Mechanical Engineering - Engineering Materials

1. 

In the middle part of the blast furnace (zone of absorption), the temperature is

A. 400° to 700°C
B. 800°C to 1000°C
C. 1200°C to 1300°C
D. 1500°C to 1700°C

Answer: Option B

Explanation:

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2. 

The temperature in the upper part of the blast furnace (zone of reduction) is __________ that of the middle part.

A. equal to
B. less than
C. more than

Answer: Option B

Explanation:

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3. 

The temperature point at which the change starts on heating the steel is called

A. lower critical point
B. upper critical point
C. point of recalescence
D. point of decalescence

Answer: Option A

Explanation:

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4. 

Aluminium bronze has high resistance to corrosion.

A. True
B. False

Answer: Option B

Explanation:

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5. 

Manganese bronze contains more copper than silicon bronze.

A. Yes
B. No

Answer: Option B

Explanation:

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