CHEMICAL ENGINEERING | Environmental Engineering

Acute danger to human life (i.e. death) exists, if the concentration of CO2 in atmospheric air exceeds __________ percent (by volume).

Byadmin August 12, 2022

Question: Acute danger to human life (i.e. death) exists, if the concentration of CO2 in atmospheric air exceeds __________ percent (by volume).
[A].

[B].

[C].

[D].

Answer: Option D

Explanation:

No answer description available for this question.

CHEMICAL ENGINEERING | Chemical Engineering Basics

Main constituent of bone ash is

Question: Main constituent of bone ash is
[A].

ammonium phosphate.
[B].
calcium phosphate.
[C].
animal charcoal.
[D].
ammonium sulphate.

Answer: Option B

Explanation:

No answer description available for this question.

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CHEMICAL ENGINEERING | Heat Transfer

Heat transfer rate per unit area is called

Question: Heat transfer rate per unit area is called
[A].

thermal conductivity
[B].
heat flux
[C].
heat transfer co-efficient
[D].
thermal diffusivity

Answer: Option B

Explanation:

No answer description available for this question.

Read More Heat transfer rate per unit area is called
CHEMICAL ENGINEERING | Chemical Engineering Basics

A semi-conductor is damaged & behaves like a conductor, on passing a strong electric current through it, because it heats up the crystals & breaks the covalant bonds resulting in __________ electrons.

Question: A semi-conductor is damaged & behaves like a conductor, on passing a strong electric current through it, because it heats up the crystals & breaks the covalant bonds resulting in __________ electrons.
[A].

lack of free
[B].
excess of
[C].
decrease in
[D].
none of these

Answer: Option B

Explanation:

No answer description available for this question.

Read More A semi-conductor is damaged & behaves like a conductor, on passing a strong electric current through it, because it heats up the crystals & breaks the covalant bonds resulting in __________ electrons.
CHEMICAL ENGINEERING | Heat Transfer

Graetz number is given by

Question: Graetz number is given by
[A].

[B].

[C].

[D].

Answer: Option A

Explanation:

No answer description available for this question.

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CHEMICAL ENGINEERING | Chemical Engineering Thermodynamics

If the pressure on 100 c.c. of air is halved, then its volume (at the same temperature) would be __________ c.c.

Question: If the pressure on 100 c.c. of air is halved, then its volume (at the same temperature) would be __________ c.c.
[A].

100
[B].
50
[C].
205
[D].
200

Answer: Option D

Explanation:

No answer description available for this question.

Read More If the pressure on 100 c.c. of air is halved, then its volume (at the same temperature) would be __________ c.c.
CHEMICAL ENGINEERING | Mass Transfer

During dehumidification of unsaturated air wet bulb temperature & partial pressure of vapor are not constant. However, during evaporative cooling process with recirculated water supply, the __________ remains constant.

Question: During dehumidification of unsaturated air wet bulb temperature & partial pressure of vapor are not constant. However, during evaporative cooling process with recirculated water supply, the __________ remains constant.
[A].

wet bulb temperature
[B].
partial pressure of water vapor
[C].
relative humidity
[D].
none of these

Answer: Option A

Explanation:

No answer description available for this question.

Read More During dehumidification of unsaturated air wet bulb temperature & partial pressure of vapor are not constant. However, during evaporative cooling process with recirculated water supply, the __________ remains constant.

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