Chemical Process - Chemical Engineering Questions and Answers

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Hydrogenation of edible vegetable oils

is an exothermic reaction.

increases their melting point.

is done in presence of nickel catalyst.

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

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Phenol is mainly used

to produce benzene.

to produce phenol formaldehyde.

to produce polyester resin.

as a plasticiser for unsaturated polyster.

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Main constituent of dolomite is

CaCO₃

MgCO₃

K₂CO₃

Na₂CO₃

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Conversion of CO to CO₂ by steam in presence of a catalyst is called

steam reforming.

shift conversion.

steam gasification.

none of these.

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Refractory bricks having high thermal conductivity is desirable, when it is to be used in the

L.D. converter

blast furnace

rotary kiln

recuperator

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Bromides contained in hot mother liquor is treated with __________ during manufacture of bromine from sea water.

SO₃

Cl₂

NH₃

SO₂

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Plasticisers are added to paints to

make it corrosion resistant.

make glossy surface.

give elasticity & prevent cracking of the film.

increase atmospheric oxidation.

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Resistance to fusion of the refractory under a steady rising temperature condition is called

spalling

refractoriness

both (a) & (b)

neither (a) nor (b)

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Portland cement consists mainly of

CaO & SiO₂

SiO₂ & Al₂O₃

CaO & Al₂O₃

CaO & Fe₂O₃