Chemical Engineering - Chemical Engineering Basics

11. 

The total frictional resistance to fluid flow does not depend upon the

A. roughness of the surface.
B. fluid pressure.
C. fluid density.
D. fluid velocity.

Answer: Option B

Explanation:

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12. 

Stretcher strains found in a low carbon sheet are associated with the

A. texture.
B. dislocation density.
C. yield point phenomenon.
D. thickness of the sheet.

Answer: Option C

Explanation:

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13. 

The most important consideration, while designing the refrigeration system of an aircraft is that the refrigeration system

A. is as light as possible.
B. has very high C.O.P.
C. employs minimum quantity of refrigerant.
D. consumer minimum horse power.

Answer: Option A

Explanation:

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14. 

Though tin occurs lower than iron in the electrochemical series, yet it is coated on steel for corrosion protection, because of its

A. lower cost.
B. abundant availability.
C. resistance to vegetable acids as the tin plate are commercially used in 'canning' industry.
D. none of these.

Answer: Option C

Explanation:

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15. 

Which of the following is resistant to the action of both heat & chemicals ?

A. Boro silicate glass,
B. Silica glass.
C. Soda lime glass.
D. none of these.

Answer: Option A

Explanation:

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