Chemical Engineering - Chemical Engineering Basics

11. 

Fibrous fracture is normally encountered in the __________ materials.

A. hard
B. elastic
C. ductile
D. brittle

Answer: Option C

Explanation:

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12. 

Bad odour in sanitary latrines is reduced by periodically sprinkling

A. bleaching powder.
B. lime powder.
C. aluminium sulphate.
D. none of these.

Answer: Option B

Explanation:

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13. 

__________ has the highest melting point out of the following.

A. Tungsten
B. Zirconium
C. Molybdenum
D. Tantalum

Answer: Option A

Explanation:

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14. 

The only suitable method for hardening the low carbon steel is case hardening. Which of the following is a case hardening process?

A. Cyaniding
B. Sheardising
C. Spherodising
D. None of these

Answer: Option A

Explanation:

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15. 

Annealing of cast iron

A. softens it to facilitate machining.
B. decreases the free carbon.
C. increases the strength.
D. none of these.

Answer: Option A

Explanation:

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