Discussion
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- Question
The quantity of heat required to evaporate 1 kg of a saturated liquid is called
Options- A. specific heat
- B. 1 Kcal
- C. sensible heat
- D. latent heat
- Correct Answer
- latent heat
- 1. How much O2 can be obtained from 90 kg of water?
Options- A. 32 kg
- B. 80 kg
- C. 64 kg
- D. 90 kg Discuss
- 2. In a mixture of benzene vapor and nitrogen gas at a total pressure of 900 mm Hg, if the absolute humidity of benzene is 0.2 kg benzene/kg nitrogen, the partial pressure of benzene in mm Hg is
Options- A. 180
- B. 60.3
- C. 720
- D. 200 Discuss
- 3. Pure oxygen is mixed with air to produce an enriched air containing 50 volume % of oxygen. The ratio of moles of air to oxygen used is
Options- A. 1.72
- B. 0.58
- C. 0.5
- D. 0.2 Discuss
- 4. 1 Kcal/kg. °C is equivalent to __________ BTU/lb. °F.
Options- A. 1
- B. 2.42
- C. 4.97
- D. none of these Discuss
- 5. In __________ process, ions of salts react with water to produce acidity or alkalinity.
Options- A. hydration
- B. hydrolysis
- C. electrolysis
- D. dialysis Discuss
- 6. For the gaseous phase reaction, N2 + O2⇌2NO, ?H = + 80 kJ/kg. mole; the decomposition of NO is favoured by
Options- A. increasing the concentration of N2.
- B. decrease in temperature.
- C. increase in pressure.
- D. decrease in pressure. Discuss
- 7. The vapour pressure of water is given by, in Psat = A - (5000/T), where A is a constant, Psat is the vapour pressure in atm. and T is the temperature in K.The vapor pressure of water in atm. at 50°C is approximately
Options- A. 0.07
- B. 0.09
- C. 0.11
- D. 0.13 Discuss
- 8. Addition of a non-volatile solute to a pure solvent
Options- A. increases its freezing point.
- B. increases its boiling point.
- C. decreases its freezing point.
- D. both (b) and (c) Discuss
- 9. What is the simplest formula of a compound containing 50% of element A (atomic weight = 10) and 50% of element B (atomic weight = 20)?
Options- A. AB3
- B. A2B3
- C. A2B
- D. AB2 Discuss
- 10. Vapor pressure of a solution is proportional to(where, Sv and St are mole fraction of solvent and solute respectively).
Options- A. Sv
- B. 1/St
- C. St
- D. 1/Sv Discuss
Stoichiometry problems
Search Results
Correct Answer: 80 kg
Correct Answer: 60.3
Correct Answer: 0.58
Correct Answer: 1
Correct Answer: hydrolysis
Correct Answer: decrease in temperature.
Correct Answer: 0.13
Correct Answer: both (b) and (c)
Correct Answer: AB3
Correct Answer: Sv
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