Chemical Engineering Basics MCQ Questions & Answers | Chemical Engineering Page-6 section-10

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51.
Catalyst used in the catalytic converter employed in automobiles to convert CO into CO₂ and for complete oxidation of un-burnt hydrocarbons is

A. Nickel

B. Cobalt

C. Vanadium

D. Platinum

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52.
Maximum heat dissipation occurs from a steel wire (k = 0.5 W/m.k) of 15 mm diameter exposed to air (h = 20W/m².k), when the insulation thickness is __________ mm.

A. 15

B. 25

C. 10

D. 30

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53.
Which of the following is prone to cup and cone fracture?

A. Cast iron

B. Soft brass

C. Round specimen of ductile metal

D. Flat tensile specimen of ductile metal

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54.
In the diving apparatus, helium is used along with oxygen, because it is

A. Easily available

B. Not soluble in blood at high pressure

C. Lighter than nitrogen

D. Completely miscible with oxygen

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55.
The maximum thickness of the metal which can be welded using ultrasonic welding is __________ mm.

A. 0.5

B. 3

C. 10

D. 25

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56.
On-off control

A. Fully opens the final control element, when the measured variable is below the set point

B. Fully closes the final control element, when the measured variable is above the set point

C. Is a two position control (fully open or fully closed) control adequate to control a process with slow reaction and minimum dead time or transfer lag

D. None of these

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57.
Which of the following is an unconventional source of energy ?

A. Thermal power

B. Hydroelectric power

C. Nuclear-fusion power

D. Solar power

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58.
Refrigerative cooling employed during long distance transportation of food stuffs is normally done by

A. Ice

B. Liquid nitrogen

C. Liquid oxygen

D. Vacuum evaporation

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59.
Machine tool bodies are usually made of

A. Cast iron

B. Mild steel

C. Wrought iron

D. Copper alloys

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60.
Increase in the entropy of a system represents the

A. Degradation of energy

B. Decrease in system pressure

C. Increase in the availability of energy

D. Increase in the temperature

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Chemical Engineering Basics MCQ Questions & Answers | Chemical Engineering

51. Catalyst used in the catalytic converter employed in automobiles to convert CO into CO2 and for complete oxidation of un-burnt hydrocarbons is

Answer & Solution

52. Maximum heat dissipation occurs from a steel wire (k = 0.5 W/m.k) of 15 mm diameter exposed to air (h = 20W/m2.k), when the insulation thickness is __________ mm.

Answer & Solution

53. Which of the following is prone to cup and cone fracture?

Answer & Solution

54. In the diving apparatus, helium is used along with oxygen, because it is

Answer & Solution

55. The maximum thickness of the metal which can be welded using ultrasonic welding is __________ mm.

Answer & Solution

56. On-off control

Answer & Solution

57. Which of the following is an unconventional source of energy ?

Answer & Solution

58. Refrigerative cooling employed during long distance transportation of food stuffs is normally done by

Answer & Solution

59. Machine tool bodies are usually made of

Answer & Solution

60. Increase in the entropy of a system represents the

Answer & Solution

Read More Section(Chemical Engineering Basics)

51.
Catalyst used in the catalytic converter employed in automobiles to convert CO into CO₂ and for complete oxidation of un-burnt hydrocarbons is

52.
Maximum heat dissipation occurs from a steel wire (k = 0.5 W/m.k) of 15 mm diameter exposed to air (h = 20W/m².k), when the insulation thickness is __________ mm.

53.
Which of the following is prone to cup and cone fracture?

54.
In the diving apparatus, helium is used along with oxygen, because it is

55.
The maximum thickness of the metal which can be welded using ultrasonic welding is __________ mm.

56.
On-off control

57.
Which of the following is an unconventional source of energy ?

58.
Refrigerative cooling employed during long distance transportation of food stuffs is normally done by

59.
Machine tool bodies are usually made of

60.
Increase in the entropy of a system represents the