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- Question
Thermal conductivity based continuous flue gas analyser makes use of varying thermal conductivity of the constituents of flue gases. Which of the following constituents of flue gases has the maximum thermal conductivity?
Options- A. CO2
- B. N2
- C. O2
- D. CO
- Correct Answer
- CO2
- 1. The minimum baffle height should be
Options- A. equal to the impeller diameter.
- B. twice the impeller diameter.
- C. twice the tank diameter.
- D. 3/4 of the tank height. Discuss
- 2. Which of the following sugars is the sweetest?
Options- A. Glucose
- B. Fructose
- C. Sucrose
- D. Lactose Discuss
- 3. Conversion of yellow phosphorous to red phosphorous is done by heating it in covered retorts at __________ °C in absence of air.
Options- A. 50-80
- B. 250-400
- C. 1000-1200
- D. 800-900 Discuss
- 4. Most commonly used joint in the underground pipe lines is the
Options- A. sleevejoint
- B. coupling
- C. flange
- D. expansion joint Discuss
- 5. Which of the following is not a measure component necessarily to be present in fertilisers?
Options- A. Nitrogen
- B. Potassium
- C. Phosphorous
- D. Sulphur Discuss
- 6. Wind load consideration in the design of a support can be neglected, when the vessel is
Options- A. tall (say 30 metres), but is full of liquid.
- B. tall but empty.
- C. short (< 2 m) and housed indoor.
- D. none of these. Discuss
- 7. The heats of vaporisation of CS2, C2H5OH &H2O are 26.8, 38.6 & 40.6 KJ/kg mole respectively. The order of decreasing inter-molecular forces in these liquids is
Options- A. H2O > C2H5OH > CS2
- B. CS2 > C2H5OH > H2O
- C. H2O > CS2 > C2H5OH
- D. CS2 > H2O > C2H5OH Discuss
- 8. In the design of a shell and tube heat exchanger, the corrosion allowance
Options- A. need not be provided for non-pressure parts like tie rods, spacers, baffles, supports etc.
- B. for carbon steel and cast iron pressure parts is 1.5 mm (except for tubes) and for severe conditions it is 3 mm.
- C. for internal cover and tube sheet is provided on both the sides.
- D. all (a), (b) & (c). Discuss
- 9. For an ideal gas, the compressibility factor
Options- A. decreases with pressure rise.
- B. is unity at all temperature.
- C. is unity at Boyle's temperature.
- D. zero. Discuss
- 10. If the discharge of a centrifugal pump is throttled, then its suction lift
Options- A. increases
- B. decreases
- C. remains unchanged
- D. data insufficient to predict Discuss
More questions
Correct Answer: twice the impeller diameter.
Correct Answer: Fructose
Correct Answer: 250-400
Correct Answer: sleevejoint
Correct Answer: Sulphur
Correct Answer: short (< 2 m) and housed indoor.
Correct Answer: H2O > C2H5OH > CS2
Correct Answer: all (a), (b) & (c).
Correct Answer: is unity at all temperature.
Correct Answer: increases
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