CHEMICAL ENGINEERING | Chemical Engineering Basics

Nusselt number/Biot number varies

Byadmin August 8, 2022

Question: Nusselt number/Biot number varies
[A].

inversely with thermal conductivity.

[B].

directly with heat transfer co-efficient.

[C].

directly with thermal conductivity.

[D].

inversely with the dimension of the solid.

Answer: Option A

Explanation:

No answer description available for this question.

CHEMICAL ENGINEERING | Fuels and Combustion

Naphthalene is used for making

Question: Naphthalene is used for making
[A].

insecticides (e.g. moth balls).
[B].
unsaturated polyesters.
[C].
drug intermediates e.g. β-naphthol.
[D].
all (a), (b) and (c).

Answer: Option D

Explanation:

No answer description available for this question.

Read More Naphthalene is used for making
CHEMICAL ENGINEERING | Fertiliser Technology

Excessive use of chemical fertilisers causes shrivelling of the roots and wilting of the plant, because the

Question: Excessive use of chemical fertilisers causes shrivelling of the roots and wilting of the plant, because the
[A].

osmotic pressure of the soil water becomes less than that of the plant sap.
[B].
soil becomes too alkaline.
[C].
osmotic pressure of the soil water becomes higher than that of the plant sap.
[D].
soil becomes too acidic.

Answer: Option C

Explanation:

No answer description available for this question.

Read More Excessive use of chemical fertilisers causes shrivelling of the roots and wilting of the plant, because the
Chemical Engineering Basics

In a totally irreversible isothermal expansion process for an ideal gas, ΔE = 0, ΔH = 0. Then ΔQ and ΔS will be_______________?

In a totally irreversible isothermal expansion process for an ideal gas, ΔE = 0, ΔH = 0. Then ΔQ and ΔS will be_______________?

A. ΔQ = 0, ΔS=0
B. ΔQ = 0, ΔS = +ve
C. ΔQ = 0, ΔS = -ve
D. ΔQ = +ve, ΔS= +ve

Read More In a totally irreversible isothermal expansion process for an ideal gas, ΔE = 0, ΔH = 0. Then ΔQ and ΔS will be_______________?
CHEMICAL ENGINEERING | Heat Transfer

An evaporator while concentrating an aqueous solution from 10 to 40% solids evaporates 30000 kg of water. The amount of solids handled by the system in kg is

Question: An evaporator while concentrating an aqueous solution from 10 to 40% solids evaporates 30000 kg of water. The amount of solids handled by the system in kg is
[A].

4000
[B].
9000
[C].
4600
[D].
3000

Answer: Option A

Explanation:

No answer description available for this question.

Read More An evaporator while concentrating an aqueous solution from 10 to 40% solids evaporates 30000 kg of water. The amount of solids handled by the system in kg is
CHEMICAL ENGINEERING | Mass Transfer

During drying of a solid, the critical moisture content increases with

Question: During drying of a solid, the critical moisture content increases with
[A].

decreased drying rate
[B].
increased thickness of the solid
[C].
increased drying rate
[D].
both (b) and (c).

Answer: Option D

Explanation:

No answer description available for this question.

Read More During drying of a solid, the critical moisture content increases with
CHEMICAL ENGINEERING | Fuels and Combustion

Coke oven gas compared to blast furnace gas is

Question: Coke oven gas compared to blast furnace gas is
[A].

more explosive and inflammable.
[B].
less poisonous.
[C].
lighter.
[D].
all (a), (b) and (c).

Answer: Option D

Explanation:

No answer description available for this question.

Read More Coke oven gas compared to blast furnace gas is

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