CHEMICAL ENGINEERING | Environmental Engineering

80% less than 200 mesh size particles are called

Byadmin August 12, 2022

Question: 80% less than 200 mesh size particles are called
[A].

smoke

[B].

powder

[C].

grit

[D].

aggregates

Answer: Option B

Explanation:

No answer description available for this question.

Environmental Engineering

For a country like India, where rainfall is mainly confined to one season, the suitable sewerage system will be________________?

For a country like India, where rainfall is mainly confined to one season, the suitable sewerage system will be________________?

A. separate system
B. combined system
C. partially combined system
D. partially separate system

Read More For a country like India, where rainfall is mainly confined to one season, the suitable sewerage system will be________________?
CHEMICAL ENGINEERING | Heat Transfer

Out of 100 kcal/second of incident radiant energy on the surface of a thermally transparent body, 300 kcal/second is reflected back. If the transmissivity of the body is 0.25, the emissivity of the surface will be

Question: Out of 100 kcal/second of incident radiant energy on the surface of a thermally transparent body, 300 kcal/second is reflected back. If the transmissivity of the body is 0.25, the emissivity of the surface will be
[A].

0.35
[B].
0.45
[C].
0.55
[D].
0.85

Answer: Option B

Explanation:

No answer description available for this question.

Read More Out of 100 kcal/second of incident radiant energy on the surface of a thermally transparent body, 300 kcal/second is reflected back. If the transmissivity of the body is 0.25, the emissivity of the surface will be
CHEMICAL ENGINEERING | Fluid Mechanics

A bed of spherical particles (specific gravity 2.5) of uniform size 1500 μm is 0.5 m in diameter and 0.5 m high. In packed bed state, the porosity may be taken as 0.4. Ergun’s equation for the above fluid-particle system (in SI units) is given below : Δ P/L = 375 x 103 VOM + 10.94 x 106 V2OM (SI units) If water is to be used as the fluidising medium, in actual operation, the above bed has a height = 1 m. What is the porosity of the fluidised bed ?

Question: A bed of spherical particles (specific gravity 2.5) of uniform size 1500 μm is 0.5 m in diameter and 0.5 m high. In packed bed state, the porosity may be taken as 0.4. Ergun’s equation for the above fluid-particle system (in SI units) is given below : Δ P/L = 375 x 103 VOM + 10.94 x 106 V2OM (SI units) If water is to be used as the fluidising medium, in actual operation, the above bed has a height = 1 m. What is the porosity of the fluidised bed ?
[A].

0.2
[B].
0.5
[C].
0.7
[D].
0.8

Answer: Option C

Explanation:

No answer description available for this question.

Read More A bed of spherical particles (specific gravity 2.5) of uniform size 1500 μm is 0.5 m in diameter and 0.5 m high. In packed bed state, the porosity may be taken as 0.4. Ergun’s equation for the above fluid-particle system (in SI units) is given below : Δ P/L = 375 x 103 VOM + 10.94 x 106 V2OM (SI units) If water is to be used as the fluidising medium, in actual operation, the above bed has a height = 1 m. What is the porosity of the fluidised bed ?
CHEMICAL ENGINEERING | Fuels and Combustion

Coal is pulverised before burning in large capacity boiler furnaces mainly to

Question: Coal is pulverised before burning in large capacity boiler furnaces mainly to
[A].

ensure its complete combustion.
[B].
facilitate easy ash removal.
[C].
enhance its calorific value.
[D].
provide trouble free operation.

Answer: Option A

Explanation:

No answer description available for this question.

Read More Coal is pulverised before burning in large capacity boiler furnaces mainly to
CHEMICAL ENGINEERING | Chemical Engineering Basics

__________ cycle is the most efficient thermodynamic cycle.

Question: __________ cycle is the most efficient thermodynamic cycle.
[A].

Diesel
[B].
Otto
[C].
Rankine
[D].
Carnot

Answer: Option D

Explanation:

No answer description available for this question.

Read More __________ cycle is the most efficient thermodynamic cycle.
CHEMICAL ENGINEERING | Mass Transfer

A coalescer in a mixer-settler liquid-liquid extraction coloumn

Question: A coalescer in a mixer-settler liquid-liquid extraction coloumn
[A].

comprises of thin bed of substances of extended surface having high porosity.
[B].
helps in increasing the bubble size entering the settler.
[C].
helps in increasing the settling rate of the bubbles.
[D].
all ‘a’, ‘b’, & ‘c’.

Answer: Option D

Explanation:

No answer description available for this question.

Read More A coalescer in a mixer-settler liquid-liquid extraction coloumn

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