7000+ Metallurgy Mineral Dressing MCQ Questions and Answers - 1

Question: 1

Trommels separate a mixture of particles depending on their

(A) Electrical and magnetic properties

(B) Wettability

(C) Density

(D) Size

Ans: D


Question: 2

Which of the following crusher can be considered as a combination of a jaw crusher and a roller crusher?

(A) Ball mill

(B) Gyratory crusher

(C) Fluid energy mill

(D) Rod mill

Ans: B

Gyratory crusher

Question: 3

In a constant pressure filtration,

(A) Rate of filtration decreases with time

(B) Rate of filtration increases with time

(C) Rate of filtration is constant

(D) Resistance decreases with same

Ans: A

Rate of filtration decreases with time

Question: 4

Which is the most suitable for transportation of sticky material?

(A) Pneumatic conveyor

(B) Screw conveyor

(C) Belt conveyor

(D) Apron conveyor

Ans: B

Screw conveyor

Question: 5

In a closed circuit grinding as compared to open circuit grinding, the

(A) Operation is economical

(B) Specific surface of product is more

(C) Product has lesser size uniformity

(D) Production rate at a given limiting size is lower

Ans: A

Operation is economical

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