Chemical Engineering - Chemical Process

16. 

Refractory bricks having high thermal conductivity is desirable, when it is to be used in the

A. L.D. converter
B. blast furnace
C. rotary kiln
D. recuperator

Answer: Option D

Explanation:

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17. 

Bromides contained in hot mother liquor is treated with __________ during manufacture of bromine from sea water.

A. SO3
B. Cl2
C. NH3
D. SO2

Answer: Option B

Explanation:

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18. 

Plasticisers are added to paints to

A. make it corrosion resistant.
B. make glossy surface.
C. give elasticity & prevent cracking of the film.
D. increase atmospheric oxidation.

Answer: Option C

Explanation:

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19. 

Resistance to fusion of the refractory under a steady rising temperature condition is called

A. spalling
B. refractoriness
C. both (a) & (b)
D. neither (a) nor (b)

Answer: Option B

Explanation:

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20. 

Portland cement consists mainly of

A. CaO & SiO2
B. SiO2 & Al2O3
C. CaO & Al2O3
D. CaO & Fe2O3

Answer: Option A

Explanation:

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