Styrene is produced from ethyl benzene by the process of (A) Dehydrogenation (B) Oxidation (C) Alkylation (D) Dehydration

Styrene is produced from ethyl benzene by the process of
(A) Dehydrogenation
(B) Oxidation
(C) Alkylation
(D) Dehydration
by

1 Answer

Answer :

(A) Dehydrogenation
by

Related questions

Styrene is produced from ethyl benzene by the process of (A) Dehydrogenation (B) Oxidation (C) Alkylation (D) Dehydration

Description : Styrene is produced from ethyl benzene by the process of (A) Dehydrogenation (B) Oxidation (C) Alkylation (D) Dehydration

Last Answer : (A) Dehydrogenation

Styrene which is a monomer for the production of polystyrene, is commercially produced by the (A) Catalytic dehydrogenation of ethyl benzene (B) Dehydration of ethyl alcohol followed by hydrogenation (C) Reacting ethylene oxide with acetaldehyde (D) Fermentation of starch

Description : Styrene which is a monomer for the production of polystyrene, is commercially produced by the (A) Catalytic dehydrogenation of ethyl benzene (B) Dehydration of ethyl alcohol followed by hydrogenation (C) Reacting ethylene oxide with acetaldehyde (D) Fermentation of starch

Last Answer : (A) Catalytic dehydrogenation of ethyl benzene

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

Description : 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

Last Answer : (A) Catalytic dehydrogenation of ethyl benzene

__________ is produced by the dehydrogenation of ethyl benzene. (A) Styrene (B) Ethyl alcohol (C) Cumene (D) Phenol

Description : __________ is produced by the dehydrogenation of ethyl benzene. (A) Styrene (B) Ethyl alcohol (C) Cumene (D) Phenol

Last Answer : (A) Styrene

Dehydrogenation of ethyl benzene produces (A) Styrene (B) Naphthalene (C) Phenol (D) Benzoic acid

Description : Dehydrogenation of ethyl benzene produces (A) Styrene (B) Naphthalene (C) Phenol (D) Benzoic acid

Last Answer : (A) Styrene

Phthalic anhydride is made by the (A) Oxidation of naphthalene (B) Oxidation of benzene (C) Dehydrogenation of ethyl benzene (D) None of these

Description : Phthalic anhydride is made by the (A) Oxidation of naphthalene (B) Oxidation of benzene (C) Dehydrogenation of ethyl benzene (D) None of these

Last Answer : (A) Oxidation of naphthalene

Acetone is produced by catalytic dehydrogenation of (A) Phenol (B) Naphthalene (C) Isopropanol (D) Ethyl benzene

Description : Acetone is produced by catalytic dehydrogenation of (A) Phenol (B) Naphthalene (C) Isopropanol (D) Ethyl benzene

Last Answer : (C) Isopropanol

The process used for the manufacture of ethyl alcohol from molasses is (A) Distillation (B) Dehydration (C) Dehydrogenation (D) None of these

Description : The process used for the manufacture of ethyl alcohol from molasses is (A) Distillation (B) Dehydration (C) Dehydrogenation (D) None of these

Last Answer : (D) None of these

Cumene (isopropyl benzene) is made by (A) Oxidation of naphthalene (B) Propylene alkylation of benzene (C) Polymerisation of a mixture of benzene & propylene (D) None of these

Description : Cumene (isopropyl benzene) is made by (A) Oxidation of naphthalene (B) Propylene alkylation of benzene (C) Polymerisation of a mixture of benzene & propylene (D) None of these

Last Answer : (B) Propylene alkylation of benzene

Maleic anhydride is produced by catalytic oxidation of (A) Toluene (B) Ethyl alcohol (C) Naphthalene (D) Benzene

Description : Maleic anhydride is produced by catalytic oxidation of (A) Toluene (B) Ethyl alcohol (C) Naphthalene (D) Benzene

Last Answer : (D) Benzene

Isopropyl benzene produced by alkylation of benzene with propylene is known as (A) Neoprene (B) Cumene (C) Gelatin (D) Mercaptans

Description : Isopropyl benzene produced by alkylation of benzene with propylene is known as (A) Neoprene (B) Cumene (C) Gelatin (D) Mercaptans

Last Answer : (B) Cumene

Catalytic oxidation of toluene produces (A) Styrene (B) Phenol (C) Benzene (D) Tri-nitro-toluene

