CHEMICAL ENGINEERING

Window panes of aeroplanes are normally made of_____________________?

Byadmin February 7, 2019August 20, 2021

Window panes of aeroplanes are normally made of_____________________?

A. Perspex (PMMA)
B. Teflon (PTFE)
C. Bakelite (phenol formaldehyde)
D. Polystyrene

CHEMICAL ENGINEERING | Chemical Reaction Engineering

Overall rate of reaction in a heterogenous catalytic reaction depends upon the mass and energy transfer from the fluid to solid surface and its rate of reaction is usually __________ the concentration of catalyst, if it does not entail a chain mechanism.

Question: Overall rate of reaction in a heterogenous catalytic reaction depends upon the mass and energy transfer from the fluid to solid surface and its rate of reaction is usually __________ the concentration of catalyst, if it does not entail a chain mechanism.
[A].

proportional to
[B].
independent of
[C].
inversely proportional to
[D].
proportional to the square of

Answer: Option A

Explanation:

No answer description available for this question.

Read More Overall rate of reaction in a heterogenous catalytic reaction depends upon the mass and energy transfer from the fluid to solid surface and its rate of reaction is usually __________ the concentration of catalyst, if it does not entail a chain mechanism.
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 | Chemical Engineering Thermodynamics

A reasonably general expression for vapour-liquid phase equilibrium at low to moderate pressure is Φi yi P = Yi xi fi° where, Φ is a vapor fugacity component, Yi is the liquid activity co-efficient and fi° is the fugacity of the pure component i. the Ki value (Yi = Ki xi) is therefore, in general a function of

Question: A reasonably general expression for vapour-liquid phase equilibrium at low to moderate pressure is Φi yi P = Yi xi fi° where, Φ is a vapor fugacity component, Yi is the liquid activity co-efficient and fi° is the fugacity of the pure component i. the Ki value (Yi = Ki xi) is therefore, in general a function of
[A].

temperature only.
[B].
temperature and pressure only.
[C].
temperature, pressure and liquid composition xi only.
[D].
temperature, pressure, liquid composition xi and vapour composition yi.

Answer: Option C

Explanation:

No answer description available for this question.

Read More A reasonably general expression for vapour-liquid phase equilibrium at low to moderate pressure is Φi yi P = Yi xi fi° where, Φ is a vapor fugacity component, Yi is the liquid activity co-efficient and fi° is the fugacity of the pure component i. the Ki value (Yi = Ki xi) is therefore, in general a function of
CHEMICAL ENGINEERING | Chemical Engineering Basics

In continuous casting process, graphite moulds are used with a view to providing

Question: In continuous casting process, graphite moulds are used with a view to providing
[A].

heat resisting medium.
[B].
self lubricating qualities.
[C].
non-wetting surfaces.
[D].
chilling effect.

Answer: Option B

Explanation:

No answer description available for this question.

Read More In continuous casting process, graphite moulds are used with a view to providing
CHEMICAL ENGINEERING | Fertiliser Technology

In natural gas, the C/H ratio (by weight) varies in the range of

Question: In natural gas, the C/H ratio (by weight) varies in the range of
[A].

3-4
[B].
8-10
[C].
15-17
[D].
20-25

Answer: Option A

Explanation:

No answer description available for this question.

Read More In natural gas, the C/H ratio (by weight) varies in the range of
CHEMICAL ENGINEERING | Chemical Engineering Thermodynamics

In the equation, PVn = constant, if the value of n is in between 1 and y (i.e. Cp/Cv), then it represents a reversible __________ process.

Question: In the equation, PVn = constant, if the value of n is in between 1 and y (i.e. Cp/Cv), then it represents a reversible __________ process.
[A].

isometric
[B].
polytropic
[C].
isentropic
[D].
isobaric

Answer: Option B

Explanation:

No answer description available for this question.

Read More In the equation, PVn = constant, if the value of n is in between 1 and y (i.e. Cp/Cv), then it represents a reversible __________ process.

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