Chemical Engineering MCQs

Page No. 130

_____________ moulding process cannot be used for thermoplastic plastics?


aCompression


bExtrusion


cInjection


dNone of these


View Answer Injection

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


aLead


bCadmium


cMagnesium


dAluminium


View Answer Magnesium

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


aAir cycle


bCarnot cycle


cOrdinary vapour compression cycle


dVapour compression with a reversible expansion engine


View Answer Air cycle

Cast iron detachable joint is used in __________ pipes.


aSteel


bCast iron


cAsbestos cement


dReinforced cement concrete


View Answer Steel

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


a Increases


bDecreases


cRemains unchanged


dDecreases linearly


View Answer Increases

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


aBismuth


bArsenic


cAntimony


dBoth B. and C.


View Answer Both B. and C.

Muntz metal is a/an alloys of____________________?


aMagnesium & tin


bFerrous material


cLead & tin


dCopper & zinc


View Answer Copper & zinc

Hastelloy comprises of____________________?


aCopper and tin


bCopper and nickel


cMolybdenum and nickel


dLead and tin


View Answer Molybdenum and nickel

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


aStirling


b Brayton


cRankine


dBoth B. and C


View Answer Both B. and C

Carbon content in steel is ___________________ percent?


a0.1-2


b4-6


c2-4


d0.001-0.01


View Answer 0.1-2

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