Chemical Process - Chemical Engineering Questions and Answers

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Calcination of limestone is not done in a __________ kiln for producing lime.

vertical shaft

rotary

fluidised bed

fixed bed

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Neoprene is a

monomer

synthetic rubber

polyester

none of these

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Saponification value/number of an oil or fat is a measure of its

fatty acid content.

degree of unsaturation of the fatty acids present in it.

average molecular weight.

insoluble fatty acid content.

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Ethyl alcohol cannot be produced

from waste sulphite substrate of paper mills.

by esterification and hydroloysis of ethylene.

from molasses.

none of these.

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Exothermic condensation reaction of monochlorobenzene with chloral in presence of 20% oleum as catalyst produces DDT. The reaction temperature is maintained at __________ °C.

15-30

90-100

250-300

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Cement mainly contains

CaO, SiO₂, Al₂O₃

MgO, SiO₂, K₂O

Al₂O₃, MgO, Fe₂O₃

CaO, MgO, K₂O

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Sand and __________ is fused at 1300°C, to produce sodium silicate.

limestone

soda ash

coke

sodium sulphate

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Coke used for the production of calcium carbide should have

low ash content.

low ignition temperature.

high electrical resistivity.

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

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Sucrose is a disaccharide consisting of

glucose and glucose

glucose and fructose

glucose and galactose

fructose and galactose