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4

Dehydrogenation of ethyl benzene produces

A. Styrene

B. Naphthalene

C. Phenol

D. Benzoic acid

Correct Answer :

A. Styrene


Related Questions

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4

High magnesia lime is added to hot sugar cane juice (during the manufacture of sugar) to

A. Flocculate the impurities

B. Facilitate fast filtration

C. Both (A) and (B)

D. Neither (A) nor (B)

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4

Anion exchanger is regenerated usually with

A. NaOH

B. H2SO4

C. Hydrazine

D. Alum solution

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4

Pick out the exothermic reaction out of the following:

A. C + H2O = CO + H2

B. CaC2 + H2O = Ca(OH)2 + C2H2

C. MgCO3 = MgO + CO2

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

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4

Synthesis gas is a mixture of

A. CO and H2

B. N2 and H2

C. H2, CH4 and CO

D. CO2 and H2

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4

Epoxy resin

A. Is a good adhesive

B. Is an elastomer

C. Cannot be used for surface coatings

D. Is a polyester

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Consider the production of ammonia from methene and air as raw materials. The catalysts used are:
(i) __________ for steam reforming of methane and
(ii) __________ for ammonia synthesis.

A. (i) - Ni/Al2O3; (ii) - Cu - ZnO/Al2O3

B. (i) - Fe/Al2O3; (ii) - Cu - ZnO/Al2O3

C. (i) - Ni/Al2O3; (ii) - Fe/Al2O3

D. (i) - Fe/Al2O3; (ii) - Ni/Al2O3

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__________ is produced by the dehydrogenation of ethyl benzene.

A. Styrene

B. Ethyl alcohol

C. Cumene

D. Phenol

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4

Massecuite is

A. Used for paper making

B. Used as a cattle feed

C. Highly acidic in nature

D. None of these

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4

Nylon-66 is manufactured from

A. Hexamethylene diamine and adipic acid

B. Hexamethylene diamine and Maleic anhydride

C. Caprolactam

D. Dimethyl terephthalate and ethylene glycol

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4

Glycerine is a by-product of the __________ industry.

A. Soap

B. Detergent

C. Oil hydrogenation

D. Paint

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Common salt is generally not produced commonly by __________ method from brine.

A. Freeze drying

B. Electrolytic

C. Solar evaporation

D. Vacuum evaporation

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4

Carbon tetrachloride (CCl4) is the starting raw material for the manufacture of

A. Trichloroethylene

B. Perchloroethylene

C. Parathion

D. Methanol

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Zeigler process

A. Produces high density polyethylene

B. Produces low density polyethylene

C. Uses no catalyst

D. Employs very high pressure

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Finely ground calcium aluminate & silicate is a/an

A. Cermet

B. Cement

C. Abrasive

D. Explosive

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DDT should not be allowed to come in contact with iron (during its manufacture) to

A. Avoid its decomposition

B. Prevent sulphonation of the monochlorobenzene by the acid catalyst

C. Achieve non-hygroscopic property

D. None of these

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The manufacture of Kraft pulp is done by a/an __________ process.

A. Alkaline

B. Acidic

C. Neutral

D. None of these

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4

Concentration of NaOH solution produced by mercury electrolytic cell is about __________ percent.

A. 10

B. 25

C. 50

D. 98

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4

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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4

Temperature during hydrogenation of oil should not be more than 200°C, otherwise it will result in

A. Pyrolysis of oil

B. Sintering of porous catalyst

C. Hydrogen embrittlement

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

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4

Higher viscosity index of a lubricating oil denotes

A. Less changes in fluidity of oil with temperature

B. Substantially high change in fluidity of oil with temperature

C. Its unsuitability under varying temperature conditions

D. None of these

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4

Naphthols are derivates of

A. Methyl amine

B. Naphthalene

C. Phenol

D. Xylene

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In the Solvay process, the product from the calciner is

A. Light soda ash

B. Dense soda ash

C. Sodium bicarbonate

D. Dehydrated soda ash

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4

An oil is converted into fat by its

A. Hydrogenation

B. Hydrolysis

C. Hydrocracking

D. Hydration

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4

Free alkali in a toilet soap is __________ that in a laundry shop.

A. Less than

B. More than

C. Same

D. None of these

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90% of the caprolactam is converted to nylon-6 on its condensation polymerisation in the reactor maintained at __________ °C.

A. < 0

B. 10-30

C. 250-280

D. 500-600

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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

Pick out the wrong statement.

A. Pasteurisation of milk involves moderate heating followed by cooling

B. Bakeries and breweries make use of yeasts

C. Enzyme is a complex nitrogenous compound

D. Oils and fats are alkaloids

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4

Phenol formaldehyde is produced by condensation polymerisation. It is also known as

A. Teflon

B. Bakelite

C. Polyester

D. Nylon-66

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Brackish water which contains mostly dissolved salt, can be purified by the __________ process.

A. Reverse osmosis

B. Sand filter

C. Lime soda

D. Permutit

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Setting of plaster of Paris is accompanied with

A. Hydration

B. Dehydration

C. Hydrolysis

D. Loss of CO2