Materials and Construction

91. Brinell Hardness Number (BHN) for talc is approximately in the range of

1. 43952
2. 20-30
3. 100 -150
4. 200 - 250

View answer

92. Bronze is an alloy of copper and

1. Lead
2. Tin
3. Nickel
4. Zinc

View answer

93. Bush bearings are made of

1. Mild steel
2. Phosphorous bronze
3. White metal alloys
4. None of these

View answer

94. Carbon content in plain carbon steel is _________ percent.

1. 0.1 to 0.15
2. 0.35 to 0.45
3. 0.65 to 0.80
4. 0.85 to 1.2

View answer

95. Carbon content in steel is _________ percent.

1. 0.1-2
2. 43986
3. 43923
4. 0.001-0.01

View answer

96. Carbon is present in steel wholly in the

1. Combined form
2. Free state as graphite
3. Both (A) and (B)
4. Neither (A) nor (B)

View answer

97. Carbon is present in the combined form (carbide) in case of

1. Pig iron
2. Steel
3. Ferroalloys
4. All (A), (B) & (C)

View answer

98. Carbon is present in the uncombined (graphitic) form in case of

1. Cast iron
2. Steel
3. Ferroalloy
4. None of these

View answer

99. Carbon percentage in medium carbon steel is around

1. 0.1 to 0.35
2. 0.35 to 0.5
3. 0.8 to 1.4
4. 1 to 1. 5

View answer

100. Carbon percentage is the same in cast iron and

1. Wrought iron
2. Pig iron
3. Mild steel
4. High silicon (14%) iron

View answer