Online Chemical Engineering Test - Chemical Process Test 2

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Total number of questions: 20.
Time allotted: 30 minutes.
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Gelatine which is a nitrogenous organic protein is obtained by the hydrolysis of

callagen

tannin

molasses

carbohydrate

[#]

Catalyst used in the manufacture of sulphuric acid by chamber & contact processes are respectively

V₂O₅ & Cr₂O₃.

oxides of nitrogen & Cr₂O₃.

V₂O₅ on a porous carrier & oxides of nitrogen.

oxides of nitrogen & V₂O₅ on a porous carrier.

[#]

Fermentation of molasses to produce ethyl alcohol is done at __________ °C

20 - 30

< - 5

100 - 150

250 - 300

[#]

DDT stands for

diethyl-diphenyl-trichloromethane.

dichloro-diphenyl-trichloromethane.

diphenyl-dichloro-trichloromethane.

dichloro-diphenyl-trichloroethane.

[#]

The amount of benzene present in pure benzol is about __________ percent.

[#]

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

spalling

refractoriness

both (a) & (b)

neither (a) nor (b)

[#]

Which of the following paper does not require a filler during manufacture ?

Bond paper

Writing paper

Blotting paper

Coloured paper

[#]

Starting material for the production of styrene butadiene rubber (SBR) is

ethyl alcohol

ethylene

both (a) & (b)

neither (a) nor (b)

[#]

Calcination of gypsum produces

plaster of paris

salt cake

nitre cake

lime

[#]

10.

Main use of liquid nitrogen is in

rocket propulsion.

making gun powder.

detergent manufacture.

refrigerative cooling.

[#]

11.

Nylon 6-6 is manufactured from

hexamethylene diamine and adipic acid.

hexamethylene diamine and maleic anhydride.

caprolactum.

dimethyl terephthalate and ethylene glycol.

[#]

12.

__________ is used as a flux in the extraction of iron from iron ore (hametite) in blast furnace.

Bauxite

Limestone

Quartz

Manganese

[#]

13.

The most economical pulp for the production of newsprint would be the __________ pulp.

groundwood

sulphate

sulphite

semichemical

[#]

14.

Poly Vinyl Chloride (P.V.C.) is a __________ material.

thermosetting

thermoplastic

fibrous

chemically active

[#]

15.

Main product in calcium carbide-water reaction is

Ca(OH)₂

C₂H₂

CO₂

CaCO₃

[#]

16.

Pig iron is produced by blast furnaces in India using mostly the iron ore named

hematite

magnetite

siderite

chalcopyrite

[#]

17.

Commercially ethylene is produced from naphtha by

catalytic cracking.

catalytic dehydrogenation.

pyrolysis.

hydrocracking.

[#]

18.

The process involved in converting rubber into a thin sheet or coating it on fabric is called

extrusion

mastication

calendering

valcanisation

[#]

19.

High purity nitrogen is used in

making protective gas (95% N₂ + 5% H₂) for annealing of cold rolled steel strip coils.

fire fighting purposes.

both (a) & (b).

neither (a) nor (b).

[#]

20.

One of the steps during refining of cane sugar consists of addition of hydrated lime to the sugar syrup followed by carbonation of the resulting solution. The purpose of this step is to

adjust the pH of the syrup.

remove the coloring matter from the syrup.

reduce the viscosity of the syrup.

improve the rate of crystallisation of sugar.

[#]

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