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- Question
Which of the following ratios defines the recycle ratio in a chemical process?
Options- A. Gross feed stream/recycle feed stream
- B. Recycle stream/fresh feed stream
- C. Recycle stream/gross feed stream
- D. None of these
- Correct Answer
- Recycle stream/fresh feed stream
- 1. For estimation of heat capacity of a solid compound, one can use
Options- A. Clayperon's equation
- B. Gibb's equation
- C. Kopp's rule
- D. Trouton's rule Discuss
- 2. At 100°C, water and methylcyclohexane both have vapour pressures of 1 atm. Also at 100°C, the latent heats of vaporisation of these compounds are 40.63 kJ/mole for water and 31.55 kJ/mole for methylcyclohexane. The vapour pressure of water at 150°C is 4.69 atm. At 150°C, the vapour pressure of methylcyclohexane would be expected to be
Options- A. significantly less than 4.69 atm.
- B. nearly equal to 4.69 atm.
- C. significantly more than 4.69 atm.
- D. indeterminate due to lack of data Discuss
- 3. A chemical process is said to occur under unsteady state, if the
Options- A. inventory changes do not take place.
- B. ratio of streams entering/leaving are independent of time.
- C. flow rates & composition both are time dependent.
- D. none of these. Discuss
- 4. Hess's law of constant heat summation is based on conservation of mass. It deals with
Options- A. equilibrium constant.
- B. reaction rate.
- C. changes in heat of reaction.
- D. none of these. Discuss
- 5. Pick out the wrong statement:
Options- A. A vapor is termed as a saturated vapor, if its partial pressure equals its equilibrium vapor pressure.
- B. A vapor whose partial pressure is less than its equilibrium vapor pressure, is termed as a 'superheated vapor'.
- C. The temperature at which a vapor is saturated is termed as the boiling point.
- D. The difference between the existing temperature of a vapor and its saturation temperature (i.e. dew point) is called its 'degree of superheat'. Discuss
- 6. With increase in the temperature of pure (distilled) water, its
Options- A. pOH decreases and pH increases.
- B. pOH and pH both 4ecreases.
- C. pH and pOH both increases.
- D. pH decreases and pOH increases. Discuss
- 7. Size range of the colloidals particles is
Options- A. 5 - 200 milli-microns
- B. 50 - 200 microns
- C. 500 - 1000 microns
- D. 10 - 50 Angstrom Discuss
- 8. An azeotropic solution of two liquids has boiling point lower than either of them, when it
Options- A. is saturated.
- B. is unsaturated.
- C. shows negative deviation from Raoult's law.
- D. shows positive deviation from Raoult's law. Discuss
- 9. "The heat capacity of a solid compound is approximately equal to the sum of the heat capacities of the constituent elements." This is the statement of
Options- A. Law of Petit and Dulong
- B. Kopp's rule
- C. Nearnst heat theorem
- D. Trouton's rule Discuss
- 10. 1 kg/cm2 is equal to
Options- A. 760 torr
- B. 1KPa
- C. 10 metres of water column
- D. 1 metre of water column Discuss
Stoichiometry problems
Search Results
Correct Answer: Kopp's rule
Correct Answer: significantly more than 4.69 atm.
Correct Answer: flow rates & composition both are time dependent.
Correct Answer: changes in heat of reaction.
Correct Answer: The temperature at which a vapor is saturated is termed as the boiling point.
Correct Answer: pOH and pH both 4ecreases.
Correct Answer: 5 - 200 milli-microns
Correct Answer: shows positive deviation from Raoult's law.
Correct Answer: Kopp's rule
Correct Answer: 10 metres of water column
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