Chemical Engineering - Chemical Engineering Basics

11. 

Annealing of a material does not

A. permit its further cold working.
B. soften it.
C. case harden it.
D. none of these.

Answer: Option C

Explanation:

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12. 

Which of the following is not an ore of aluminium ?

A. Troosite
B. Kaolin
C. Alunite
D. Cryolite

Answer: Option A

Explanation:

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13. 

Boiler draught of 10 mm water column is equivalent to

A. 1 kgf/m2
B. 10 kgf/m2
C. 10 kgf/mm2
D. 1 kgf/mm2

Answer: Option B

Explanation:

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14. 

The fugacity of liquid water at 298 K is approximately 3171 Pa. Considering the ideal heat of vaporisation as 43723 J/gm mole, its fugacity at 300 K would be

A. 3171Pa
B. 3567Pa
C. 1.01 x 105Pa
D. 5000Pa

Answer: Option B

Explanation:

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15. 

The leg of a barometric leg pump is longer than the Toricellian leg, which is about __________ metres.

A. 1
B. 5
C. 34
D. 10

Answer: Option D

Explanation:

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