Chemical Engineering - Materials and Construction

1. 

Karbate is

A. a mixture of iron dust and saw dust.
B. carbon impregnated with resin (usually bakelite).
C. an acid resistant material.
D. both (b) and (c).

Answer: Option D

Explanation:

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2. 

To improve the machinability of steel by its softening, it is subjected to

A. cold working
B. annealing
C. shot blasting
D. heating

Answer: Option B

Explanation:

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3. 

Which one has the maximum tensile strength out of the following ?

A. Nodular cast iron
B. pig iron
C. white cast iron
D. grey cast iron

Answer: Option A

Explanation:

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4. 

Material of construction of pipe generally used for conveying water in India is

A. stainless steel
B. cast iron
C. wrought iron
D. lead lined steel

Answer: Option B

Explanation:

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5. 

Which of the following is the softest material ?

A. Quartz
B. Calcite
C. Corrundum
D. Flourite

Answer: Option B

Explanation:

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