Introduction to Metallurgy MCQ Questions and Answers | Metallurgical Engineering Page-9 section-1

81.
Secondary electrons in scanning electron microscope is collected by

A. specimen

B. anode

C. vacuum chamber

D. cathode

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82.
Image formation in electron microscope is based on

A. column length

B. electron number

C. differential scattering

D. specimen size

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83.
Match the following features in tensile stress-strain curves.

A. Yield drop 1. Strain ageing

B. Serrations 2. Superplasticity

C. Increase in flow stress with plastic deformation 3. Dislocation pinning

D. 1000% uniform strain 4. Dislocation multiplication

A. A-3, B-1, C-2, D-4

B. A-3, B-1, C-4, D-2

C. A-3, B-2, C-4, D-1

D. A-4, B-3, C- 2, D-1

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84.
The advantages of the scanning electron microscope (SEM) include all of the following except:

A. high magnification

B. great depth of focus

C. ability to polarize light

D. high resolution

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85.
When a zinc metal rod is immersed in dilute hydrochloric add, it results in

A. Evolution of hydrogen

B. Evolution of chlorine

C. Evolution of oxygen

D. No evolution of any gas

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86.
The total number of possible heat transfer mode (s) is

A. 1

B. 2

C. 3

D. 4

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87.
Differential scanning calorimetry (DSC) is a technique to measure-

A. specific heat

B. thermal expansion

C. electrical conductivity

D. impact energy

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88.
One of the methods of purification of leach liquor is ion exchange which involves exchange between

A. two liquid phases

B. a gaseous phases and a liquid phase

C. a liquid phase and an organic resin phase

D. a solid phase and a gas phase

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89.
Which part of the compound microscope helps in gathering and focusing light rays on the specimen to be viewed?

A. Eyepiece lens

B. Objective lens

C. Condenser lens

D. Magnifying lens

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A. Yield drop	1. Strain ageing
B. Serrations	2. Superplasticity
C. Increase in flow stress with plastic deformation	3. Dislocation pinning
D. 1000% uniform strain	4. Dislocation multiplication

Introduction to Metallurgy MCQ Questions and Answers | Metallurgical Engineering

81. Secondary electrons in scanning electron microscope is collected by

Answer & Solution

82. Image formation in electron microscope is based on

Answer & Solution

83. Match the following features in tensile stress-strain curves. A. Yield drop 1. Strain ageing B. Serrations 2. Superplasticity C. Increase in flow stress with plastic deformation 3. Dislocation pinning D. 1000% uniform strain 4. Dislocation multiplication

Answer & Solution

84. The advantages of the scanning electron microscope (SEM) include all of the following except:

Answer & Solution

85. When a zinc metal rod is immersed in dilute hydrochloric add, it results in

Answer & Solution

86. The total number of possible heat transfer mode (s) is

Answer & Solution

87. Differential scanning calorimetry (DSC) is a technique to measure-

Answer & Solution

88. One of the methods of purification of leach liquor is ion exchange which involves exchange between

Answer & Solution

89. Which part of the compound microscope helps in gathering and focusing light rays on the specimen to be viewed?

Answer & Solution

81.
Secondary electrons in scanning electron microscope is collected by

82.
Image formation in electron microscope is based on

83.
Match the following features in tensile stress-strain curves.

A. Yield drop 1. Strain ageing

B. Serrations 2. Superplasticity

C. Increase in flow stress with plastic deformation 3. Dislocation pinning

D. 1000% uniform strain 4. Dislocation multiplication

84.
The advantages of the scanning electron microscope (SEM) include all of the following except:

85.
When a zinc metal rod is immersed in dilute hydrochloric add, it results in

86.
The total number of possible heat transfer mode (s) is

87.
Differential scanning calorimetry (DSC) is a technique to measure-

88.
One of the methods of purification of leach liquor is ion exchange which involves exchange between

89.
Which part of the compound microscope helps in gathering and focusing light rays on the specimen to be viewed?