Chemical Engineering MCQs

Page No. 828

In practice, the compression ratio of compression-ignition (CI) engine ranges from ______________________?


a15 to 25

✓


b5 to 10

✖


c40 to 55

✖


d60 to 70

✖


View Answer 15 to 25

The specific gravity of coal depends mainly on its __________________ content ?


aCarbon

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bVolatile matter

✖


cAsh

✖


dMoisture

✓


View Answer Moisture

The refractory lining of the bottom in a basic electric arc furnace is made of___________________?


aSilica

✖


bAlumina

✖


cMagnesia

✓


dFireclay

✖


View Answer Magnesia

Unit of viscosity in CGS system is_______________________?


agm .cm-1 sec-1

✓


bgm . cm2 . sec-2

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cgm .cm-2, sec-1

✖


dgm . cm . sec-1

✖


View Answer gm .cm-1 sec-1

A dummy activity is used in PERT network to describe the_____________________?


aPrecedence relationship

✓


bResource idleness

✖


cResource restriction

✖


dNecessary time delay

✖



Carnot cycle is also termed as the constant _________________ cycle in thermodynamics?


aEntropy

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bPressure

✖


cVolume

✖


dHeat

✓


View Answer Heat

Large diameter reinforced cement concrete (RCC) pipes are generally joined by ____________________ joint ?


aFlanged iron

✖


bCollar

✓


cFlexible

✖


dExpansion

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View Answer Collar

Matte smelting is used in the extraction of_____________________?


aLead

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bZinc

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cAluminium

✖


dCopper

✓


View Answer Copper

The ratio of mass of a neutron to that of an electron is about 1839. What is the ratio of the mass of a proton to that of an electron ?


a159

✖


b1837

✖


c2537

✓


d10000

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View Answer 2537

Good design of the casing of a centrifugal pump aims at minimising the __________________________?


aCavitation

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bFrictional losses

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cKinetic energy loss

✓


dStatic head

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View Answer Kinetic energy loss

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