Stoichiometry problems
- 1. 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
Correct Answer: 1 torr
- 2. The rate of material __________ is zero in case of a steady state system.
Options- A. accumulation
- B. production
- C. input
- D. generation Discuss
Correct Answer: accumulation
- 3. 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
Correct Answer: none of these.
- 4. 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
Correct Answer: 1 BTU/lb = 2.3 kcal/kg.
- 5. Which of the following is not a unit of pressure?
Options- A. Torr
- B. Newton/m2
- C. Parsec
- D. Ata, bar or pascal Discuss
Correct Answer: Parsec
- 6. One Newton is equal to __________ dynes.
Options- A. 102
- B. 103
- C. 104
- D. 105 Discuss
Correct Answer: 105
- 7. 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
Correct Answer: 1 atm. absolute pressure & 15.5°C.
- 8. 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
Correct Answer: 4
- 9. 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
Correct Answer: equivalent weight of the metal is 4.
- 10. Which of the following expressions defines the Baume gravity scale for liquids heavier than water?
Options- A. (141.5/G) - 131.5
- B. 145 - (145/G)
- C. 200(G-1)
- D. (400/G) - 400 Discuss
Correct Answer: 145 - (145/G)
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