Chemical Engineering - Fluid Mechanics

1. 

Glass pipes can be joined by

A. flanges
B. welding
C. soldering
D. bell and spigot joint

Answer: Option D

Explanation:

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2. 

If two capillary tubes of dia 0.5 mm and 1 mm are dipped in a pot containing mercury, then the rise of mercury is

A. same in both the tubes.
B. greater in 1 mm dia tube.
C. greater in 0.5 mm dia tube.
D. zero in both the tubes.

Answer: Option C

Explanation:

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3. 

For laminar flow of a shear thinning liquid in a pipe, if the volumetric flow rate is doubled, the pressure gradient will increase by a factor of

A. 2
B. <2
C. >2
D. 1/2

Answer: Option A

Explanation:

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4. 

Weber number is the ratio of inertial force to __________ force.

A. surface tension
B. gravity
C. viscous
D. elastic

Answer: Option A

Explanation:

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5. 

The curve of metacentre for a floating body __________ the curve of buoyancy.

A. is always below
B. is the evolute of
C. intersects at right angle
D. is tangential to

Answer: Option B

Explanation:

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