Chemical Engineering MCQs

Page No. 130

_____________ moulding process cannot be used for thermoplastic plastics?


aCompression

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bExtrusion

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cInjection

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dNone of these

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View Answer Injection

Which of the following metals in not used for coating of the base metal to guard it against corrosion ?


aLead

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bCadmium

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cMagnesium

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dAluminium

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View Answer Magnesium

Out of the following refrigeration cycles, which one has the minimum COP (Co-efficient of performance) ?


aAir cycle

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bCarnot cycle

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cOrdinary vapour compression cycle

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dVapour compression with a reversible expansion engine

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View Answer Air cycle

Cast iron detachable joint is used in __________ pipes.


aSteel

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bCast iron

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cAsbestos cement

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dReinforced cement concrete

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View Answer Steel

With increase in temperature, the atomic heat capacities of all solid elements_________________?


a Increases

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bDecreases

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cRemains unchanged

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dDecreases linearly

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View Answer Increases

Presence of even very minute amount (say 0.1%) of ______________ in copper, reduces its electrical conductivity very seriously?


aBismuth

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bArsenic

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cAntimony

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dBoth B. and C.

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View Answer Both B. and C.

Muntz metal is a/an alloys of____________________?


aMagnesium & tin

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bFerrous material

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cLead & tin

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dCopper & zinc

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View Answer Copper & zinc

Hastelloy comprises of____________________?


aCopper and tin

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bCopper and nickel

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cMolybdenum and nickel

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dLead and tin

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View Answer Molybdenum and nickel

Heat is added at constant pressure in an ideal _____________ cycle?


aStirling

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b Brayton

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cRankine

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dBoth B. and C

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View Answer Both B. and C

Carbon content in steel is ___________________ percent?


a0.1-2

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b4-6

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c2-4

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d0.001-0.01

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View Answer 0.1-2

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