Chemical Engineering Basics - Chemical Engineering Questions and Answers

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Percentage of gaunge is maximum in the ore of

iron

gold

zinc

copper

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The forms in which various metals and non metals occur in nature are called minerals. Which of the following is not a metallic ferrous mineral?

Cassiterite

Sphalerite

Chalcopyrite

Calcite

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Pick out the wrong statement.

Dry bulb temperature, wet bulb temperature & dew point are the same in case of saturated air.

Dew point is reached by cooling the humid air at constant moisture content.

Heating of humid air is done for its dehumidification.

none of these.

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The most commonly used material for sewers for carrying sewage in the normal situation is

asbestos cement

stainiess steel

stoneware

cast iron

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Filler metal is used in __________ welding.

braze

electric spot

projection

seam

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Acetylene should never be conveyed through __________ pipe, as it forms an unstable compound that dissociates violently at the slightest shock.

stainless steel

copper

aluminium

brass

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Which of the following contains the least percentage of carbon ?

Pig iron

Wrought iron

Cast iron

Malleable iron

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Electric arc furnace is employed mainly for the production of __________ steel.

high carbon

alloy

mild

plain carbon

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Heat treatment of steel is done mainly to change its

mechanical properties.

physical properties,

chemical composition.

all 'a', 'b' & 'c'.