Chemical Engineering - Chemical Engineering Basics

41. 

Carbon supply in pack carburising process is in the form of

A. charcoal
B. calcium carbide
C. hydrocarbon oil
D. graphite

Answer: Option A

Explanation:

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42. 

Water hammer is caused in steam carrying pipelines, because of

A. partial condensation of steam.
B. vibration of the pipeline.
C. high degree of superheat of steam.
D. its exposure to torrential rain.

Answer: Option A

Explanation:

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43. 

Powder metallurgy is used to produce

A. high precision components with complex cavities and sharp features.
B. components of large size.
C. porosity free components.
D. components of such alloys whose constituents do not form alloys readily.

Answer: Option C

Explanation:

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44. 

Catalyst used in the catalytic converter employed in automobiles to convert CO into CO and for complete oxidation of un-burnt hydrocarbons is

A. nickel
B. cobalt
C. vanadium
D. platinum

Answer: Option D

Explanation:

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45. 

For a thermodynamic system undergoing a process, which of the following pairs best expresses the relationship similar to that expressed by the pressure volume plot ?

A. Temperature - entropy.
B. Temperature - pressure.
C. Enthalpy - entropy.
D. Enthalpy-pressure.

Answer: Option A

Explanation:

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