Discussion
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- Question
CaCO3 contains __________ percent of Ca by weight.
Options- A. 40
- B. 48
- C. 96
- D. 12
- Correct Answer
- 40
- 1. 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
- 2. One micron is equal to
Options- A. 10-4 mm
- B. 10-4 cm
- C. 10-6 m
- D. both(b)&(c) Discuss
- 3. 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
- 4. 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
- 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
- 6. 1 kgf/cm2 is not equal to
Options- A. 1 torr
- B. 1 bar
- C. 10000 mm wc
- D. 100 KPa = 100 000 N/m2 Discuss
- 7. The rate of material __________ is zero in case of a steady state system.
Options- A. accumulation
- B. production
- C. input
- D. generation Discuss
- 8. Which of the following is not a colligative property?
Options- A. Osmotic pressure
- B. Depression of freezing point
- C. Lowering of vapor pressure
- D. none of these. Discuss
- 9. Pick out the wrong unit conversion of calorific value.
Options- A. 1 kcal/kg = 1.8 BTU/lb = 4.186 kJ/kg.
- B. 1 BTU/ft3 = 8.9 kcal/m3 = 0.038 MJ/m3.
- C. 1 BTU/lb = 2.3 kcal/kg.
- D. 1 kcal/m3 = 0.1124 BTU/ft3. Discuss
- 10. Which of the following is not a unit of pressure?
Options- A. Torr
- B. Newton/m2
- C. Parsec
- D. Ata, bar or pascal Discuss
Stoichiometry problems
Search Results
Correct Answer: 'Reduced temperature' of a substance is the ratio of its existing temperature to its critical temperature, both expressed on celsius scale.
Correct Answer: both(b)&(c)
Correct Answer: remain unchanged.
Correct Answer: heat of mixing.
Correct Answer: formation
Correct Answer: 1 torr
Correct Answer: accumulation
Correct Answer: none of these.
Correct Answer: 1 BTU/lb = 2.3 kcal/kg.
Correct Answer: Parsec
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