10. Which of the following is not used to reduce the particle size of solids ?
(A) Crushing
(B) Grinding
(C) Pelletising
(D) None of these
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LET
C
Answers
I think (D) none of this
Answer:
Right choice is option (C)
Explanation:
Option (C) is the right choice because Pellets are made by coagulating smaller particles to form a particular shaped larger pre-formed object. These pellets usually have similar size and shape.
Option (A) is incorrect because in Crushing the particles size of solids gets reduced on account of the crusher that applies force of the given brittle object to crush it into smaller sized particles.
Option (B) is incorrect because in Grinding the particles size of solids gets reduced on account of the grinder that applies grinding force on a metallic object (usually) to chisel out / chip off / grind off edges or surface metals thus reducing the parent material into smaller sized particles.