Discussion
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- Question
The total number of atoms in 8.5 gm of NH3 is __________ x 1023.
Options- A. 9.03
- B. 3.01
- C. 1.204
- D. 6.02
- Correct Answer
- 9.03
- 1. Which of the following is not an explosive?
Options- A. TNT
- B. CMC
- C. RDX
- D. Lead azide Discuss
- 2. Which one of the following is incombustible?
Options- A. H2
- B. CCl4
- C. C2H2
- D. S Discuss
- 3. In extrusion of metals, which of the following statement is true?
Options- A. speed of the extruded material is same as that of ram speed.
- B. Redundant work is a function of the die angle.
- C. Relative motion between the billet surface and the container wall is always present.
- D. Hollow ram is used for indirect extrusion. Discuss
- 4. Which of the following fastening devices has a head at one end and a nut fitted to the other?
Options- A. Bolt
- B. Stud
- C. Top bolt
- D. None of these Discuss
- 5. Which of the following parameters is not responsible for the heat loss from a hot steam carrying bare pipe surface located in a room without fans?
Options- A. Emissivity of pipe surface.
- B. Diameter & length of the pipe.
- C. Temperature of hot pipe surface & that of air in the room.
- D. none of these. Discuss
- 6. Which of the following is concerned with both heat and mass transfer?
Options- A. Lewis relationship
- B. Nusselt number
- C. Kutateladze number
- D. Froude number Discuss
- 7. Which of the following unit operations makes use of Thiele-Geddes equation?
Options- A. Liquid-liquid extraction
- B. Solid-liquid extraction
- C. Multicomponent absorption with chemical reaction
- D. Multicomponent distillation. Discuss
- 8. Which of the following remains constant during sensible cooling process?
Options- A. Specific humidity
- B. Partial pressure of vapour
- C. Both (a) and (b)
- D. Neither (a) nor (b) Discuss
- 9. Which of the following is the most suitable for extraction in a system having very low density difference?
Options- A. Mixer-settler extractor
- B. Centrifugal extractor
- C. Pulsed extractor
- D. Packed extraction tower Discuss
- 10. Which of the following liquid-vapor contacting devices provides maximum contact surface area for a particular duty?
Options- A. Sieve plate column
- B. Bubble cap column
- C. Randomly packed column
- D. Wetted wall column Discuss
More questions
Correct Answer: CMC
Correct Answer: CCl4
Correct Answer: Hollow ram is used for indirect extrusion.
Correct Answer: Stud
Correct Answer: none of these.
Correct Answer: Lewis relationship
Correct Answer: Multicomponent distillation.
Correct Answer: Both (a) and (b)
Correct Answer: Centrifugal extractor
Correct Answer: Wetted wall column
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