Online Chemical Engineering Test - Chemical Engineering Test - Random

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Total number of questions: 20.
Time allotted: 30 minutes.
Each question carries 1 mark; there are no negative marks.
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Weight of 56 litres of ammonia at N.T.P. is __________ gm.

2.5

42.5

2800

[#]

Which of the following paper does not require a filler during manufacture ?

Bond paper

Writing paper

Blotting paper

Coloured paper

[#]

__________ paint has the maximum absorption coefficient.

Black

Yellow

White

Grey

[#]

Agitated film evaporator is suitable for concentrating __________ liquids.

foaming

viscous

very thin

corrosive

[#]

Which of the following processes in oil refinery does not employ 'cracking' ?

Coking

Visbreaking

Pyrolysis

None of these

[#]

Which of the following processes is used for the production of petroleum coke ?

Stabilisation

Visbreaking

Cracking

Reforming

[#]

Occurrence of 'case hardening' during drying of a high moisture solid cake __________ the drying rate.

increases

decreases

does not affect

exponentially increases

[#]

For an absorber, both equilibrium and operating line will be straight for

concentrated solution and non-isothermal operation.

dilute solution and non-isothermal operation.

dilute solution and isothermal operation.

concentrated solution and isothermal operation.

[#]

Response of a linear control system for a change in set point is called

frequency response

transient response

servo problem

regulator problem

[#]

10.

An isentropic process is carried out at constant

volume

pressure

temperature

all (a), (b) and (c)

[#]

11.

The catalyst in a second order reversible reaction increases the rate of the forward reaction

and decreases that of backward reaction.

and backward reaction equally.

only.

to a greater extent than that of the backward reaction.

[#]

12.

White metal is an alloy of

lead, tin and cadmium

copper, tin and zinc

copper and lead

none of these

[#]

13.

MeV is the unit of

radioactivity

energy

potential difference

none of these

[#]

14.

The new nucleus formed after β-decay of a radioactive element has

less atomic number

less atomic weight

more atomic number

more atomic weight

[#]

15.

Nuclear fuel generally used in reactors is uranium oxide instead of uranium, because the former has higher

melting point, hence can be subjected to higher temperature.

density ; hence core volume for a given power output would be smaller.

resistance to effects of irradiation.

all (a), (b) and (c).

[#]

16.

The method of Lobo and Evans is concerned with the calculation of the

heat absorption in radiant section of a furnace.

heat transfer by forced convection in a reboiler.

heat transfer in vacuum condensers.

mass transfer co-efficient.

[#]

17.

Thoria

has high fusion temperature (> 3000°C) but poor resistance to thermal shock.

has high resistance to basic slags.

which is expensive & radioactive, is used in crucibles for melting high purity metals.

all (a), (b) and (c).

[#]

18.

Furnace atmosphere for softening temperature determination of refractories (in which segar cones are placed) should be

oxidising

neutral

either (a) or (b)

neither (a) nor (b)

[#]

19.

Pick out the wrong statement.

Benzopyrene which causes cancer is present in traces in tobacco, charcoal & petrol driven automobile exhaust.

NO₂ is capable of penetrating the troposphere and can absorb both ultraviolet & visible light.

Hydrocarbon pollutants are produced by sweet gum, oak & natural rubber trees.

H₂S is not at all produced during combustion of sulphur bearing fuels as all the sulphur is oxidised to SO₂.

[#]

20.

Powder metallurgy processing can be used for making

dispersion strengthened copper rod.

self lubricating bearing and cemented carbide.

connecting rod.

piston.

[#]

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