Chemical Process - Chemical Engineering Questions and Answers

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Polycaprolactum is commercially known as

nylon-6

nylon-66

dacron

rayon

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Frasch process is for

making oxygen

producing helium

mining sulphur

making nitrogen

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Very fine suspended and colloidal impurities are removed from water by a process called

sedimentation

coagulation

disinfection

softening

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Pitch (a product of coal tar distillation) is always mixed with creosote oil, when it is to be burnt in a burner, because

its calorific value is very less.

tar neutralises the residual acids present in pitch.

it reduces viscosity and imparts fluidity for its transportation through pipelines at economic pressure drop.

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

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Which is the main reducing agent during production of iron from iron ore in a blast furnace ?

CO₂

H₂

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The drug used in contraceptives is

sulphadizene

mestranol

methyl salicylate

pencillin

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Raw materials used for producing __________ cement does not contain iron oxide.

waterproof

slag

white

pozzolan

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In the Lurgi coal gasifier

coking coals cannot be used.

low carbon conversion efficiency is achieved.

entrainment of solids is higher.

large quantity of coal can be processed.

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Neon gas is

flammable in nature.

used in color discharge tube.

filled in lamps having tungsten filament.

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