CHEMICAL ENGINEERING | Chemical Engineering Basics

Out of the following, the rays having the lowest wavelength is the

Byadmin July 30, 2022

Question: Out of the following, the rays having the lowest wavelength is the
[A].

radio waves

[B].

ultrasonic waves

[C].

infra red rays

[D].

X-rays

Answer: Option A

Explanation:

No answer description available for this question.

CHEMICAL ENGINEERING | Environmental Engineering

From pollution control point of view, the maximum permissible concentration of sulphur dioxide in atmospheric air is about __________ ppm.

Question: From pollution control point of view, the maximum permissible concentration of sulphur dioxide in atmospheric air is about __________ ppm.
[A].

1
[B].
5
[C].
50
[D].
500

Answer: Option B

Explanation:

No answer description available for this question.

Read More From pollution control point of view, the maximum permissible concentration of sulphur dioxide in atmospheric air is about __________ ppm.
CHEMICAL ENGINEERING | Mass Transfer

Fenske equation determines the

Question: Fenske equation determines the
[A].

maximum number of ideal plates.
[B].
height of the distillation column.
[C].
minimum number of theoretical plates.
[D].
optimum reflux ratio.

Answer: Option C

Explanation:

No answer description available for this question.

Read More Fenske equation determines the
CHEMICAL ENGINEERING | Chemical Reaction Engineering

‘If the catalyst pore size is small in comparison with the mean free path, collisions with the pore wall controls the process’. The diffusivity under this condition is called ‘Knudsen diffusivity’, which is affected by the

Question: ‘If the catalyst pore size is small in comparison with the mean free path, collisions with the pore wall controls the process’. The diffusivity under this condition is called ‘Knudsen diffusivity’, which is affected by the
[A].

pressure
[B].
temperature
[C].
both (a) & (b)
[D].
neither (a) nor (b)

Answer: Option B

Explanation:

No answer description available for this question.

Read More ‘If the catalyst pore size is small in comparison with the mean free path, collisions with the pore wall controls the process’. The diffusivity under this condition is called ‘Knudsen diffusivity’, which is affected by the
CHEMICAL ENGINEERING | Chemical Engineering Basics

Magnesium addition to cast iron increases its

Question: Magnesium addition to cast iron increases its
[A].

corrosion resistance.
[B].
creep strength.
[C].
ductility and strength in tension.
[D].
hardness.

Answer: Option C

Explanation:

No answer description available for this question.

Read More Magnesium addition to cast iron increases its
Chemical Engineering Basics

The specific gravity of coal depends mainly on its __________________ content ?

The specific gravity of coal depends mainly on its __________________ content ?

A. Carbon
B. Volatile matter
C. Ash
D. Moisture

Read More The specific gravity of coal depends mainly on its __________________ content ?
CHEMICAL ENGINEERING | Fluid Mechanics

Air vessel fitted to a reciprocating pump

Question: Air vessel fitted to a reciprocating pump
[A].

increases the work done.
[B].
decreases the work done.
[C].
causes cavitation.
[D].
results in non-uniform discharge.

Answer: Option B

Explanation:

No answer description available for this question.

Read More Air vessel fitted to a reciprocating pump

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