Chemical Engineering Basics - Chemical Engineering Questions and Answers

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Chalcopyrite is an ore of

lead

aluminium

copper

zinc

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The following is employed as sacrificial anode to provide cathodic protection to ships, pipelines and storage tanks.

Iron

Copper

Nickel

Magnesium

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Heat transfer by __________ is almost absent in case of fluidised bed drying operation.

radiation

conduction

convection

both (b) & (c)

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Increasing the carbon content of steel

reduces the upper shelf energy.

increasing the ductility transition temperature.

decreases brittleness.

decreases hardness.

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__________ metal is used as a bearing liner material.

Pewter

White

Babbit

Gun

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Sand used to stop the green sand from sticking to the pattern is termed as the __________ sand.

parting

synthetic

loam

dry

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Brazing filler metal used for joining steel plates

melts below the melting points of base metals.

melts below 300°C.

is copper phosphorous alloy.

is copper.

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Fine grain size in metallic material will

increase the yield strength.

increase the creep strength.

increase the fatigue strength.

decrease the impact strength.

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Electrometallurgical methods of metal extraction is normally used for those metals

whose oxide/ore is not reduced by carbon.

which fall in the category of alkali & alkaline earth metals.

which stands higher in the electrochemical series of the metal.

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