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- Question
Zeolite removes both temporary as well as permanent hardness of water by precipitating calcium and magnesium present in water as insoluble zeolites. Used zeolite is regenerated by flushing with the solution of
Options- A. calcium sulphate
- B. sodium chloride
- C. sodium sulphate
- D. magnesium chloride.
- Correct Answer
- sodium chloride
- 1. Wall thickness of schedule 40 pipe as compared to that of schedule 80 pipe is
Options- A. more
- B. less
- C. same
- D. cither (a) or (b); depends upon the I.D. of the pipe Discuss
- 2. Aniline point of the diesel is a measure of its __________ content.
Options- A. aromatic
- B. paraffin
- C. olefin
- D. naphthene Discuss
- 3. Dry powdery solid materials are transported by a __________ conveyor.
Options- A. belt
- B. bucket
- C. screw
- D. none of these Discuss
- 4. Size reduction does not occur due to compression in case of
Options- A. rod mills
- B. gyratory crushers
- C. jaw crushers
- D. smooth roll crushers Discuss
- 5. Thorium can be converted into U-233 in a __________ reactor.
Options- A. liquid metal cooled
- B. fast breeder
- C. thermal
- D. swimming pool Discuss
- 6. A rivetted joint does not fail by __________ of rivets.
Options- A. tearing
- B. shearing
- C. tearing of the plate across a row
- D. none of these Discuss
- 7. The synthetic fibres produced from __________ are known as rayon.
Options- A. lignin
- B. cellulose
- C. polyamides
- D. ethylene glycol Discuss
- 8. A/an __________ is used for changing the direction of a pipeline.
Options- A. elbow
- B. union
- C. flange
- D. disc compensator Discuss
- 9. Sucrose content in the raw juice extracted from sugar cane is about __________ percent.
Options- A. 1 - 2
- B. 15 - 20
- C. 50 - 60
- D. 80 - 85 Discuss
- 10. The ratio of volume of an atom to that of its nucleus is
Options- A. 1012
- B. 10-12
- C. 10-8
- D. 108 Discuss
More questions
Correct Answer: less
Correct Answer: aromatic
Correct Answer: screw
Correct Answer: rod mills
Correct Answer: fast breeder
Correct Answer: none of these
Correct Answer: cellulose
Correct Answer: elbow
Correct Answer: 15 - 20
Correct Answer: 1012
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