its critical temperature, both expressed on celsius scale.
- B. 'Reduced pressure' is the ratio of the existing pressure of a substance to its critical pressure.
- C. 'Reduced volume' is the ratio of the existing molal volume of a substance to its critical molal volume.
- D. none of these. Discuss
Correct Answer: 'Reduced temperature' of a substance is the ratio of its existing temperature to its critical temperature, both expressed on celsius scale.
- 10. CaCO3 contains __________ percent of Ca by weight.
Options- A. 40
- B. 48
- C. 96
- D. 12 Discuss
Correct Answer: 40
More in Chemical Engineering:
Programming
Copyright ©CuriousTab. All rights reserved.