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- Question
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.
- Correct Answer
- 1 BTU/lb = 2.3 kcal/kg.
- 1. 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
- 2. The rate of material __________ is zero in case of a steady state system.
Options- A. accumulation
- B. production
- C. input
- D. generation Discuss
- 3. 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
- 4. CaCO3 contains __________ percent of Ca by weight.
Options- A. 40
- B. 48
- C. 96
- D. 12 Discuss
- 5. 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
- 6. Which of the following is not a unit of pressure?
Options- A. Torr
- B. Newton/m2
- C. Parsec
- D. Ata, bar or pascal Discuss
- 7. One Newton is equal to __________ dynes.
Options- A. 102
- B. 103
- C. 104
- D. 105 Discuss
- 8. S.T.P. corresponds to
Options- A. 1 atm. absolute pressure & 15.5°C.
- B. 760 mm Hg gauge pressure & 15.5°C.
- C. 760 torr & 0°C.
- D. 101.325 kPa gauge pressure & 15.5°C. Discuss
- 9. On addition of 1 c.c. of dilute hydrochloric acid (1% concentration) to 80 c.c. of a buffer solution of pH = 4, the pH of the solution becomes
Options- A. 1
- B. 8
- C. 4
- D. 2 Discuss
- 10. A metal oxide is reduced by heating it in a stream of hydrogen. After complete reduction, it is found that 3.15 gm of the oxide has yielded 1.05 gm of the metal. It may be inferred that the
Options- A. atomic weight of the metal is 4.
- B. equivalent weight of the metal is 4.
- C. atomic weight of the metal is 2.
- D. equivalent weight of the metal is 8. Discuss
Stoichiometry problems
Search Results
Correct Answer: none of these.
Correct Answer: accumulation
Correct Answer: 1 torr
Correct Answer: 40
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: Parsec
Correct Answer: 105
Correct Answer: 1 atm. absolute pressure & 15.5°C.
Correct Answer: 4
Correct Answer: equivalent weight of the metal is 4.
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