Discussion
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- Question
Hydraulic mean depth (Dm) for a circular pipe of diameter 'D' flowing full is 0.25 D. For a circular channel, at Dm = 0.3 D, gives the condition for the maximum
Options- A. flow rate
- B. mean velocity
- C. both 'a' & 'b'
- D. neither 'a' nor 'b'
- Correct Answer
- mean velocity
- 1. Noise level heard inside a bus in busy city traffic or inside a sub-way train corresponds to about __________ decibels.
Options- A. 75
- B. 95
- C. 120
- D. 140 Discuss
- 2. If the pH value of a solution changes by one unit, it implies that hydrogen ion concentration in the solution will change __________ times.
Options- A. 10
- B. 20
- C. 70
- D. 100 Discuss
- 3. Solvent used in the deasphalting process is
Options- A. furfurol
- B. phenol
- C. propane
- D. hexane Discuss
- 4. Gases diffuse faster compared to liquids because of the reason that the liquid molecules
Options- A. are held together by stronger inter-molecular forces.
- B. move faster.
- C. have no definite shape.
- D. are heavier Discuss
- 5. Equilibrium constant decreases as the temperature
Options- A. increases, for an exothermic reaction.
- B. decreases, for an exothermic reaction.
- C. increases, for an endothermic reaction.
- D. none of these. Discuss
- 6. Molecular weight of petrol may be about
Options- A. 40-60
- B. 100-130
- C. 250-300
- D. 350-400 Discuss
- 7. Colligative properties of a dilute solution are those, which depend entirely upon the
Options- A. chemical composition of the solute.
- B. constitution of the solute.
- C. number of solute molecules contained in a given volume of the solvent.
- D. none of these. Discuss
- 8. __________ stability method uses open loop transfer function.
Options- A. Nyquist
- B. Mikhalov
- C. Ruth
- D. none of these Discuss
- 9. Smoke density of the flue gas going out of the chimney is measured by a
Options- A. polarograph
- B. thermal conductivity meter
- C. photo electric cell
- D. chromatograph Discuss
- 10. Nylon 6 as compared to nylon 6, 6 has lower
Options- A. abrasion resistance.
- B. thermal stability.
- C. adhesion to rubber.
- D. hardness. Discuss
More questions
Correct Answer: 95
Correct Answer: 10
Correct Answer: propane
Correct Answer: are held together by stronger inter-molecular forces.
Correct Answer: increases, for an exothermic reaction.
Correct Answer: 100-130
Correct Answer: constitution of the solute.
Correct Answer: Nyquist
Correct Answer: photo electric cell
Correct Answer: abrasion resistance.
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