Dichloro diphenyl __________ is the full form of DDT (an insecticide).

Question

Dichloro diphenyl __________ is the full form of DDT (an insecticide).

A. Tetrachloroethane

B. Trichloroethane

C. Tetrachloromethane

D. Trichloromethane

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__________ is used as a flux in the smelting of copper ore like chalcopyrite.

A. Coke breeze

B. Lime powder

C. Silica/quartz

D. Dolomite

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The difference between saponification value and acid value is

A. Called ester value

B. Always negative

C. Constant for all fatty oils

D. None of these

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In nylon-66, the first and second numbers (i.e., 6) respectively designate the number of carbon atoms present in the

A. Diamine and the ring

B. Dibasic acid and the ring

C. Diamine and the dibasic acid

D. None of these

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Setting of plaster of Paris is accompanied with

A. Hydration

B. Dehydration

C. Hydrolysis

D. Loss of CO₂

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Concentration of sulphide ores is done usually by

A. Roasting

B. Smelting

C. Froth floatation

D. Electromagnetic separation

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The terminology 'BTX' used in coal tar distillation industry refers to

A. Benzol-toluol-xylol

B. Benzol-toluene-xylene

C. Benzene-toluol-xylol

D. Benzene-toluene-xylene

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Chemical formula of BHC, which is an insecticide is

A. C₆H₆Cl₆

B. C₆Cl₆

C. C₆H₅Cl

D. C₆H₄Cl₂

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Which of the following is an endothermic reaction?

A. Absorption of SO₃ in 98% H₂SO₄

B. C + H₂O = CO + H₂

C. Thermal dissociation of iron pyrites

D. Both (B) and (C)

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Fermentation of molasses to produce ethyl alcohol is done at __________ °C.

A. 20 - 30

B. < - 5

C. 100 - 150

D. 250 - 300

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Which of the following is not required in the manufacture of soda ash by Solvay process?

A. Ammonia

B. Limestone

C. Nitric acid

D. None of these

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Yeast is used in the manufacture of

A. Penicillin

B. Antibiotics

C. Wine

D. Pasteurised milk

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Which is the main reducing agent during production of iron from iron ore in a blast furnace?

A. C

B. CO

C. CO₂

D. H₂

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Bakelite is chemically known as

A. Polyvinyl chloride (PVC)

B. Polybutadiene

C. Phenol formaldehyde

D. Polyurethane

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Extraction of __________ employs an electrolytic process.

A. Aluminium

B. Silver

C. Copper

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

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The yield of tar from high temperature carbonisation of dry coal is about __________ percent.

A. 3

B. 12

C. 22

D. 0.3

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Fluorescent dyes are added in detergents to

A. Act as fabric brightener (by converting ultraviolet light to visible light) thereby improving the whiteness appearance of white fabrics

B. Attain distinctiveness from other brands

C. Act as tarnish inhibitor for metals like German silver

D. None of these

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Which of the following is an yellow pigment?

A. Titanium dioxide

B. Ferrous sulphate

C. Lead chromates

D. Zinc sulphides

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Pick out the wrong statement.

A. Fibrillation of fibre during paper manufacture is done to develop the strength in paper

B. Alkali consumption in digestion/cooking of bamboo is measured in terms of permanganate number

C. Bagasse fibre contains both lignin & cellulose

D. Presence of sodium sulphate in pulp makes the pulp bleachability poor

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The most commonly used substance to speed up the sedimentation of sewage is

A. Lime

B. Sulphuric acid

C. Chlorine

D. Sodium bisulphite

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Oxidation of SO₂ to SO₃ is favoured by

A. Low temperature and low pressure

B. Low temperature and high pressure

C. High temperature and low pressure

D. High temperature and high pressure

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Starting raw material for the manufacture of Maleic anhydride is

A. n-butene

B. Benzene

C. Either (A) or (B)

D. Neither (A) nor (B)

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Solvent extracted oil

A. Has low free fatty acid content

B. Is odourless

C. Has more of unsaturates

D. None of these

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Pure rectified spirit contains about __________ percent alcohol.

A. 45

B. 70

C. 95

D. 99.5

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The temperature in the calcium carbide furnace is __________ °C.

