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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The resistance wire used in a hot wire anemometer for conducting electrical current is made of

copper

tungsten

chromium

aluminium

[#]

Which of the follwoing mechanical conveyors does not come under the division 'scrapers' ?

Ribbon conveyor

Flight conveyor

Bucket elevators

Drag conveyor.

[#]

The speed of a rotary drum vacuum filter may be about __________ rpm.

100

500

[#]

Saponification number of an oil or fat

gives an idea about its molecular weight.

is inversely proportional to its molecular weight.

detects its adulteration.

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

[#]

Alcohol is produced by the

oxidation of an aldehyde

hydrolysis of an ether

esterification of a fat

none of these

[#]

Which of the following is not an abrasive material ?

Bakelite

Pumice

Corundum

Carborundum

[#]

Sulphuric acid treatment of petroleum products removes the __________ materials.

gum forming

color forming

asphaltic

all (a), (b) & (c)

[#]

Humidification involves mass transfer between a pure liquid phase and a fixed gas, which is

insoluble in the liquid

soluble in the liquid

non-ideal in nature

at a fixed temperature

[#]

Unit operation involved in the prilling of urea is

evaporation

drying

crystallisation

both (b) and (c)

[#]

10.

Which of the following controllers has maximum offset ?

P-controller

P-I controller

P-D controller

P-I-D controller

[#]

11.

The conversion X_A and residence time data are collected for zero order liquid phase reaction in a stirred tank reactor. Which of the following will be a straight line ?

X_A Vs . τ

X_A Vs ln τ

X_A/(1 - X_A)Vs τ

X_A(1 - X_A)Vs τ

[#]

12.

Molten phthalic anhydride is stored in a/an __________ vessel.

aluminium

nickel clad steel

lead lined steel

glass lined steel.

[#]

13.

Minimum recommended baffle spacing in a shell and tube heat exchanger is about (where, D = shell diameter )

0.2 D

0.5 D

0.66 D

0.80 D

[#]

14.

The normal range of velocity of water in pipes is __________ m/sec.

0.1-0.5

1-2

10-50

15-30

[#]

15.

Amount of coal lost in ash particle, which is carried through the boiler system, depends upon the

physical nature, ash content and fineness of the coal.

amount of excess air supplied and load on the boiler.

type of burner and combustion chamber.

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

[#]

16.

Gantt charts are used for streamlining the

inventory control

production schedule

sales forecasting

quality control

[#]

17.

With increase in impurities in metals, their corrosion resistances

increase

decrease

remain same

may increase or decrease ; depending on the type of metal

[#]

18.

Cementite is in the lamellar form in the __________ phase of steel.

martensitic

bainitic

pearlitic

ferritic

[#]

19.

Addition of __________ to steel does not help in improving its machinability.

sulphur

silicon

lead

phosphorous

[#]

20.

Which of the following is not used as an alloying element in steel used for making permanent magnetic material ?

Tungsten

Chromium

Vanadium

Cobalt

[#]

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