Chemical Engineering - Materials and Construction

1. 

Babbit metals used for making bearings are

A. tin or lead based alloys.
B. short of antifrictional properties.
C. having homogenous microstructure.
D. yellow metals.

Answer: Option A

Explanation:

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2. 

Pipes for bi-cycle frames are made of __________ steel.

A. hot rolled
B. chrome carbon
C. cold rolled
D. stainless

Answer: Option C

Explanation:

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3. 

Which of the following materials may prove unsuitable for handling acetic acid (glacial & anhydrous) at 40°C ?

A. Silicone rubber, teflon, procelain and wood.
B. Nickel, monel, stainless steel and graphite.
C. Aluminium, copper, high silicon iron.
D. Brass, cast iron, mild steel and tin.

Answer: Option D

Explanation:

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4. 

Interchain forces are the weakest in case of

A. plastics
B. fibres
C. elastomers
D. both rubber & elastomers

Answer: Option D

Explanation:

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5. 

__________ possesses viscoelastic properties.

A. Cork
B. Glass
C. Graphite
D. Rubber

Answer: Option D

Explanation:

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