Discussion
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- Question
Lessing ring is formed by the addition of a partition across the centre of a raschig ring, which results in an area increase of about __________ percent.
Options- A. 5
- B. 20
- C. 35
- D. 55
- Correct Answer
- 20
- 1. With decrease in porosity, the __________ of the refractories decreases.
Options- A. strength
- B. thermal conductivity
- C. spalling resistance
- D. none of these Discuss
- 2. Basic bricks are not made of
Options- A. fireclay
- B. magnesite
- C. foresterite
- D. chromite Discuss
- 3. Fast breeder Test Reactor (FBTR) is located at
Options- A. Kalpakkam (near Madras).
- B. Kota (in Rajasthan).
- C. BARC (Trombay).
- D. Tarapur (in Maharashtra). Discuss
- 4. The principal gas evolved from sludge digestion tank is
Options- A. CO
- B. CO2
- C. CH4
- D. N2 Discuss
- 5. In case of a solution (not of a solid in a liquid), whose total volume is less than the sum of the volumes of its components in their pure states, solubility is
Options- A. independent of temperature.
- B. increases with rise in pressure.
- C. increased with decrease in pressure.
- D. unchanged with pressure changes. Discuss
- 6. Tarapur atomic power station
Options- A. has two boiling water reactors of American design.
- B. has an installed capacity of 400 MW.
- C. is the first power reactor in India, which became critical in 1969.
- D. all (a), (b) and (c). Discuss
- 7. Pick out the wrong statement.
Options- A. Close circuit grinding is more economical than open circuit grinding.
- B. Cod oil, beef tallow or aluminium stearates are used as grinding aids in cement 'industries'.
- C. The equipment used for the removal of traces of solids from a liquid is called a classifier.
- D. Size enlargement is a mechanical operation exemplified by medicinal tablet making. Discuss
- 8. 1m3 is approximately equal to
Options- A. 28 litres
- B. 35 ft3
- C. 4.5 litres
- D. 4.5 ft3 Discuss
- 9. The most commonly used feed stock for the reforming reactor is
Options- A. heavy fuel oil
- B. residuum
- C. straight run gasdine
- D. casing head gasoline Discuss
- 10. Driving force in case of filtration by a centrifuge is the
Options- A. speed of the centrifuge.
- B. centrifugal pressure exerted by the liquid.
- C. narrow diameter of the vessel.
- D. formation of highly porous cake. Discuss
More questions
Correct Answer: spalling resistance
Correct Answer: fireclay
Correct Answer: Kalpakkam (near Madras).
Correct Answer: CH4
Correct Answer: increases with rise in pressure.
Correct Answer: all (a), (b) and (c).
Correct Answer: The equipment used for the removal of traces of solids from a liquid is called a classifier.
Correct Answer: 35 ft3
Correct Answer: straight run gasdine
Correct Answer: centrifugal pressure exerted by the liquid.
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