Chemical Engineering - Chemical Engineering Basics

16. 

Photographic plates are coated with

A. silver nitrate
B. silver halide
C. calcium silicate
D. metallic silver

Answer: Option B

Explanation:

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17. 

Hardening of steel is not possible, unless it is heated __________ critical point.

A. above the highest
B. above the lowest
C. between the first & second
D. between the second & third

Answer: Option B

Explanation:

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18. 

Isotropic materials have the same __________ in all directions.

A. induced stresses
B. density
C. elastic properties
D. thermal properties

Answer: Option C

Explanation:

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19. 

The most important requirement for aluminium industry is the availability of cheap

A. ore
B. electrical power
C. labour
D. & abundant water

Answer: Option B

Explanation:

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20. 

Spheriodising of a material is a/an __________ process.

A. normalising
B. annealing
C. tempering
D. hardening

Answer: Option B

Explanation:

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