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- Question
For spheres, volume shape factor is given by
Options- A. ?(=A/D2)
- B. 2?(=2A/D2)
- C. ?/6(=V/D3)
- D. AD/V
- Correct Answer
- ?/6(=V/D3)
- 1. Liquefied petroleum Gas (LPG) used for the household cooking comprises mainly of
Options- A. propane & butane
- B. butane & ethane
- C. methane & ethane
- D. methane & carbon monoxide Discuss
- 2. Chromite refractories
Options- A. are bonded with lime and clay.
- B. (free from silica) have better thermal fatigue resistance than silica and magnesite refractories.
- C. are resistant to basic slag.
- D. all (a), (b) and (c). Discuss
- 3. Pressure maintained in the high pressure primary tower of a three stage crude oil distillation system is about __________ kg/cm2 .
Options- A. 1.5
- B. 3
- C. 6
- D. 12 Discuss
- 4. The response of two tanks of same size and resistance in series is
Options- A. under damped
- B. critically damped
- C. over damped
- D. none of the above Discuss
- 5. Pick out the wrong statement.
Options- A. The concentric layer in atmosphere which contains about 70% of the total mass of atmosphere and characterised by a steady decrease in temperature is called stratosphere.
- B. Stratosphere is rich in ozone and is located just above the troposphere.
- C. Troposphere is a turbulent dusty zone containing much of water vapor and clouds.
- D. The earth's atmosphere is an envelope of gases extending upto a height of about 200 kms. Discuss
- 6. The doctor's solution comprises of sodium plumbite in
Options- A. alcohal
- B. water
- C. aqueous caustic soda
- D. soda ash Discuss
- 7. Which of the following is the costliest source of hydrogen needed for ammonia manufacture under Indian condition?
Options- A. Electrolysis of water.
- B. Cryogenic removal of H2 from coke oven gas.
- C. Steam reforming of naphtha.
- D. Natural gas cracking. Discuss
- 8. Choose the correct statement.
Options- A. Octane number of i-octane is zero.
- B. Octane number of paraffins increases with increasing number of carbon atoms.
- C. Branched chain paraffins have higher octane number than straight chain paraffins with same number of carbon atoms.
- D. The aromatics have lower octane number than naphthenes with same number of carbon atoms. Discuss
- 9. Fuel oil is subjected to visbreaking to reduce its
Options- A. pour point
- B. viscosity
- C. pressure drop on pumping
- D. all (a), (b) and (c) Discuss
- 10. Pour point of a petrofuel is
Options- A. multiple of 3°F.
- B. multiple of 5°F.
- C. 5°C below the temperature at which oil ceases to flow.
- D. none of these. Discuss
More questions
Correct Answer: propane & butane
Correct Answer: all (a), (b) and (c).
Correct Answer: 3
Correct Answer: critically damped
Correct Answer: The concentric layer in atmosphere which contains about 70% of the total mass of atmosphere and characterised by a steady decrease in temperature is called stratosphere.
Correct Answer: aqueous caustic soda
Correct Answer: Electrolysis of water.
Correct Answer: Branched chain paraffins have higher octane number than straight chain paraffins with same number of carbon atoms.
Correct Answer: all (a), (b) and (c)
Correct Answer: 5°C below the temperature at which oil ceases to flow.
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