Air used in aerobic fermentation must be sterilized, otherwise the

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Air used in aerobic fermentation must be sterilized, otherwise the

A. Recovery of product will be difficult

B. Contamination of pure culture would result

C. Uniformity of product cannot be achieved

D. None of these

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Glauber's salt is chemically represented by

A. Na₂SO₄.10H₂O

B. CaCl(OCl)

C. CaSO₄.H₂O

D. (NH₄)₂SO₄

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Double Contact Double Absorption (DCDA) process is the most recent process for the manufacture of

A. Nitric acid

B. Sulphuric acid

C. Ammonium sulphate

D. Hydrochloric acid

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The catalyst used in the manufacture of DDT (from chloral and chlorobenzene) is

A. Dilute H₂SO₄

B. Oleum

C. Ultraviolet light

D. None of these

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CaSO4 . ½H₂O is known as

A. Blue vitriol

B. Plaster of Paris

C. Gypsum

D. Zeolite

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Dacron (or Terylene) fibres as compared to nylon fibres have

A. Better heat & acid resistant properties

B. Poorer resistance to alkalis

C. Poorer dyeability

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

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Kaolin is a/an

A. Refractory material

B. Synthetic resin

C. Artificial abrasive

D. Blue pigment

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Hydrazine (N₂H₄) is used mainly as a/an

A. Explosive

B. Rocket fuel

C. Detergents additive

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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Reaction of an alcohol with organic acid is called the __________ reaction.

A. Saponification

B. Esterification

C. Neutralisation

D. Acidification

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Cement mainly contains

A. CaO, SiO₂, Al₂O₃

B. MgO, SiO₂, K₂O

C. Al₂O₃, MgO, Fe₂O₃

D. CaO, MgO, K₂O

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Detergent is produced by the sulphonation of dodecyl benzene, which is an __________ reaction.

A. Endothermic

B. Exothermic

C. Irreversible

D. Both (B) and (C)

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Finely ground calcium aluminate & silicate is a/an

A. Cermet

B. Cement

C. Abrasive

D. Explosive

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Wax is a

A. Mixture of glycerides

B. Mixture of esters of polyhydric alcohols excepting glycerine

C. Liquid at room temperature

D. Mixture of glycerides of fatty acids

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The major use of butadiene is

A. As a plasticiser for unsaturated polyester

B. In the manufacture of synthetic rubber

C. As an anti-skinning agent in paint

D. None of these

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Mercury electrolytic cells are preferred over diaphragm electrolytic cell (for production of caustic soda), as it

A. Has larger production capacity per unit cell

B. Consumes less power per ton of Cl2 produced

C. Produces high purity (70%) caustic soda directly

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

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CaCl(OCl) is the chemical formula of

A. Hypo

B. Bleaching powder

C. Plaster of Paris

D. Aqua regia

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Which of the following is a bleaching agent added in the detergents to facilitate removal of stains caused due to blood, tea etc?

A. Sodium silicate

B. Sodium borate

C. Sodium tripolyphosphate (STPP)

D. Caustic soda

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Pick out the wrong statement.

A. Cold rubber (SBR) is superior as compared to hot rubber (SBR)

B. Polymerisation temperature can modify the properties of SBR

C. Production of cold SBR employs lower pressure as compared to that of hot SBR

D. None of these

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__________ is produced using molasses as the starting raw material.

A. Methyl alcohol

B. Ethyl alcohol

C. Benzol

D. Dimethyl ether

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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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White phosphorous is stored under water, because

A. It does not react with water

B. It is poisonous

C. Its kindling temperature in dry air is very low

D. It is unstable

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Fermentation is adversely affected by the

A. Presence of air

B. Absence of air

C. High concentration

D. Presence of ammonium salts

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Sodium chloride content in sea water is about __________ gms/litre.

A. 2

B. 10

C. 25

D. 50

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__________ of quicklime produces slaked lime.

A. Hydration

B. Dehydration

C. Hydrogenation

D. None of these

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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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Sodium bisulphite is used for __________ water.

