Oxidation of ortho-xylene in presence of __________ catalyst is done to produce phthalic anhydride on commercial scale.

Question

Oxidation of ortho-xylene in presence of __________ catalyst is done to produce phthalic anhydride on commercial scale.

A. Nickel

B. Vanadium

C. Alumina

D. Iron

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Sulphur addition in soap is done to

A. Improve the soap texture

B. Cure pimples & dandruff

C. Fasten lather formation

D. Increase its cleansing action

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Basic oxide is absent in __________ glass.

A. Flint

B. Pyrex

C. Quartz

D. All (A), (B) & (C)

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Sugar content in sugarcane on cane basis is about __________ percent by weight.

A. 1 to 5

B. 5 to 10

C. 15 to 20

D. 20 to 30

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Mannheim furnace is used in the manufacture of

A. Hydrochloric acid

B. H₂SO₄ by Chamber process

C. Calcium carbide

D. Corundum

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

A. Steam reforming

B. Shift conversion

C. Steam gasification

D. None of these

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Most easily and cheaply available fibrous raw material for paper manufacture available in India is bamboo. The yield of pulp produced from fibrous raw material by mechanical process is about __________ percent.

A. 75

B. < 10

C. > 30

D. 50

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Stereospecific agents are exemplified by

A. Radiation

B. Supported metal oxide catalysts

C. Ziegler catalysts

D. All (A), (B) & (C)

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Wet chlorine gas produced during electrolysis of brine is dehydrated by

A. Spraying 66° Be H2SO4 counter current to the flow of the gas

B. Passing it through a bed of diatomaceous earth

C. Passing it through a bed of silica gel

D. None of these

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Silicone is a/an

A. Thermoplastic

B. Inorganic polymer

C. Monomer

D. None of these

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Styrene (a monomer for the production of polystyrene) is commercially produced by

A. Catalytic dehydrogenation of ethyl benzene

B. Dehydration of ethyl alcohol followed by hydrogenation

C. Reacting ethylene oxide with acetaldehyde

D. Fermentation of starch

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Polymethyl methacrylate (PMMA) is known as

A. Bakelite

B. Teflon

C. Perspex

D. Nylon-6

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Function of thinner in a paint is to

A. Accelerate the oxidation of oil

B. Prevent gelling of the paint

C. Suspend pigments & dissolve film forming materials

D. Form a protective film

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Which of the following is an additional step in the manufacture of paper from bagasse as compared to that from bamboo?

A. Depithing

B. Digestion

C. Bleaching

D. None of these

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Fat dispersed in water is exemplified by

A. Colloids

B. Gel

C. Butter

D. Emulsion

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Anion exchanger is regenerated usually with

A. NaOH

B. H2SO4

C. Hydrazine

D. Alum solution

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

A. SO₃

B. Cl₂

C. NH₃

D. SO₂

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Commercial production of calcium carbide requires limestone and __________ as raw materials.

A. Coke

B. Sand

C. Soda ash

D. Fuel oil

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Main constituents of Portland cement are calcium aluminate and

A. Gypsum

B. Silicates

C. Sodium silicate

D. Carbonates

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Chemical formula of 'salt cake' is

A. Na₂SO₄

B. CaSO₄

C. MgSO₄

D. BaSO₄

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10% oleum comprises of 10% free

A. SO₂

B. H₂SO₃

C. SO₃

D. H₂SO₄

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Acrylonitrile is mainly used in the __________ industry.

A. Polymer

B. Printing

C. Dyeing

D. Photographic

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Nylon-66 is so named because the

A. Average degree of polymerisation of the polymer is 1966

B. Number of carbon atoms between two nitrogen atoms are 6

C. Number of nitrogen atoms between two carbon atoms are 6

D. Polymer was first synthesised in 1966

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High temperature carbonisation of coal produces

A. Inferior coke compared to low temperature carbonisation

B. Less of gases compared to liquid products

C. Larger quantity of tar compared to low temperature carbonisation

D. None of these

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__________ is a thermosetting plastic.

A. Polythene

B. Epoxy polymer

C. P.V.C.

D. Polystyrene

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__________ are used as corrosion inhibitor for iron & steel in aqueous solutions.

A. Phosphates

B. Chromates

C. Sulphates

D. Bi-carbonates

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Cellulose content of bamboo and ideal fibrous raw material for the manufacture of paper is __________ percent.

A. 10

B. 50

C. 80

D. 95

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

A. L.D. converter

B. Blast furnace

C. Rotary kiln

D. Recuperator

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

A. Sedimentation

B. Coagulation

C. Disinfection

D. Softening

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Trinitrotoluene (TNT), an explosive, is made by the nitration of

A. Nitrobenzene

B. Toluene

C. Nitrotoluene

D. Benzene

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Nitro-glycerine absorbed in wood flour, sodium nitrate or ammonium nitrate is commercially used as controlled explosive called dynamite. The raw material used for its manufacture are glycerine, nitric acid and

A. Sulphuric acid

B. Phosphoric acid

C. Hydrochloric acid

D. Hydrofluoric acid

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Accepted Answer

B. Vanadium

Oxidation of ortho-xylene in presence of __________ catalyst is done to produce phthalic anhydride on commercial scale.

Correct Answer :

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Related Questions

Sulphur addition in soap is done to

Basic oxide is absent in __________ glass.

Sugar content in sugarcane on cane basis is about __________ percent by weight.

Mannheim furnace is used in the manufacture of

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

Most easily and cheaply available fibrous raw material for paper manufacture available in India is bamboo. The yield of pulp produced from fibrous raw material by mechanical process is about __________ percent.

Stereospecific agents are exemplified by

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Which of the following is an additional step in the manufacture of paper from bagasse as compared to that from bamboo?

Fat dispersed in water is exemplified by

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Chemical formula of 'salt cake' is

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Acrylonitrile is mainly used in the __________ industry.

Nylon-66 is so named because the

High temperature carbonisation of coal produces

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Cellulose content of bamboo and ideal fibrous raw material for the manufacture of paper is __________ percent.

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

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

Trinitrotoluene (TNT), an explosive, is made by the nitration of

Nitro-glycerine absorbed in wood flour, sodium nitrate or ammonium nitrate is commercially used as controlled explosive called dynamite. The raw material used for its manufacture are glycerine, nitric acid and

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