Description : Catalytic oxidation of toluene produces (A) Styrene (B) Phenol (C) Benzene (D) Tri-nitro-toluene

Last Answer : (B) Phenol

Which one of the following processes aims at producing higher yield of gaseous unsaturated hydrocarbons and aromatics like benzene & toluene? (A) Reforming (B) Pyrolysis (C) Alkylation (D) Hydrocracking

Description : Which one of the following processes aims at producing higher yield of gaseous unsaturated hydrocarbons and aromatics like benzene & toluene? (A) Reforming (B) Pyrolysis (C) Alkylation (D) Hydrocracking

Last Answer : (A) Reforming

Pick out the wrong statement. (A) For the manufacture of styrene, the major raw materials are benzene and ethylene (B) One important copolymer of styrene is SBR, which is widely used in the manufacture of automobile tyres (C) Manufacture of phenol by chloroben-zene-eaustic process involves. The chlorination of benzene, causticisation and hydrolysis (D) Phenol manufacture by chlorobenzene-caustic process is competitive even when low cost chlorine is not available

Description : Pick out the wrong statement. (A) For the manufacture of styrene, the major raw materials are benzene and ethylene (B) One important copolymer of styrene is SBR, which is widely ... D) Phenol manufacture by chlorobenzene-caustic process is competitive even when low cost chlorine is not available

Last Answer : (D) Phenol manufacture by chlorobenzene-caustic process is competitive even when low cost chlorine is not available

Sulphuric acid is used as a catalyst in the (A) Hydrogenation of oils (B) Gas phase oxidation of SO2 in chamber process (C) Alkylation of hydrocarbons(D) None of these

Description : Sulphuric acid is used as a catalyst in the (A) Hydrogenation of oils (B) Gas phase oxidation of SO2 in chamber process (C) Alkylation of hydrocarbons (D) None of these

Last Answer : (C) Alkylation of hydrocarbons

Ethanol amine is produced using ammonia and (A) Ethyl benzene (B) Ethylene oxide (C) Ethanol (D) Ethane

Description : Ethanol amine is produced using ammonia and (A) Ethyl benzene (B) Ethylene oxide (C) Ethanol (D) Ethane

Last Answer : (B) Ethylene oxide

Pick out the wrong statement. (A) Alkylation produces a larger iso-paraffin (having higher octane number) from the reaction of an olefin with smaller iso-paraffin (B) Catalytic alkylation processes use HF, AlCl3 & H2SO4 as Catalysts (C) All the alkylation processes use very high temperature (> 1000°C) (D) Gasoline having an octane number of 90 can be produced by alkylation process

Description : Pick out the wrong statement. (A) Alkylation produces a larger iso-paraffin (having higher octane number) from the reaction of an olefin with smaller iso-paraffin (B) Catalytic alkylation processes use HF ... (> 1000°C) (D) Gasoline having an octane number of 90 can be produced by alkylation process

Last Answer : (C) All the alkylation processes use very high temperature (> 1000°C)

Aniline is prepared by (a) the reaction of benzene with ammonia (b) the reduction of nitrobenzene with Sn/HCl (c) the dehydrogenation of nitrobenzene (d) the reaction of nitrobenzene with I2/NaOH

Description : Aniline is prepared by (a) the reaction of benzene with ammonia (b) the reduction of nitrobenzene with Sn/HCl (c) the dehydrogenation of nitrobenzene (d) the reaction of nitrobenzene with I2/NaOH

Last Answer : the reduction of nitrobenzene with Sn/HCl

Starting material for the production of styrene butadiene rubber (SBR) is (A) Ethyl alcohol (B) Ethylene (C) Both (A) & (B) (D) Neither (A) nor (B)

Description : Starting material for the production of styrene butadiene rubber (SBR) is (A) Ethyl alcohol (B) Ethylene (C) Both (A) & (B) (D) Neither (A) nor (B)

Last Answer : (C) Both (A) & (B)

Gobar gas is produced by the __________ of 'gobar' (cow dung). (A) Hydrolysis (B) Fermentation (C) Oxidation (D) Dehydration

Description : Gobar gas is produced by the __________ of 'gobar' (cow dung). (A) Hydrolysis (B) Fermentation (C) Oxidation (D) Dehydration

