Chemical Engineering - Chemical Process

41. 

__________ process is used for the manufacture of sodium carbonate by ammonia soda process.

A. Ostwald's
B. Bosch
C. Solvay
D. Haber's

Answer: Option C

Explanation:

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42. 

Polycaprolactum is commercially known as

A. nylon-6
B. nylon-66
C. dacron
D. rayon

Answer: Option A

Explanation:

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43. 

Frasch process is for

A. making oxygen
B. producing helium
C. mining sulphur
D. making nitrogen

Answer: Option C

Explanation:

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44. 

Very fine suspended and colloidal impurities are removed from water by a process called

A. sedimentation
B. coagulation
C. disinfection
D. softening

Answer: Option B

Explanation:

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45. 

Pitch (a product of coal tar distillation) is always mixed with creosote oil, when it is to be burnt in a burner, because

A. its calorific value is very less.
B. tar neutralises the residual acids present in pitch.
C. it reduces viscosity and imparts fluidity for its transportation through pipelines at economic pressure drop.
D. all (a), (b) and (c).

Answer: Option C

Explanation:

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