Chemical Engineering - Chemical Engineering Basics

16. 

Coating thickness in case of galvanising of steel sheet generally corresponds to the deposition of __________ gms of zinc per m2 of steel strip.

A. 5-10
B. 1000-1500
C. 120-500
D. 1500-3000

Answer: Option C

Explanation:

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17. 

Chlorine acts as a bleaching agent only in the presence of

A. dry air
B. pure oxygen
C. moisture
D. sunlight

Answer: Option C

Explanation:

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18. 

Corona discharge is related to the operation of a/an

A. induction motor.
B. electrostatic precipitator.
C. fast breeder reactor.
D. magneto hydrodynamic generator (MHD).

Answer: Option B

Explanation:

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19. 

Plastics as a material of construction suffer from the drawback of low

A. machinability
B. density
C. strength
D. plastic deformation

Answer: Option C

Explanation:

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20. 

Out of the following, the best material capable of withstanding shock & vibration without the danger of cracking is

A. malleable iron
B. grey cast iron
C. chilled cast iron
D. white cast iron

Answer: Option A

Explanation:

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