Chemical Engineering MCQs

Page No. 816

A spring material should have low__________________?


aElastic limit

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bDeflection value

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cFatigue resistance

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dNone of these

✓


View Answer None of these

A common disinfectant used in village wells for disinfection of water is __________________?


aFree chlorine

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bBromine

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cIodine

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dPotassium permanganate

✓



Which of the following is not an ore of copper ?


aCryolite

✓


bAzurite

✖


cChalcopyrite

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dMalachite

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View Answer Cryolite

Dislocations are _______________ defects?


aPoint

✖


bLine

✓


cVolume

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dNone of these

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View Answer Line

M10 index of coke indicates its____________________?


aCompressive strength

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bHardness

✖


cAbrasion resistance

✓


dImpact strength

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View Answer Abrasion resistance

Addition of _____________________ to steel does not impart hardness?


aNickel

✖


bCopper

✓


cChromium

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dSilicon

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View Answer Copper

Which of the following is an acidic constituent of B.F. slag ?


aSiO2

✓


bFeO

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cMgO

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dCaO

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View Answer SiO2

Larger length & diameter water pipes are made by____________________?


aElectrical resistance welding

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bDie casting

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cSemi-centrifugal casting

✓


dContinuous casting

✖



Eutectoid composition of carbon steel at room temperature is___________________?


aCementite

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bPearlite

✓


cMartensite

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dFerrite

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View Answer Pearlite

The refrigerant freon-12 is chemically_______________________?


aCCl2F2

✓


bCCl3F

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cCClF3

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dCCl4F

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View Answer CCl2F2

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