Thermosetting plastic materials

Question

Thermosetting plastic materials

A. Can be repeatedly melted

B. Is useful for melt casting

C. Cannot be melted after forming

D. Is useful for spinning

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Nicotine is

A. A volatile alkaloid

B. Obtained by treating by-products of the tobacco processing industry

C. Both (A) and (B)

D. Neither (A) nor (B)

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

A. Trichloroethylene

B. Perchloroethylene

C. Parathion

D. Methanol

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Ethanol amine is produced using ammonia and

A. Ethyl benzene

B. Ethylene oxide

C. Ethanol

D. Ethane

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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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Which of the following is not produced commercially from sea water?

A. Magnesium & potassium compounds

B. Common salt

C. Bromine

D. Iodine

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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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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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__________ of rubber decreases after its vulcanisation.

A. Resistance to the action of organic solvent

B. Tackiness

C. Maximum service temperature

D. Tensile strength

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__________ glass has the lowest co-efficient of thermal expansion and hence is more heat resistant.

A. Pyrex

B. Soda lime

C. Lead

D. High silica

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Co-efficient of thermal expansion of glass is decreased by the addition of __________ during its manufacture.

A. CaO

B. MnO₂

C. ZnO

D. FeS

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Styrene butadiene rubber (SBR) is

A. A natural rubber

B. A synthetic polymer

C. A synthetic monomer

D. Another name of silicone rubber

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Cooking liquor in case of sulphite process is

A. Sodium sulphite and sodium bisulphite

B. Magnesium sulphite and free SO2 in acid medium

C. Magnesium sulphate and magnesium bicarbonate

D. None of these

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Bitterns is a/an

A. Unsaturated fat

B. Starting material for the production of iodine

C. By-product of chlor-alkali industry

D. None of these

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Silicon carbide is a/an

A. Adhesive

B. Abrasive

C. Type of glass

D. Brittle material

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Bleaching powder (chemically known as calcium chloro hypochlorite) is commercially produced by the action of chlorine on

A. Slaked lime

B. Soda lime

C. Calcium perchlorate

D. None of these

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Which of the following coals has the highest calorific value?

A. Lignite

B. Sub-bituminous

C. Anthracite

D. Peat

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Liquor poisoning generally occurs due to the presence of __________ in it.

A. Ethyl alcohol

B. Impurities

C. Methyl alcohol

D. Carbonic acid

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Adipic acid is an intermediate in the manufacture of

A. Perspex

B. Nylon-66

C. Polystyrene

D. Bakelite

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Sucrose content in the raw juice extracted from sugar cane is about __________ percent.

A. 1 - 2

B. 15 - 20

C. 50 - 60

D. 80 - 85

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Major component of flint glass is

A. Lead oxide

B. Silica

C. Alumina

D. Soda

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Lithophane is

A. Explosive

B. White lead

C. Filter aid

D. ZnS (white pigment)

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Dehydrogenation of ethyl benzene produces

A. Styrene

B. Naphthalene

C. Phenol

D. Benzoic acid

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Which of the following is not a product of coal tar distillation?

A. Anthracene

B. Creosote oil

C. Carbolic oil

D. None of these

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__________ process is used for the commercial production of nitric acid by the catalytic oxidation of ammonia.

A. Solvay

B. Ostwald's

C. Haber's

D. None of these

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Sulphuric acid saturated with SO₃ is called

A. Concentrated H₂SO₄

B. Sulphurous acid

C. Oleum

D. None of these

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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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Production of alcohol by fermentation of molasses is a/an __________ process.

A. Anaerobic

B. Aerobic

C. Endothermic

D. Both (B) and (C)

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The compressive strength of cement should not be less than about 110Kg/cm² after three days & not less than 170Kg/cm² after seven days. The fineness of an ordinary cement as determined by turbidimetric method should be about __________ cm²/gm.

A. 800

B. 1600

C. 4000

D. 8500

Discuss this answer

Which of the following contains least amount of N₂?

A. Coke oven gas

B. Blast furnace gas

C. Producer gas

D. Water gas (blue gas)

Discuss this answer

Accepted Answer

C. Cannot be melted after forming

Thermosetting plastic materials

Correct Answer :

Show all Chemical Process MCQ

Related Questions

Nicotine is

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

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

Ethanol amine is produced using ammonia and

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.

Which of the following is not produced commercially from sea water?

Pick out the wrong statement.

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

__________ of rubber decreases after its vulcanisation.

__________ glass has the lowest co-efficient of thermal expansion and hence is more heat resistant.

Co-efficient of thermal expansion of glass is decreased by the addition of __________ during its manufacture.

Styrene butadiene rubber (SBR) is

Cooking liquor in case of sulphite process is

Bitterns is a/an

Silicon carbide is a/an

Bleaching powder (chemically known as calcium chloro hypochlorite) is commercially produced by the action of chlorine on

Which of the following coals has the highest calorific value?

Liquor poisoning generally occurs due to the presence of __________ in it.

Adipic acid is an intermediate in the manufacture of

Sucrose content in the raw juice extracted from sugar cane is about __________ percent.

Major component of flint glass is

Lithophane is

Dehydrogenation of ethyl benzene produces

Which of the following is not a product of coal tar distillation?

__________ process is used for the commercial production of nitric acid by the catalytic oxidation of ammonia.

Sulphuric acid saturated with SO₃ is called

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

Production of alcohol by fermentation of molasses is a/an __________ process.

The compressive strength of cement should not be less than about 110Kg/cm² after three days & not less than 170Kg/cm² after seven days. The fineness of an ordinary cement as determined by turbidimetric method should be about __________ cm²/gm.

Which of the following contains least amount of N₂?

Also checkout

Thermosetting plastic materials

Correct Answer :

Show all Chemical Process MCQ

Related Questions

Nicotine is

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

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

Ethanol amine is produced using ammonia and

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.

Which of the following is not produced commercially from sea water?

Pick out the wrong statement.

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

__________ of rubber decreases after its vulcanisation.

__________ glass has the lowest co-efficient of thermal expansion and hence is more heat resistant.

Co-efficient of thermal expansion of glass is decreased by the addition of __________ during its manufacture.

Styrene butadiene rubber (SBR) is

Cooking liquor in case of sulphite process is

Bitterns is a/an

Silicon carbide is a/an

Bleaching powder (chemically known as calcium chloro hypochlorite) is commercially produced by the action of chlorine on

Which of the following coals has the highest calorific value?

Liquor poisoning generally occurs due to the presence of __________ in it.

Adipic acid is an intermediate in the manufacture of

Sucrose content in the raw juice extracted from sugar cane is about __________ percent.

Major component of flint glass is

Lithophane is

Dehydrogenation of ethyl benzene produces

Which of the following is not a product of coal tar distillation?

__________ process is used for the commercial production of nitric acid by the catalytic oxidation of ammonia.

Sulphuric acid saturated with SO3 is called

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

Production of alcohol by fermentation of molasses is a/an __________ process.

The compressive strength of cement should not be less than about 110Kg/cm2 after three days & not less than 170Kg/cm2 after seven days. The fineness of an ordinary cement as determined by turbidimetric method should be about __________ cm2/gm.

Which of the following contains least amount of N2?

Also checkout

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

Sulphuric acid saturated with SO₃ is called

The compressive strength of cement should not be less than about 110Kg/cm² after three days & not less than 170Kg/cm² after seven days. The fineness of an ordinary cement as determined by turbidimetric method should be about __________ cm²/gm.

Which of the following contains least amount of N₂?