CHEMICAL ENGINEERING | Fuels and Combustion

Abel apparatus is used for those oils, whose flash points are___°F.

Byadmin August 17, 2022

Question: Abel apparatus is used for those oils, whose flash points are___°F.
[A].

<120

[B].

>120

[C].

>280

[D].

300-600

Answer: Option A

Explanation:

No answer description available for this question.

CHEMICAL ENGINEERING | Chemical Engineering Basics

In hot working, dynamic recovery occurs in

Question: In hot working, dynamic recovery occurs in
[A].

metals of low stacking fault energy.
[B].
metals of high stacking fault energy e.g. α-iron.
[C].
single crystal of Ni-based superalloys.
[D].
none of these.

Answer: Option B

Explanation:

No answer description available for this question.

Read More In hot working, dynamic recovery occurs in
CHEMICAL ENGINEERING | Chemical Engineering Thermodynamics

For spontaneous changes in an isolated system (S = entropy)

Question: For spontaneous changes in an isolated system (S = entropy)
[A].

ds = 0
[B].
ds <0
[C].
ds > 0
[D].
ds = Constant

Answer: Option C

Explanation:

No answer description available for this question.

Read More For spontaneous changes in an isolated system (S = entropy)
Fuels and Combustion

Coke compared to the coal from which it has been made, contains ____________________?

Coke compared to the coal from which it has been made, contains ____________________?

A. Less volatile matter
B. More carbon
C. Greater percentage of ash
D. All A., B. and C.

Read More Coke compared to the coal from which it has been made, contains ____________________?
Fuels and Combustion

Softening temperature of coal ash is a measure of the _____________ of coal?

Softening temperature of coal ash is a measure of the _____________ of coal?

A. Caking tendency
B. Coking tendency
C. Clinkering tendency
D. Size stability

Read More Softening temperature of coal ash is a measure of the _____________ of coal?
Fuels and Combustion

Net calorific value is the gross calorific value less the _______________ heat of water in the product of combustion when cooled to 15°C ?

Net calorific value is the gross calorific value less the _______________ heat of water in the product of combustion when cooled to 15°C ?

A. Sensible
B. Latent
C. Sensible and latent
D. None of these

Read More Net calorific value is the gross calorific value less the _______________ heat of water in the product of combustion when cooled to 15°C ?
CHEMICAL ENGINEERING | Chemical Reaction Engineering

‘If the catalyst pore size is small in comparison with the mean free path, collisions with the pore wall controls the process’. The diffusivity under this condition is called ‘Knudsen diffusivity’, which is affected by the

Question: ‘If the catalyst pore size is small in comparison with the mean free path, collisions with the pore wall controls the process’. The diffusivity under this condition is called ‘Knudsen diffusivity’, which is affected by the
[A].

pressure
[B].
temperature
[C].
both (a) & (b)
[D].
neither (a) nor (b)

Answer: Option B

Explanation:

No answer description available for this question.

Read More ‘If the catalyst pore size is small in comparison with the mean free path, collisions with the pore wall controls the process’. The diffusivity under this condition is called ‘Knudsen diffusivity’, which is affected by the

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