Chemical Engineering - Chemical Engineering Basics

11. 

Baffles provided on the shell side of a shell and tube heat exchanger are meant for

A. providing support for the tubes.
B. improving heat transfer.
C. both 'a' & 'b'.
D. preventing the fouling of tubes & stagnation of shell side fluid.

Answer: Option C

Explanation:

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12. 

When an isolated thermodynamic system executes a process,

A. work is done.
B. heat transfer takes place.
C. mass flow occurs across the boundary of the system.
D. no chemical reaction takes place within the system.

Answer: Option D

Explanation:

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13. 

Brittleness induced due to the presence of sulphur in steel can be reduced by adding

A. manganese
B. magnesium
C. vanadium
D. copper

Answer: Option A

Explanation:

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14. 

Atomic __________ of an element is a whole number.

A. weight
B. number
C. volume
D. radius

Answer: Option B

Explanation:

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15. 

The boiling & freezing points on a newly defined temperature scale in degree 'D' are 400°D & 100°D respectively. The temperature reading corresponding to 60°C on this new temperature scale will be equal to __________ °D.

A. 140
B. 180
C. 240
D. 280

Answer: Option D

Explanation:

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