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- Question
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.
- Correct Answer
- Recycling in a process does not help in getting higher extent of reaction.
- 1. 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
- 2. 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
- 3. Pick out the wrong unit conversion of thermal conductivity.
Options- A. 1 BTU/ft2.hr.°F/ft = 1.488 kcal/m2. hr.°C/m
- B. 1 BTU/ft2.hr.°F/inch = 1.488 kcal/m2. hr.°C/m
- C. 1 kcal/m.hr.°C = 0.672 BTU/ft.hr.°F = 1.163 W/m. °K
- D. 1 W/cm.°C = 85.985 kcal/m.hr.°C = 57.779 BTU/ft.hr.°F Discuss
- 4. Viscosity of 1 centipoise is equal to 1 centis-toke in case of
Options- A. water
- B. mercury
- C. carbon tetrachloride
- D. none of these Discuss
- 5. pH value of H2SO4 (5% concentration) is
Options- A. 5
- B. 7
- C. > 7
- D. < 7 Discuss
- 6. 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
- 7. A saturated vapor on being compressed would
Options- A. condense
- B. form wet steam
- C. both (a) & (b)
- D. neither (a) nor (b) Discuss
- 8. Dry air is a mixture of
Options- A. vapors
- B. gases
- C. both (a) & (b)
- D. neither (a) nor (b) Discuss
- 9. 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
- 10. 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
Stoichiometry problems
Search Results
Correct Answer: increases
Correct Answer: 0.65
Correct Answer: 1 BTU/ft2.hr.°F/inch = 1.488 kcal/m2. hr.°C/m
Correct Answer: water
Correct Answer: < 7
Correct Answer: none of these.
Correct Answer: both (a) & (b)
Correct Answer: gases
Correct Answer: all (a), (b) & (c).
Correct Answer: 0
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