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- Question
Dry air is a mixture of
Options- A. vapors
- B. gases
- C. both (a) & (b)
- D. neither (a) nor (b)
- Correct Answer
- gases
- 1. A saturated vapor on being compressed would
Options- A. condense
- B. form wet steam
- C. both (a) & (b)
- D. neither (a) nor (b) Discuss
- 2. The gravimetric (i.e., by weight) composition of a vapor saturated gas is independent of the
Options- A. nature of both the gas & the liquid.
- B. temperature.
- C. total pressure.
- D. none of these. Discuss
- 3. Pick out the wrong statement about the recycle stream in a process.
Options- A. Recycling in a process stream helps in utilising the valuable reactants to the maximum with minimum loss of reactants.
- B. The ratio of the quantity of a reactant present in the reactor feed of a recycling operation to the quantity of the same reactant entering the process as fresh feed is called combined feed ratio.
- C. Recycling in a process does not help in getting higher extent of reaction.
- D. Recycling is exemplified by refluxing back a part of the distillate to the distillation column to maintain the quantity of liquid within the column. Discuss
- 4. At higher temperature, molal heat capacities of most of the gases (at constant pressure) __________ with increase in temperature.
Options- A. increases
- B. decreases
- C. remains unchanged
- D. increases linearly Discuss
- 5. The amount of Zn (atomic weight = 65) required to form 224 c.c. of H2 at N.T.P. on treatment with dilute H2SO4 will be __________ gm.
Options- A. 0.065
- B. 0.65
- C. 6.5
- D. 65 Discuss
- 6. Variation of vapor pressure with temperature can be calculated using Clausius-Clapeyron equation, which assumes that the
Options- A. vapor follows the ideal gas law.
- B. molal latent heat of vaporisation is constant within the limited temperature range.
- C. volume in the liquid state is negligible compared with that in the vapor state.
- D. all (a), (b) & (c). Discuss
- 7. Methane is mixed with stoichiometric proportion of oxygen and completely combusted. The number of additional specifications required to determine the product flow rate and composition is
Options- A. 0
- B. 1
- C. 2
- D. 3 Discuss
- 8. If the pH value of a solution changes by one unit, it implies that hydrogen ion concentration in the solution will change __________ times.
Options- A. 10
- B. 20
- C. 70
- D. 100 Discuss
- 9. With rise in temperature, the solubility of ammonia in water at a fixed pressure
Options- A. increases
- B. decreases
- C. remains unchanged
- D. increases exponentially Discuss
- 10. Avogadro's number is equal to
Options- A. 6.023 x 1023 molecules/kg.mole.
- B. 6.023 x 1023 molecules/gm.mole.
- C. 6.023 x 1016 molecules/kg.mole.
- D. 6.023 x 1026 molecules/gm.mole. Discuss
Stoichiometry problems
Search Results
Correct Answer: both (a) & (b)
Correct Answer: none of these.
Correct Answer: Recycling in a process does not help in getting higher extent of reaction.
Correct Answer: increases
Correct Answer: 0.65
Correct Answer: all (a), (b) & (c).
Correct Answer: 0
Correct Answer: 10
Correct Answer: decreases
Correct Answer: 6.023 x 1023 molecules/gm.mole.
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