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4

Catalyst used in the oxidation of benzene to produce Maleic anhydride is

A. V2O5

B. Pt

C. Ni

D. Cr

Correct Answer :

A. V2O5


Related Questions

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4

Use of water having dissolved oxygen in boilers promotes

A. Corrosion

B. Sequestration

C. Scale formation

D. None of these

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4

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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4

Pick out the wrong statement.

A. Azoic dyes are mostly applied on cotton fabrics

B. Basic dyes (e.g. amino derivatives) are applied mostly to paper

C. Mordant dyes are applied mainly to wools

D. None of these

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4

Fatty material used in soap making is

A. Fatty acid

B. Fatty alcohols

C. Tallow

D. Detergents

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4

20% oleum means that in 100 kg oleum, there are 20 kg of

A. SO3 and 80kg of H2SO4

B. H2SO4 and 80kg of SO3

C. SO3 for each 100 kg of H2SO4

D. None of these

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4

Viscosity index improver (like polystyrene or polyisobutylene) is added to lubricant to

A. Reduce its viscosity

B. Increase its viscosity

C. Reduce the variation in its viscosity with temperature

D. Increase the variation in its viscosity with temperature

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4

Calgon used in water treatment is chemically

A. Sodium phosphate

B. Sodium hexametaphosphate

C. Calcium phosphate

D. Tricresyl phosphate

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4

Which is the most efficient absorbent for SO3 out of the following?

A. 20% oleum

B. 65% oleum

C. 78% H2SO4

D. 98% H2SO4

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4

Nitric acid is not used in the manufacture of

A. Detergents

B. Fertilisers

C. Aqua regia

D. Explosives

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4

Portland cement consists mainly of

A. CaO & SiO2

B. SiO2 & Al2O3

C. CaO & Al2O3

D. CaO & Fe2O3

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4

__________ are added in lacquers to remove film brittleness and to improve adhereness.

A. Film forming materials

B. Plasticisers

C. Diluents

D. Solvents

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4

Which of the following is not responsible for causing permanent hardness of water?

A. Ca(HCO3)2

B. CaCl2

C. MgCl2

D. None of these

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4

Commercial production of Vanaspati is done by __________ of edible vegetable oils.

A. Hydrogenation

B. Oxidation

C. Hydrolysis

D. Hydrocracking

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4

Catalytic oxidation of toluene produces

A. Styrene

B. Phenol

C. Benzene

D. Tri-nitro-toluene

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4

Catalyst used during the manufacture of 'Vanaspati Ghee' is

A. Zinc

B. Nickel

C. Platinum

D. Copper

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4

Pick out the wrong statement pertaining to solvent extraction of oil. Rate of extraction

A. Decreases with decrease of thickness of the flakes

B. Increases with the increasing flake size keeping the flake thickness constant

C. Increases considerably with the rise of temperature

D. Decreases as the moisture content of flakes increases

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4

Solvent used for extraction of oil is

A. Hexane

B. Methyl ethyl ketone

C. Furfural

D. None of these

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4

Cement mainly contains

A. CaO, SiO2, Al2O3

B. MgO, SiO2, K2O

C. Al2O3, MgO, Fe2O3

D. CaO, MgO, K2O

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4

Which of the following is the main constituent of the mother liquor produced in salt industry?

A. Quick lime

B. Glauber's salt

C. Salt petre

D. Bromine

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4

Ca(OH)2 is called

A. Quicklime

B. Slaked lime

C. Limestone

D. Gypsum

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4

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

A. Bauxite

B. Limestone

C. Quartz

D. Manganese

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4

Thermoplastic materials

A. Do not soften on application of heat

B. Are heavily branched molecules

C. Are solvent insoluble

D. None of these

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4

Finely ground calcium aluminate & silicate is a/an

A. Cermet

B. Cement

C. Abrasive

D. Explosive

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4

Type of glass used in optical work is the __________ glass.

A. Soda-lime

B. Fibre

C. Lead

D. Borosilicate

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4

Nitrile rubber is produced by the polymerisation of

A. Acrylonitrile and butadiene

B. Acrylonitrile and styrene

C. Isobutylene and isoprene

D. None of these

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4

The combustion reaction, C + O2 = CO2, is

A. Exothermic

B. Endothermic

C. Autocatalytic

D. None of these

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4

Fourdrinier machine is used in the manufacture of

A. Sugar

B. Paper

C. Alcohol from molasses

D. Phenol formaldehyde

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4

__________ is the major constituent of the Portland cement.

A. Calcium carbonate

B. Calcium oxide

C. Tricalcium silicate

D. Calcium sulphate

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4

Phenolic antiseptics are added in the __________ soap.

A. Shaving

B. Medicated

C. Metallic

D. Transparent

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4

In industrial nomenclature, alcohol means

A. Butyl alcohol

B. Propyl alcohol

C. Ethanol

D. Methyl alcohol