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- Question
Both tritium and deuterium have the same number of
Options- A. neutrons
- B. electrons
- C. protons
- D. nucleons
- Correct Answer
- neutrons
- 1. What is the simplest formula of a compound containing 50% of element A (atomic weight = 10) and 50% of element B (atomic weight = 20)?
Options- A. AB3
- B. A2B3
- C. A2B
- D. AB2 Discuss
- 2. Vulcanisation of raw rubber makes it
Options- A. soft
- B. less elastic
- C. plastic
- D. tacky Discuss
- 3. The first crude oil refinery of India is located at
Options- A. Naharkatiya
- B. Digboi
- C. Kochin
- D. Madras Discuss
- 4. Refractoriness under load (RUL) of fireclay bricks (under a load of 2 kg/cm2 ) is __________ °C.
Options- A. 500
- B. 1000
- C. >1350
- D. >2000 Discuss
- 5. Metallic wire mesh is used as a filtering medium for the separation of dust from dust laden gas in case of a/an
Options- A. air filter
- B. bag filter
- C. venturi scrubber
- D. hydrocyclones Discuss
- 6. During combustion of gaseous fuels, deficiency of air
Options- A. lengthens the flame.
- B. tends to shorten the flame.
- C. does not affect the flame length.
- D. increases the flame temperature. Discuss
- 7. Zirconia refractories are not used in
Options- A. making sheaths for thermocouple.
- B. lining high temperature ceramic kilns.
- C. furnaces subjected to fluctuating temperature.
- D. high frequency induction furnaces in the form of inductors. Discuss
- 8. Lug support is
Options- A. the most suitable for thick vertical vessel.
- B. same as bracket support.
- C. provided usually for vessels of much smaller height than skirt supported vessels.
- D. all (a), (b) and (c). Discuss
- 9. A 30% (by volume) suspension of spherical sand particles in a viscous oil has a hindered settling velocity of 4.44 ?m/s. If the Richardson Zaki hindered settling index is 4.5, then the terminal velocity of a sand grain is
Options- A. 0.90 ?m/s
- B. 1 ?m/s
- C. 22.1 ?m/s
- D. 0.02 ?m/s Discuss
- 10. A very dilute solution is prepared by dissolving 'x1' mole of solute in 'x2' mole of a solvent. The mole fraction of solute is approximately equal to
Options- A. x1/x2
- B. x2/x1
- C. 1 - (x1/x2)
- D. 1/x2 Discuss
More questions
Correct Answer: AB3
Correct Answer: less elastic
Correct Answer: Digboi
Correct Answer: >1350
Correct Answer: air filter
Correct Answer: lengthens the flame.
Correct Answer: furnaces subjected to fluctuating temperature.
Correct Answer: all (a), (b) and (c).
Correct Answer: 1 ?m/s
Correct Answer: x1/x2
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