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MCQs

Total Questions : 2215 | Page 2 of 222 pages
Question 11. Mixing of plastic solids is generally facilitated by
  1.    Dispersion
  2.    Mastication
  3.    Kneading
  4.    None of these
 Discuss Question
Answer: Option C. -> Kneading
Question 12. During the washing of cake
  1.    All the resistances are constant
  2.    Filter medium resistance increases
  3.    Filter medium resistance decreases
  4.    Cake resistance decreases
 Discuss Question
Answer: Option A. -> All the resistances are constant
Question 13. Temperature of the product during ultrafine grinding
  1.    Increases
  2.    Decreases
  3.    Remains constant
  4.    May increase or decrease ; depends on the material being ground
 Discuss Question
Answer: Option A. -> Increases
Question 14. Metallic wire mesh is used as a filtering medium for the separation of dust from dust laden gas in case of a/an
  1.    Air filter
  2.    Bag filter
  3.    Venturi scrubber
  4.    Hydrocyclones
 Discuss Question
Answer: Option A. -> Air filter
Question 15. Which of the following is not an industrial screening equipment?
  1.    Sharpies centrifuge
  2.    Vibrating screen
  3.    Grizzly
  4.    Trommel
 Discuss Question
Answer: Option A. -> Sharpies centrifuge
Question 16. Ore concentration by jigging is based on the difference in the __________ of the particles.
  1.    Specific gravities
  2.    Wettability
  3.    Shape
  4.    None of these
 Discuss Question
Answer: Option A. -> Specific gravities
Question 17. According to Taggart's rule for selecting between a gyratory crusher and a jaw crusher; the later should be used, if the hourly tonnage to be crushed divided by the square of the gape expressed in cm is less than
  1.    0.00184
  2.    0.0184
  3.    0.184
  4.    1.84
 Discuss Question
Answer: Option B. -> 0.0184
Question 18. Which of the following is a fine crusher?
  1.    Blake jaw crusher
  2.    Gyratory crusher
  3.    Toothed roll crusher
  4.    Dodge jaw crusher
 Discuss Question
Answer: Option C. -> Toothed roll crusher
Question 19. Pick out the correct statement.
  1.    The capacity and the effectiveness of a screen are the same
  2.    The capacity and the effectiveness of screen are opposing factors
  3.    The screening surface of a
  4.    Both B and C
 Discuss Question
Answer: Option D. -> Both B and C
Question 20. Which of the following crushing laws is most accurately applicable to the fine grinding of materials ?
  1.    Bond's crushing law
  2.    Kick's law
  3.    Rittinger's law
  4.    None of these
 Discuss Question
Answer: Option C. -> Rittinger's law

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