Last Answer : (B) Fermentation

Gum formation in stored gasoline is mainly due to the (A) Alkylation of unsaturated (B) Presence of sulphur (C) Oxidation & polymerisation of unsaturated (D) Higher aromatic content

Description : Gum formation in stored gasoline is mainly due to the (A) Alkylation of unsaturated (B) Presence of sulphur (C) Oxidation & polymerisation of unsaturated (D) Higher aromatic content

Last Answer : (B) Presence of sulphur

Catalytic oxidation-dehydrogenation of methyl alcohol produces (A) Formaldehyde (B) Phenol (C) Acetone (D) Maleic anhydride

Description : Catalytic oxidation-dehydrogenation of methyl alcohol produces (A) Formaldehyde (B) Phenol (C) Acetone (D) Maleic anhydride

Last Answer : (A) Formaldehyde

Phthalic anhydride is produced by the oxidation of (A) Naphthalene (B) Benzene (C) Toluene(D) Aniline

Description : Phthalic anhydride is produced by the oxidation of (A) Naphthalene (B) Benzene (C) Toluene (D) Aniline

Last Answer : (B) Benzene

Pick out the wrong statement. (A) Critical moisture content is not a property of the material itself (B) A sharp increase in pressure drop gives an indication of the flooding in a distillation column (C) Separation of components is not possible in liquid extraction, if selectivity is unity (D) Dehydration of ethyl alcohol is most economically done by molecular distillation at very high vacuum

Description : Pick out the wrong statement. (A) Critical moisture content is not a property of the material itself (B) A sharp increase in pressure drop gives an indication of the flooding in a ... unity (D) Dehydration of ethyl alcohol is most economically done by molecular distillation at very high vacuum

Last Answer : (D) Dehydration of ethyl alcohol is most economically done by molecular distillation at very high vacuum

The biochemical treatment applied to sewage effluents is a process of (A) Dehydration (B) Reduction (C) Oxidation (D) Polymerisation

Description : The biochemical treatment applied to sewage effluents is a process of (A) Dehydration (B) Reduction (C) Oxidation (D) Polymerisation

Last Answer : (C) Oxidation

Malic enzyme convers malic acid, in the presence of NADP+ to Pyruvic acid. This reaction is a/an (A) Decarboxylation (B) Decarboxylation and Dehydrogenation (C) Dehydrogenation (D) Oxidation

Description : Malic enzyme convers malic acid, in the presence of NADP+ to Pyruvic acid. This reaction is a/an (A) Decarboxylation (B) Decarboxylation and Dehydrogenation (C) Dehydrogenation (D) Oxidation

Last Answer : Answer : B

Pantothenic acid is a constituent of coenzyme involved in (A) Acetylation (B) Decarboxylation (C) Dehydrogenation (D) Oxidation

Description : Pantothenic acid is a constituent of coenzyme involved in (A) Acetylation (B) Decarboxylation (C) Dehydrogenation (D) Oxidation

Last Answer : Answer : A

Pantothenic acid is a constituent of the coenzyme involved in (A) Decarboxylation (B) Dehydrogenation (C) Acetylation (D) Oxidation

Description : Pantothenic acid is a constituent of the coenzyme involved in (A) Decarboxylation (B) Dehydrogenation (C) Acetylation (D) Oxidation

Last Answer : Answer : C

Pantothenic acid is a constituent of the coenzyme involved in (A) Decarboxylation (B) Dehydrogenation (C) Acetylation (D) Oxidation

Description : Pantothenic acid is a constituent of the coenzyme involved in (A) Decarboxylation (B) Dehydrogenation (C) Acetylation (D) Oxidation

Last Answer : (C) Acetylation

Catalytic oxidation of naphthalene produces (A) Styrene (B) Phenol (C) Phthalic anhydride (D) None of these

Description : Catalytic oxidation of naphthalene produces (A) Styrene (B) Phenol (C) Phthalic anhydride (D) None of these

Last Answer : (C) Phthalic anhydride

Styrene-butadiene-rubber (SBR) as compared to natural rubber has (A) Poorer tensile strength (B) Poorer resistance to oxidation (C) Greater amount of heat build-up under heavy loading (D) All (A), (B) and (C)

Description : Styrene-butadiene-rubber (SBR) as compared to natural rubber has (A) Poorer tensile strength (B) Poorer resistance to oxidation (C) Greater amount of heat build-up under heavy loading (D) All (A), (B) and (C)