A. 200-300

B. 700-850

C. 2000-2200

D. 4000-4500

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Contact process of sulphuric acid manufacture

A. Yields acid of higher concentration than chamber process

B. Yields acids of lower concentration than chamber process

C. Is obsolete

D. Eliminates absorber

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Haemoglobin is a/an

A. Amino acid

B. Biological catalyst

C. Protein

D. Enzyme

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Parathion and Malathion are

A. Pesticides

B. Plasticisers for unsaturated polyesters

C. Pain-relieving drugs (analgesic)

D. Tranquilisers

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Catalytic oxidation-dehydrogenation of methyl alcohol produces

A. Formaldehyde

B. Phenol

C. Acetone

D. Maleic anhydride

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Cement setting under water employs a/an __________ process.

A. Hydration

B. Decomposition

C. Oxidation

D. Reduction

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Pig iron is produced by blast furnaces in India using mostly the iron ore named

A. Hematite

B. Magnetite

C. Siderite

D. Chalcopyrite

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Accepted Answer

B. Trichloroethane

Dichloro diphenyl __________ is the full form of DDT (an insecticide).

Correct Answer :

Show all Chemical Process MCQ

Related Questions

__________ is used as a flux in the smelting of copper ore like chalcopyrite.

The difference between saponification value and acid value is

In nylon-66, the first and second numbers (i.e., 6) respectively designate the number of carbon atoms present in the

Setting of plaster of Paris is accompanied with

Concentration of sulphide ores is done usually by

The terminology 'BTX' used in coal tar distillation industry refers to

Chemical formula of BHC, which is an insecticide is

Which of the following is an endothermic reaction?

Fermentation of molasses to produce ethyl alcohol is done at __________ °C.

Which of the following is not required in the manufacture of soda ash by Solvay process?

Yeast is used in the manufacture of

Which is the main reducing agent during production of iron from iron ore in a blast furnace?

Bakelite is chemically known as

Extraction of __________ employs an electrolytic process.

The yield of tar from high temperature carbonisation of dry coal is about __________ percent.

Fluorescent dyes are added in detergents to

Which of the following is an yellow pigment?

Pick out the wrong statement.

The most commonly used substance to speed up the sedimentation of sewage is

Oxidation of SO₂ to SO₃ is favoured by

Starting raw material for the manufacture of Maleic anhydride is

Solvent extracted oil

Pure rectified spirit contains about __________ percent alcohol.

The temperature in the calcium carbide furnace is __________ °C.

Contact process of sulphuric acid manufacture

Haemoglobin is a/an

Parathion and Malathion are

Catalytic oxidation-dehydrogenation of methyl alcohol produces

Cement setting under water employs a/an __________ process.

Pig iron is produced by blast furnaces in India using mostly the iron ore named

Also checkout

Dichloro diphenyl __________ is the full form of DDT (an insecticide).

Correct Answer :

Show all Chemical Process MCQ

Related Questions

__________ is used as a flux in the smelting of copper ore like chalcopyrite.

The difference between saponification value and acid value is

In nylon-66, the first and second numbers (i.e., 6) respectively designate the number of carbon atoms present in the

Setting of plaster of Paris is accompanied with

Concentration of sulphide ores is done usually by

The terminology 'BTX' used in coal tar distillation industry refers to

Chemical formula of BHC, which is an insecticide is

Which of the following is an endothermic reaction?

Fermentation of molasses to produce ethyl alcohol is done at __________ °C.

Which of the following is not required in the manufacture of soda ash by Solvay process?

Yeast is used in the manufacture of

Which is the main reducing agent during production of iron from iron ore in a blast furnace?

Bakelite is chemically known as

Extraction of __________ employs an electrolytic process.

The yield of tar from high temperature carbonisation of dry coal is about __________ percent.

Fluorescent dyes are added in detergents to

Which of the following is an yellow pigment?

Pick out the wrong statement.

The most commonly used substance to speed up the sedimentation of sewage is

Oxidation of SO2 to SO3 is favoured by

Starting raw material for the manufacture of Maleic anhydride is

Solvent extracted oil

Pure rectified spirit contains about __________ percent alcohol.

The temperature in the calcium carbide furnace is __________ °C.

Contact process of sulphuric acid manufacture

Haemoglobin is a/an

Parathion and Malathion are

Catalytic oxidation-dehydrogenation of methyl alcohol produces

Cement setting under water employs a/an __________ process.

Pig iron is produced by blast furnaces in India using mostly the iron ore named

Also checkout

Oxidation of SO₂ to SO₃ is favoured by