CHEMICAL ENGINEERING | Heat Transfer

Calburn analogy is applicable for the value of Prandtl number from

Byadmin August 25, 2022

Question: Calburn analogy is applicable for the value of Prandtl number from
[A].

0.001 to 1

[B].

0.6 to 120

[C].

0.5 to 5

[D].

120 to 400

Answer: Option B

Explanation:

No answer description available for this question.

CHEMICAL ENGINEERING | Chemical Reaction Engineering

Fluidised bed reactor is characterised by

Question: Fluidised bed reactor is characterised by
[A].

uniformity of temperature.
[B].
comparatively smaller equipment.
[C].
very small pressure drop.
[D].
absence of continuous catalyst regeneration facility.

Answer: Option A

Explanation:

No answer description available for this question.

Read More Fluidised bed reactor is characterised by
CHEMICAL ENGINEERING | Chemical Process

Oils are partially hydrogenated (not fully) to manufacture vanaspati, because fully saturated solidified oils

Question: Oils are partially hydrogenated (not fully) to manufacture vanaspati, because fully saturated solidified oils
[A].

cause cholesterol build up and blood clotting.
[B].
are prone to rancid oxidation.
[C].
always contain some amount of nickel (as their complete removal is very difficult).
[D].
have affinity to retain harmful sulphur compounds.

Answer: Option A

Explanation:

No answer description available for this question.

Read More Oils are partially hydrogenated (not fully) to manufacture vanaspati, because fully saturated solidified oils
CHEMICAL ENGINEERING | Fluid Mechanics

Air vessel provided in a reciprocating pump is for

Question: Air vessel provided in a reciprocating pump is for
[A].

increasing the acceleration head.
[B].
making the friction in pipe uniform.
[C].
decreasing the acceleration head.
[D].
none of these.

Answer: Option B

Explanation:

No answer description available for this question.

Read More Air vessel provided in a reciprocating pump is for
CHEMICAL ENGINEERING | Chemical Engineering Basics

Increasing the carbon content of steel

Question: Increasing the carbon content of steel
[A].

reduces the upper shelf energy.
[B].
increasing the ductility transition temperature.
[C].
decreases brittleness.
[D].
decreases hardness.

Answer: Option B

Explanation:

No answer description available for this question.

Read More Increasing the carbon content of steel
CHEMICAL ENGINEERING | Mass Transfer

During the constant rate period of drying of a solid,

Question: During the constant rate period of drying of a solid,
[A].

increased air humidity decreases the rate of drying.
[B].
increasing the air temperature decreases the drying rate.
[C].
surface evaporation of unbound moisture occurs.
[D].
none of these.

Answer: Option C

Explanation:

No answer description available for this question.

Read More During the constant rate period of drying of a solid,
CHEMICAL ENGINEERING | Chemical Reaction Engineering

For every 10°C rise in temperature, the rate of chemical reaction doubles. When the temperature is increased from 30 to 70°C, the rate of reaction increases __________ times.

Question: For every 10°C rise in temperature, the rate of chemical reaction doubles. When the temperature is increased from 30 to 70°C, the rate of reaction increases __________ times.
[A].

8
[B].
12
[C].
16
[D].
32

Answer: Option C

Explanation:

No answer description available for this question.

Read More For every 10°C rise in temperature, the rate of chemical reaction doubles. When the temperature is increased from 30 to 70°C, the rate of reaction increases __________ times.

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