Last Answer : (D) All (A), (B) and (C)

Commercially ethylene is produced from naphtha by (A) Catalytic cracking (B) Catalytic dehydrogenation (C) Pyrolysis (D) Hydrocracking

Description : Commercially ethylene is produced from naphtha by (A) Catalytic cracking (B) Catalytic dehydrogenation (C) Pyrolysis (D) Hydrocracking

Last Answer : (D) Hydrocracking

The starting material used for the manufacture of caprolactam is (A) Ethyl benzene (B) Cyclohexane (C) Ethylene glycol (D) DMT

Description : The starting material used for the manufacture of caprolactam is (A) Ethyl benzene (B) Cyclohexane (C) Ethylene glycol (D) DMT

Last Answer : (B) Cyclohexane

Pick out the system with minimum boiling azeotrope at 1 atm. (A) Benzene-toluene (B) Ethyl alcohol-water (C) Hydrochloric acid-water (D) All (A), (B) and (C)

Description : Pick out the system with minimum boiling azeotrope at 1 atm. (A) Benzene-toluene (B) Ethyl alcohol-water (C) Hydrochloric acid-water (D) All (A), (B) and (C)

Last Answer : (B) Ethyl alcohol-water

Pick out the wrong statement. (A) DDT is manufactured by the condensation of chlorobenzene with chloral at 30°C in presence of oleum, which is a highly exothermic reaction (B) Chloral is obtained by the chlorination of ethyl alcohol (C) Insecticides acting on the insects through the respiratory system are called fumigants (D) Benzene hexachloride is not a contact insecticide

Description : Pick out the wrong statement. (A) DDT is manufactured by the condensation of chlorobenzene with chloral at 30°C in presence of oleum, which is a highly exothermic reaction (B) Chloral ... through the respiratory system are called fumigants (D) Benzene hexachloride is not a contact insecticide

Last Answer : (D) Benzene hexachloride is not a contact insecticide

The process of elimination of water from any system is called (a) Oxidation (b) Reduction (c) Dehydration (d) Evaporation

Description : The process of elimination of water from any system is called (a) Oxidation (b) Reduction (c) Dehydration (d) Evaporation

Last Answer : Ans:(c)

Setting of plaster of paris involves – (1) dehydration process (2) hydration to form other hydrates (3) oxidation process (4) reduction process

Description : Setting of plaster of paris involves – (1) dehydration process (2) hydration to form other hydrates (3) oxidation process (4) reduction process

Last Answer : (2) hydration to form other hydrates Explanation: The setting of plaster of Paris takes place by hydration due to the formation of a solid crystalline hydrate and hardening of Plaster of Paris is ... . A slight expansion takes place in the process and heat is evolved. This process is exothermic.

Setting of plaster of paris involves (1) dehydration process (2) hydration to form other hydrates (3) oxidation process (4) reduction process

Description : Setting of plaster of paris involves (1) dehydration process (2) hydration to form other hydrates (3) oxidation process (4) reduction process

Last Answer : hydration to form other hydrates

In petroleum refining, the process used for conversion of hydrocarbons to aromatics is (A) Catalytic cracking (B) Catalytic reforming (C) Hydrotreating (D) Alkylation

Description : In petroleum refining, the process used for conversion of hydrocarbons to aromatics is (A) Catalytic cracking (B) Catalytic reforming (C) Hydrotreating (D) Alkylation

Last Answer : (B) Catalytic reforming

Catalyst used in alkylation process is (A) Sulphuric acid (B) Nickel (C) Silica gel (D) Alumina

Description : Catalyst used in alkylation process is (A) Sulphuric acid (B) Nickel (C) Silica gel (D) Alumina

Last Answer : (A) Sulphuric acid

Atmospheric corrosion of metals result from their (A) Slow oxidation (B) Fast oxidation (C) Fast hydration (D) Slow dehydration

Description : Atmospheric corrosion of metals result from their (A) Slow oxidation (B) Fast oxidation (C) Fast hydration (D) Slow dehydration

Last Answer : (A) Slow oxidation

Which of the following processes is involved in the biochemical treatment of sewage effluents? (A) Oxidation (B) Reduction (C) Dehydration (D) Fermentation