A. Deaeration

B. Dechlorination

C. Both (A) & (B)

D. Neither (A) nor (B)

Discuss this answer

Phthalic anhydride is used

A. In making PVC

B. As plasticisers

C. In insecticides manufacture

D. For making nylon-6

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Main constituent of dolomite is

A. CaCO₃

B. MgCO₃

C. K₂CO₃

D. Na₂CO₃

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Bordeaux mixture is a/an

A. Fertiliser

B. Inorganic fungicide

C. Insecticide

D. Explosive

Discuss this answer

Hydrochloric acid is also known as

A. Oil of vitriol

B. Muriatic acid

C. Strong organic acid

D. Green acid

Discuss this answer

Accepted Answer

B. Contamination of pure culture would result

Air used in aerobic fermentation must be sterilized, otherwise the

Correct Answer :

Show all Chemical Process MCQ

Related Questions

Glauber's salt is chemically represented by

Double Contact Double Absorption (DCDA) process is the most recent process for the manufacture of

The catalyst used in the manufacture of DDT (from chloral and chlorobenzene) is

CaSO4 . ½H₂O is known as

Dacron (or Terylene) fibres as compared to nylon fibres have

Kaolin is a/an

Hydrazine (N₂H₄) is used mainly as a/an

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

Reaction of an alcohol with organic acid is called the __________ reaction.

Cement mainly contains

Detergent is produced by the sulphonation of dodecyl benzene, which is an __________ reaction.

Finely ground calcium aluminate & silicate is a/an

Wax is a

The major use of butadiene is

Mercury electrolytic cells are preferred over diaphragm electrolytic cell (for production of caustic soda), as it

CaCl(OCl) is the chemical formula of

Which of the following is a bleaching agent added in the detergents to facilitate removal of stains caused due to blood, tea etc?

Pick out the wrong statement.

__________ is produced using molasses as the starting raw material.

Nylon-66 is manufactured from

White phosphorous is stored under water, because

Fermentation is adversely affected by the

Sodium chloride content in sea water is about __________ gms/litre.

__________ of quicklime produces slaked lime.

Main constituents of Portland cement are calcium aluminate and

Sodium bisulphite is used for __________ water.

Phthalic anhydride is used

Main constituent of dolomite is

Bordeaux mixture is a/an

Hydrochloric acid is also known as

Also checkout

Air used in aerobic fermentation must be sterilized, otherwise the

Correct Answer :

Show all Chemical Process MCQ

Related Questions

Glauber's salt is chemically represented by

Double Contact Double Absorption (DCDA) process is the most recent process for the manufacture of

The catalyst used in the manufacture of DDT (from chloral and chlorobenzene) is

CaSO4 . ½H2O is known as

Dacron (or Terylene) fibres as compared to nylon fibres have

Kaolin is a/an

Hydrazine (N2H4) is used mainly as a/an

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

Reaction of an alcohol with organic acid is called the __________ reaction.

Cement mainly contains

Detergent is produced by the sulphonation of dodecyl benzene, which is an __________ reaction.

Finely ground calcium aluminate & silicate is a/an

Wax is a

The major use of butadiene is

Mercury electrolytic cells are preferred over diaphragm electrolytic cell (for production of caustic soda), as it

CaCl(OCl) is the chemical formula of

Which of the following is a bleaching agent added in the detergents to facilitate removal of stains caused due to blood, tea etc?

Pick out the wrong statement.

__________ is produced using molasses as the starting raw material.

Nylon-66 is manufactured from

White phosphorous is stored under water, because

Fermentation is adversely affected by the

Sodium chloride content in sea water is about __________ gms/litre.

__________ of quicklime produces slaked lime.

Main constituents of Portland cement are calcium aluminate and

Sodium bisulphite is used for __________ water.

Phthalic anhydride is used

Main constituent of dolomite is

Bordeaux mixture is a/an

Hydrochloric acid is also known as

Also checkout

CaSO4 . ½H₂O is known as

Hydrazine (N₂H₄) is used mainly as a/an