Chemical Engineering - Materials and Construction

1. 

Babbit metal (used for making bearings) comprises of

A. mainly tin (85%) and lead.
B. saw dust and iron dust mixture.
C. zinc and aluminium.
D. copper and aluminium.

Answer: Option A

Explanation:

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2. 

Hydrochloric acid is stored in a __________ steel vessel.

A. lead lined
B. rubber lined
C. glass lined
D. stainless

Answer: Option B

Explanation:

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3. 

Chrome vanadium steels usually contain 0.8 to 1.1% Cr, 0.25 to 0.35% C and < 0.25% V. It is

A. used for making axle & shafts of aeroplanes, automobiles and locomotives.
B. having poor fatigue resistance.
C. having poor toughness.
D. not helpful in producing cleaner steel due to oxidising action of vanadium.

Answer: Option A

Explanation:

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4. 

Which of the following alloying elements is present in maximum percentage in high speed steel.

A. Molybdenum
B. Chromium
C. Tungsten
D. Vanadium

Answer: Option C

Explanation:

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5. 

Electronic structure of a material is generally studied by

A. metallurgical microscope
B. electron diffraction
C. spectroscopic techniques
D. X-ray

Answer: Option C

Explanation:

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