Description : Which of the following processes is involved in the biochemical treatment of sewage effluents? (A) Oxidation (B) Reduction (C) Dehydration (D) Fermentation

Last Answer : (A) Oxidation

Nitrile rubber is produced by the polymerisation of (A) Acrylonitrile & butadiene (B) Acrylonitrile & styrene (C) Isobutylene & isoprene (D) None of these

Description : Nitrile rubber is produced by the polymerisation of (A) Acrylonitrile & butadiene (B) Acrylonitrile & styrene (C) Isobutylene & isoprene (D) None of these

Last Answer : (A) Acrylonitrile & butadiene

SBR is produced by the copolymerisation of butadiene & styrene by employing emulsion polymerisation. The weight ratio of styrene and butadiene is maintained at (A) 1: 3 (B) 3 : 1 (C) 1 : 2 (D) 2 : 1

Description : SBR is produced by the copolymerisation of butadiene & styrene by employing emulsion polymerisation. The weight ratio of styrene and butadiene is maintained at (A) 1: 3 (B) 3 : 1 (C) 1 : 2 (D) 2 : 1

Last Answer : (A) 1: 3

Acrylonitrile-butadiene-styrene (ABS) copolymer, which is produced by blending styrene-acrylonitrile copolymer with butadiene based elastomer, is a/an (A) Rigid foam (B) Engineering plastic (C) Thermosetting polymer

Description : Acrylonitrile-butadiene-styrene (ABS) copolymer, which is produced by blending styrene-acrylonitrile copolymer with butadiene based elastomer, is a/an (A) Rigid foam (B) Engineering plastic (C) Thermosetting polymer

Last Answer : (B) Engineering plastic

Nitrile rubber is produced by the polymerisation of (A) Acrylonitrile and butadiene (B) Acrylonitrile and styrene (C) Isobutylene and isoprene (D) None of these

Description : Nitrile rubber is produced by the polymerisation of (A) Acrylonitrile and butadiene (B) Acrylonitrile and styrene (C) Isobutylene and isoprene (D) None of these

Last Answer : (A) Acrylonitrile and butadiene

Lecithins are soluble in ordinary solvents except (A) Benzene (B) Ethyl alcohol (C) Methyl alcohol (D) Acetone

Description : Lecithins are soluble in ordinary solvents except (A) Benzene (B) Ethyl alcohol (C) Methyl alcohol (D) Acetone

Last Answer : Answer : D

Which of the reactions between the following pairs of reagents proceeds by a mechanism that may be described as an electrophilic substitution? (a) Benzene + Br2/FeBr3 (b) Propene + Br2 (c) Acetone + NH2NH2 (d) Ethyl bromide + aq KOH

Description : Which of the reactions between the following pairs of reagents proceeds by a mechanism that may be described as an electrophilic substitution? (a) Benzene + Br2/FeBr3 (b) Propene + Br2 (c) Acetone + NH2NH2 (d) Ethyl bromide + aq KOH

Last Answer : Benzene + Br2/FeBr3

Which of the following statements are false about benzene? (a) It is a planar molecule with bond angles 120°(b) It is immiscible with water forming the lower layer. (c) It can be converted into cyclohexane by hydrogenation at 200°C in the presence of Ni catalyst. (d) It reacts with ethyl chloride in the presence of aluminium chloride to form ethylbenzene..

Description : Which of the following statements are false about benzene? (a) It is a planar molecule with bond angles 120°. (b) It is immiscible with water forming the lower layer. (c) It can be ... Ni catalyst. (d) It reacts with ethyl chloride in the presence of aluminium chloride to form ethylbenzene.

Last Answer : It is immiscible with water forming the lower layer

Pick out the wrong statement. (A) Lower boiling paraffins have higher octane number than higher paraffins (B) Dehydrogenation of naphthenes to aromatics is a desirable reaction in reforming process (C) The most ideal feedstock for thermal reforming is dearomatised kerosene (D) Catalyst used in catalytic reforming is platinum on silica-alumina base

Description : Pick out the wrong statement. (A) Lower boiling paraffins have higher octane number than higher paraffins (B) Dehydrogenation of naphthenes to aromatics is a desirable reaction in reforming ... is dearomatised kerosene (D) Catalyst used in catalytic reforming is platinum on silica-alumina base

Last Answer : (C) The most ideal feedstock for thermal reforming is dearomatised kerosene