Chemical Engineering - Materials and Construction

41. 

German silver in an alloy of

A. copper, nickel and zinc.
B. copper, aluminium and silver.
C. silver, zinc and aluminium.
D. silver, nickel and zinc.

Answer: Option A

Explanation:

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42. 

A suitable material of construction to use with fuming sulphuric acid is

A. carbon steel
B. stainless steel type 304
C. nickel
D. monel

Answer: Option D

Explanation:

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43. 

Which of the following crystal structures characterises the austenitic stainless steel?

A. Simple hexagonal
B. Body centred cubic
C. Face centred cubic
D. None of these

Answer: Option C

Explanation:

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44. 

Caustic soda is produced in a mercury cell having anode and cathode made respectively of moving mercury and

A. moving mercury and graphite.
B. graphite and moving mercury.
C. moving mercury and carbon.
D. moving mercury and crimped steel wire.

Answer: Option B

Explanation:

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45. 

Addition of __________ in steel can help in increasing the depth of hardness.

A. nickel
B. chromium
C. vanadium
D. tungsten

Answer: Option D

Explanation:

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