CHEMICAL ENGINEERING | Mass Transfer

Dorr thickener is an equipment used for

Byadmin August 29, 2022

Question: Dorr thickener is an equipment used for
[A].

classification

[B].

sedimentation

[C].

clarification

[D].

leaching

Answer: Option B

Explanation:

No answer description available for this question.

Mass Transfer

_______________ extractor is used for the concentration of radioactive nuclear waste?

_______________ extractor is used for the concentration of radioactive nuclear waste?

A. Pulsed column
B. Sieve plate
C. Mixer-settler
D. Bollman

Read More _______________ extractor is used for the concentration of radioactive nuclear waste?
CHEMICAL ENGINEERING | Chemical Process

Anion exchanger is regenerated usually with

Question: Anion exchanger is regenerated usually with
[A].

NaOH
[B].
H2SO4
[C].
hydrazine
[D].
alum solution

Answer: Option A

Explanation:

No answer description available for this question.

Read More Anion exchanger is regenerated usually with
CHEMICAL ENGINEERING | Mass Transfer

A pure drug is administered as a sphere and as a cube. The amount of drug is the same in the two tablets. Assuming that the shape and size do not influence the mass transfer, the ratio of rate of dissolution in water at t = 0 for the cubic to spherical tablet is

Question: A pure drug is administered as a sphere and as a cube. The amount of drug is the same in the two tablets. Assuming that the shape and size do not influence the mass transfer, the ratio of rate of dissolution in water at t = 0 for the cubic to spherical tablet is
[A].

0.54
[B].
1.04
[C].
1.24
[D].
1.94

Answer: Option C

Explanation:

No answer description available for this question.

Read More A pure drug is administered as a sphere and as a cube. The amount of drug is the same in the two tablets. Assuming that the shape and size do not influence the mass transfer, the ratio of rate of dissolution in water at t = 0 for the cubic to spherical tablet is
CHEMICAL ENGINEERING | Fuels and Combustion

In low temperature carbonisation of coal as compared to high temperature carbonisation __________ produced is less.

Question: In low temperature carbonisation of coal as compared to high temperature carbonisation __________ produced is less.
[A].

difference in gross & net calorific value of the coke oven gas
[B].
free carbon content in tar
[C].
yield percentage of coke
[D].
yield of ammonia present in coke oven gas

Answer: Option A

Explanation:

No answer description available for this question.

Read More In low temperature carbonisation of coal as compared to high temperature carbonisation __________ produced is less.
CHEMICAL ENGINEERING | Chemical Process

Contact process of sulphuric acid manufacture

Question: Contact process of sulphuric acid manufacture
[A].

yields acid of higher concentration than chamber process.
[B].
yields acids of lower concentration than chamber process.
[C].
is obsolete.
[D].
eliminates absorber.

Answer: Option A

Explanation:

No answer description available for this question.

Read More Contact process of sulphuric acid manufacture
CHEMICAL ENGINEERING | Chemical Engineering Basics

Electrolytic reduction cell used for conversion of calcined Al2O3 to Al is a carbon lined furnace operating at 800-900 °C. The purpose of electric current supplied to the furnace is to

Question: Electrolytic reduction cell used for conversion of calcined Al2O3 to Al is a carbon lined furnace operating at 800-900 °C. The purpose of electric current supplied to the furnace is to
[A].

achieve very high purity of aluminium (99.9%).
[B].
keep the electrolyte in liquid condition by the generation of heat.
[C].
electrolytically dissociate alumina.
[D].
both(b) & (c).

Answer: Option D

Explanation:

No answer description available for this question.

Read More Electrolytic reduction cell used for conversion of calcined Al2O3 to Al is a carbon lined furnace operating at 800-900 °C. The purpose of electric current supplied to the furnace is to

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