Mechanical Operations MCQ Questions & Answers | Chemical Engineering Page-1 section-2

Section 1 Section 2 Section 3 Section 4 Section 5

1.
Length/diameter ratio of a ball mill is

A. 1.5

B. 1

C. < 1

D. > 1

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2.
The optimum moisture content in solids to be crushed/ground ranges from __________ percent.

A. 3 to 4

B. 8 to 10

C. 10 to 15

D. 15 to 20

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3.
Apron conveyors are used for

A. Heavy loads & short runs

B. Small loads & long runs

C. Heavy loads & long runs

D. None of these

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4.
Carbon black is pulverised in a

A. Hammer crusher

B. Ball mill

C. Roll crusher

D. Gyratory crusher

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5.
Size reduction of moulding powders, waxes, resins & gums are done in a __________ mill.

A. Cage

B. Hammer

C. Both A & B

D. Neither A nor B

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6.
Ball mills and tube mills with flint or porcelain balls are used for size reduction of

A. Asbestos

B. Rubber

C. Non-metallic ores

D. Limestone

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7.
Shell and leaf filter as compared to plate and frame filter

A. Entails less labor cost

B. Facilitates filtration under higher pressure

C. Provides more effective washing

D. All of the above

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8.
As particle size is reduced

A. Screening becomes progressively more difficult

B. Screening becomes progressively easier

C. Capacity and effectiveness of the screen is increased

D. None of these

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9.
In case of grinding in a ball mill

A. Wet grinding achieves a finer product size than dry grinding

B. Its capacity decreases with increasing fineness of the products

C. Grinding cost and power requirement increases with increasing fineness of the products

D. All of the above

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10.
Pine oil used in froth floatation technique acts as a/an

A. Collector

B. Modifier

C. Frother

D. Activator

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Mechanical Operations MCQ Questions & Answers | Chemical Engineering

1. Length/diameter ratio of a ball mill is

Answer & Solution

2. The optimum moisture content in solids to be crushed/ground ranges from __________ percent.

Answer & Solution

3. Apron conveyors are used for

Answer & Solution

4. Carbon black is pulverised in a

Answer & Solution

5. Size reduction of moulding powders, waxes, resins & gums are done in a __________ mill.

Answer & Solution

6. Ball mills and tube mills with flint or porcelain balls are used for size reduction of

Answer & Solution

7. Shell and leaf filter as compared to plate and frame filter

Answer & Solution

8. As particle size is reduced

Answer & Solution

9. In case of grinding in a ball mill

Answer & Solution

10. Pine oil used in froth floatation technique acts as a/an

Answer & Solution

Read More Section(Mechanical Operations)

1.
Length/diameter ratio of a ball mill is

2.
The optimum moisture content in solids to be crushed/ground ranges from __________ percent.

3.
Apron conveyors are used for

4.
Carbon black is pulverised in a

5.
Size reduction of moulding powders, waxes, resins & gums are done in a __________ mill.

6.
Ball mills and tube mills with flint or porcelain balls are used for size reduction of

7.
Shell and leaf filter as compared to plate and frame filter

8.
As particle size is reduced

9.
In case of grinding in a ball mill

10.
Pine oil used in froth floatation technique acts as a/an