Chemical Engineering Basics MCQ Questions & Answers

11

The driving force for the sintering of a powder compact is

A) Strain energy B) Surface energy C) Volume energy D) Stacking fault energy

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Answer & Solution

Answer: Option B

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12

The moment of inertia of a body comes into play in __________ motion.

A) Curvilinear B) Linear C) Rotational D) None of these

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Answer & Solution

Answer: Option C

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13

Overheating of satellites during re-entry to earth is controlled by

A) Thick insulation B) Ceramic lining C) Cooling by flow of air over the surface D) None of these

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Answer & Solution

Answer: Option C

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14

Pick out the wrong statement.

A) Erosion corrosion which is identified by surface grooves, occurs due to the combined action of corrosive environment and mechanical abrasion B) Stress corrosion occurs due to the combined action of corrosive environment and the compressive stress C) Stainless steel is prone to stress corrosion in solution containing chloride ion D) In case of stress corrosion, the direction of crack propagation is perpendicular to the applied tensile stress

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Answer & Solution

Answer: Option B

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15

Ferromagnetic material owe their properties to __________ inner sub-shells.

A) Completely filled B) Partially filled C) Equally filled D) Vacant

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Answer & Solution

Answer: Option B

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16

Which of the following mainly decides the current to be employed is arc welding?

A) Electrode size B) Plate thickness C) Voltage across the arc D) Welded portion length

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Answer & Solution

Answer: Option A

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17

The delivery pressure of boiler feed water pump compared to the boiler steam pressure is

A) Same B) Slightly less C) Slightly more D) Much more

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Answer & Solution

Answer: Option C

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18

The radioactive isotope of hydrogen is

A) Deuterium B) Tritium C) Protium D) None of these

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Answer & Solution

Answer: Option B

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19

In the floatation process, pine oil is used as the

A) Collector B) Activator C) Frother D) Depressant

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Answer & Solution

Answer: Option C

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20

Normalising does not __________ of a metal.

A) Improve machinability & tensile strength B) Remove internal stresses C) Refine the structure D) Remove strains caused by cold working

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Answer & Solution

Answer: Option B

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Chemical Engineering Basics MCQ Questions & Answers | Chemical Engineering