Chemical Engineering Basics MCQ Questions & Answers | Chemical Engineering

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51.
__________ number determines whether the fluid flow in an open channel is supercritical, critical or sub-critical.

A. Mach

B. Reynolds

C. Froude

D. Weber

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52.
Production of a hollow product by inflation of a tube or parison is called the __________ process.

A. Blow moulding

B. Calendering

C. Extrusion

D. Injection

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53.
The maximum percentage of chromium that can be added to steel is about

A. 12

B. 18

C. 24

D. 30

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54.
Vernier calipers can not be used to measure the

A. I.D. & O.D. of the shaft

B. Thickness of parts

C. Depth of holes

D. Clearance between two mating surfaces

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55.
The majority charge carriers in p-type silicon are

A. Free electrons

B. Ions

C. Conduction electrons

D. Holes

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56.
Water hammer is caused in steam carrying pipelines, because of

A. Partial condensation of steam

B. Vibration of the pipeline

C. High degree of superheat of steam

D. Its exposure to torrential rain

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57.
Cascade control is

A. The continuous adjustment of the set point index of an automatic control loop by a primary (master) controller

B. Used when changes in process conditions cause serious upsets in the controlled variable

C. Useful to control flow from temperature

D. All of the above

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58.
Case hardening is not done by

A. Nitriding

B. Hot dipping

C. Electroplating

D. Both B & C

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59.
Cassiterite is an ore of

A. Tin

B. Lead

C. Molybdenum

D. Chromium

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60.
Which of the following parameters is not responsible for the heat loss from a hot steam carrying bare pipe surface located in a room without fans ?

A. Emissivity of pipe surface

B. Diameter & length of the pipe

C. Temperature of hot pipe surface & that of air in the room

D. None of these

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Chemical Engineering Basics MCQ Questions & Answers | Chemical Engineering

51. __________ number determines whether the fluid flow in an open channel is supercritical, critical or sub-critical.

Answer & Solution

52. Production of a hollow product by inflation of a tube or parison is called the __________ process.

Answer & Solution

53. The maximum percentage of chromium that can be added to steel is about

Answer & Solution

54. Vernier calipers can not be used to measure the

Answer & Solution

55. The majority charge carriers in p-type silicon are

Answer & Solution

56. Water hammer is caused in steam carrying pipelines, because of

Answer & Solution

57. Cascade control is

Answer & Solution

58. Case hardening is not done by

Answer & Solution

59. Cassiterite is an ore of

Answer & Solution

60. Which of the following parameters is not responsible for the heat loss from a hot steam carrying bare pipe surface located in a room without fans ?

Answer & Solution

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51.
__________ number determines whether the fluid flow in an open channel is supercritical, critical or sub-critical.

52.
Production of a hollow product by inflation of a tube or parison is called the __________ process.

53.
The maximum percentage of chromium that can be added to steel is about

54.
Vernier calipers can not be used to measure the

55.
The majority charge carriers in p-type silicon are

56.
Water hammer is caused in steam carrying pipelines, because of

57.
Cascade control is

58.
Case hardening is not done by

59.
Cassiterite is an ore of

60.
Which of the following parameters is not responsible for the heat loss from a hot steam carrying bare pipe surface located in a room without fans ?