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- Question
Molten sodium (as a coolant in fast breeder reactor)
Options- A. can't attain high temperature at normal pressure.
- B. is not at all corrosive, even at a higher temperature.
- C. is highly radioactive at elevated temperatures and can cause explosion, when it comes in contact with air or water.
- D. none of these
- Correct Answer
- is highly radioactive at elevated temperatures and can cause explosion, when it comes in contact with air or water.
- 1. The time taken for a radioactive element to reduce to 50% of its original weight is __________ years, if its half life period is 12 years.
Options- A. 24
- B. 18
- C. 6
- D. 36 Discuss
- 2. With increase in the pressure drop across the cake, the specific cake resistance for the compressible sludge
Options- A. increases
- B. decreases
- C. remains constant
- D. increases linearly Discuss
- 3. Alkyd resin is a/an
Options- A. polyamide
- B. polyester
- C. polyolefin
- D. addition polymer Discuss
- 4. Complete removal of __________ from gasoline is done by Unisol process using caustic soda and methyl alcohol.
Options- A. waxes
- B. mercaptans
- C. asphalt
- D. diolefins Discuss
- 5. Continuous measurement of moisture content of paper in paper industry is done by measuring the
Options- A. thermal conductivity through the paper
- B. electrical resistance through the paper
- C. magnetic susceptibility
- D. none of these Discuss
- 6. Thermal well made of __________ gives the fastest speed of response, while measuring temperature by thermocouples.
Options- A. steel
- B. vycor (a glass)
- C. nichrome
- D. inconel Discuss
- 7. Working principle of mercury in glass thermometer is
Options- A. volumetric expansion.
- B. pressure rise with temperature.
- C. linear expansion.
- D. none of these. Discuss
- 8. Composition of natural gas is determined by the
Options- A. Haldane apparatus
- B. mass spectrometer
- C. chromatograph
- D. both (b) and (c) Discuss
- 9. Power required to drive a ball mill with a particular ball load is proportional to (where, D = diameter of ball mill )
Options- A. D
- B. 1/D
- C. D2.5
- D. 1/D2.5 Discuss
- 10. Maximum allowable concentration of CO2 in air for safe working is __________ ppm (parts per million).
Options- A. 50
- B. 1000
- C. 2000
- D. 5000 Discuss
More questions
Correct Answer: 18
Correct Answer: increases
Correct Answer: polyester
Correct Answer: mercaptans
Correct Answer: electrical resistance through the paper
Correct Answer: vycor (a glass)
Correct Answer: volumetric expansion.
Correct Answer: both (b) and (c)
Correct Answer: D2.5
Correct Answer: 5000
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