Discussion
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- Question
Pick out the wrong statement.
Options- A. Cummulative analysis for determining surface area is preferred over differential analysis, because of the assumption that "all particles in a simple fraction equal in size" is not needed for cummulative anslysis unlike differential anlaysis.
- B. A gate diagram is a plot of cummulative percent by weight undersize vs. the reciprocal of diameter, in which the area beneath the curve represents the surface.
- C. Capacity of crusher in choke feeding is increased.
- D. Rolling of pebbles/balls from top to bottom of the heap in tumbling mills is called 'cascading and throwing of the balls through the air to the toe of the heap is called 'cataracting'.
- Correct Answer
- Capacity of crusher in choke feeding is increased.
- 1. Poly tetra flouro ethylene (PTFE) is known as
Options- A. dacron
- B. teflon
- C. bakelite
- D. celluloid Discuss
- 2. German silver used for decorative purposes contains maximum percentage of
Options- A. silver
- B. copper
- C. zinc
- D. nickel Discuss
- 3. Ammonium phosphate is a __________ fertiliser.
Options- A. nitrogenous
- B. phosphatic
- C. complex
- D. mixed Discuss
- 4. Radioactivity of an isotope is expressed in
Options- A. barn
- B. MeV
- C. Curie
- D. Ergs Discuss
- 5. Corrosion of metals can not be prevented by its
Options- A. tempering
- B. chromising
- C. aluminising
- D. alloying Discuss
- 6. The value of 'angle of nip' is generally about
Options- A. 16°
- B. 32°
- C. 52°
- D. 64° Discuss
- 7. Which is a neutral refractory?
Options- A. Graphite
- B. Magnesite chrome
- C. Silica
- D. Magnesia Discuss
- 8. Buna-S is also known as
Options- A. teflon
- B. PTFE
- C. SBR
- D. polycrylates Discuss
- 9. Viscosity of atmospheric air may be about __________ centipoise.
Options- A. 0.015
- B. 1.5
- C. 15
- D. 150 Discuss
- 10. Refined acetic acid storage vessel are made of
Options- A. copper
- B. aluminium
- C. high carbon steel
- D. nickel Discuss
More questions
Correct Answer: teflon
Correct Answer: copper
Correct Answer: mixed
Correct Answer: Curie
Correct Answer: tempering
Correct Answer: 32°
Correct Answer: Graphite
Correct Answer: SBR
Correct Answer: 0.015
Correct Answer: aluminium
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