Discussion
Home ‣ Chemical Engineering ‣ Polymer Technology See What Others Are Saying!
- Question
Pick out the wrong statement.
Options- A. Cold SBR is superior as compared to hot SBR.
- B. Polymerisation temperature can modify the properties of SBR.
- C. Production of cold SBR employs lower pressure as compared to that of hot SBR.
- D. None of these.
- Correct Answer
- None of these.
- 1. Overall tray efficiency of a distillation column is the ratio of the number of
Options- A. overall gas transfer units to the number of ideal trays required.
- B. ideal trays required to the number of real trays required.
- C. real trays required to the number of ideal trays required.
- D. none of these. Discuss
- 2. In physical adsorption, as compared to chemisorption, the
Options- A. quantity adsorbed per unit mass is higher.
- B. rate of adsorption is controlled by the resistance to surface reaction.
- C. activation energy is very high.
- D. heat of adsorption is very large. Discuss
- 3. Pick out the wrong statement.
Options- A. Refractories used in muffle furnace should have low thermal conductivity.
- B. The electrical resistivity of refractories drops rapidly with rise in temperature.
- C. For reducing spalling tendency, the refractory should be well fired and its porosity should be more.
- D. Refractoriness under load (RUL) of a refractory is always less than its refractoriness. Discuss
- 4. Heat of neutralisation of a strong acid and strong base is always a constant value, i.e., 57 KJ/Kg mole. This is because
Options- A. the strong base and strong acid reacts completely.
- B. the salt formed does not hydrolyse.
- C. only OH- and H+ ions react in every case.
- D. the strong base and strong acid reacts in aqueous solution. Discuss
- 5. Close circuit grinding by a ball mill with air sweeping employs a
Options- A. classifier.
- B. cyclone separator between mill & classifier.
- C. both (a) & (b).
- D. neither (a) nor (b). Discuss
- 6. Pick out the wrong statement.
Options- A. Momentum transfer in laminar flow results from veclocity gradient.
- B. A fluid in equilibrium is not free from shear stress.
- C. The viscosity of a non-Newtonion fluid is a function of temperature only.
- D. both (b) and (c) Discuss
- 7. With increase in gas flow rate to fabric surface area ratio (Nm3/hr/m2 fabric surface area), the size & the cost of a bag filter
Options- A. increases
- B. decreases
- C. remain unaffected
- D. none of these Discuss
- 8. Thermal nuclear reactors using enriched uranium as fuel contains a maximum of __________ percent fissile material i.e. U-235.
Options- A. 1
- B. 2
- C. 3
- D. 7 Discuss
- 9. Ordinary mercury in glass thermometer is used for measuring temperature upto 120°C. However, for measuring higher temperature upto __________ °C, thermometer is made by filling nitrogen under pressure above the mercury, which stops the evaporation of mercury and reduces the chance of broken thread of mercury.
Options- A. 250
- B. 350
- C. 550
- D. 700 Discuss
- 10. Low grade coal is __________ to produce ammonia synthesis gas.
Options- A. hydrogenated
- B. liquefied
- C. gasified
- D. dehydrogenated Discuss
More questions
Correct Answer: ideal trays required to the number of real trays required.
Correct Answer: quantity adsorbed per unit mass is higher.
Correct Answer: Refractories used in muffle furnace should have low thermal conductivity.
Correct Answer: only OH- and H+ ions react in every case.
Correct Answer: both (a) & (b).
Correct Answer: both (b) and (c)
Correct Answer: decreases
Correct Answer: 3
Correct Answer: 550
Correct Answer: gasified
Comments
There are no comments.More in Chemical Engineering:
Programming
Copyright ©CuriousTab. All rights reserved.