Permanent hardness of water can be removed by

Question

Permanent hardness of water can be removed by

A. Boiling

B. Adding Ca(OH)₂

C. Boiling it with Na₂CO₃

D. None of these

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Fat dispersed in water is exemplified by

A. Colloids

B. Gel

C. Butter

D. Emulsion

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Liquefaction of gases cannot be done by

A. Exchange of heat with colder stream

B. Adiabatic expansion through a throttle valve (Joule-Thomson expansion)

C. Merely compressing it beyond critical pressure

D. Adiabatic expansion against a piston or in a turbine

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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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Which of the following is an yellow pigment?

A. Titanium dioxide

B. Ferrous sulphate

C. Lead chromates

D. Zinc sulphides

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Commonly used glass is known as the __________ glass.

A. Flint

B. Hard

C. Pyrex

D. Soda

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Kopper-Totzek coal gasifier

A. Can give ammonia synthesis gas (H2 + N2)

B. Is a moving bed reactor

C. Cannot use coking coal

D. Operate at very high pressure

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__________ acid is the main constituent of cotton seed oil.

A. Acetic

B. Linoleic

C. Palmitic

D. Oleic

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Alum is commercially produced from

A. Gypsum

B. Feldspar

C. Galena

D. Bauxite

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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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Resistance to fusion of the refractory under a steady rising temperature condition is called

A. Spalling

B. Refractoriness

C. Both (A) & (B)

D. Neither (A) nor (B)

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The function of gypsum addition during cement making is to

A. Increase the density of cement

B. Decrease the cement setting rate

C. Both (A) and (B)

D. Neither (A) nor (B)

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Catalyst used in the hydrogenation of oil is

A. Nickel

B. Platinum

C. Iron

D. Alumina

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Sucrose is a disaccharide consisting of

A. Glucose and glucose

B. Glucose and fructose

C. Glucose and galactose

D. Fructose and galactose

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Exothermic condensation reaction of monochlorobenzene with chloral in presence of 20% oleum as catalyst produces DDT. The reaction temperature is maintained at __________ °C.

A. 15-30

B. 90-100

C. 250-300

D. < 0

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Commercial scale production of hydrogen from iron-steam reaction represented by, 3Fe + 3H₂O = Fe₃O₄ + 4H₂, is not practised, as it is

A. A slow reaction

B. A discontinuous reaction (requiring regeneration of iron by water gas intermittently)

C. Still in development stage (by employing fluidised bed technique)

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

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Dense soda ash used in the manufacture of glass, is chemically represented by

A. Na₂CO₃

B. Na₂CO₃.10H₂O

C. Na₂CO₃.H₂O

D. Na₂HCO₃

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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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Trinitrotoluene (TNT), an explosive, is made by the nitration of

A. Nitrobenzene

B. Toluene

C. Nitrotoluene

D. Benzene

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Flash point of most vegetable oils is about __________ °C.

A. 50

B. 100

C. 200

D. 300

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20% oleum means that in 100 kg oleum, there are 20 kg of

A. SO₃ and 80kg of H₂SO₄

B. H₂SO₄ and 80kg of SO₃

C. SO₃ for each 100 kg of H₂SO₄

D. None of these

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Fourdrinier machine is used in the manufacture of

A. Sugar

B. Paper

C. Alcohol from molasses

D. Phenol formaldehyde

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Saponification value/number of an oil or fat is a measure of its

A. Fatty acid content

B. Degree of unsaturation of the fatty acids present in it

C. Average molecular weight

D. Insoluble fatty acid content

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Hydrochloric acid is also known as

A. Oil of vitriol

B. Muriatic acid

C. Strong organic acid

D. Green acid

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Metallic soap is __________ salt of fatty acids.

A. Sodium

B. Potassium

C. Both sodium & potassium

D. Aluminium or calcium

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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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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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Rancidity of the fatty oil can be reduced by its

A. Decoloration

B. Hydrogenation

C. Oxidation

D. Purification

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The main use of activated carbon in water treatment is to control

A. Bacterial growth

B. Taste and odour

C. Turbidity

D. None of these

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Glycerine is not used in the

A. Manufacture of explosive

B. Conditioning and humidification of tobacco

C. Manufacture of pharmaceuticals

D. None of these

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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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Accepted Answer

C. Boiling it with Na₂CO₃

Permanent hardness of water can be removed by

Correct Answer :

Show all Chemical Process MCQ

Related Questions

Fat dispersed in water is exemplified by

Liquefaction of gases cannot be done by

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

Which of the following is an yellow pigment?

Commonly used glass is known as the __________ glass.

Kopper-Totzek coal gasifier

__________ acid is the main constituent of cotton seed oil.

Alum is commercially produced from

In the Solvay process, the product from the calciner is

Resistance to fusion of the refractory under a steady rising temperature condition is called

The function of gypsum addition during cement making is to

Catalyst used in the hydrogenation of oil is

Sucrose is a disaccharide consisting of

Exothermic condensation reaction of monochlorobenzene with chloral in presence of 20% oleum as catalyst produces DDT. The reaction temperature is maintained at __________ °C.

Commercial scale production of hydrogen from iron-steam reaction represented by, 3Fe + 3H₂O = Fe₃O₄ + 4H₂, is not practised, as it is

Dense soda ash used in the manufacture of glass, is chemically represented by

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

Trinitrotoluene (TNT), an explosive, is made by the nitration of

Flash point of most vegetable oils is about __________ °C.

20% oleum means that in 100 kg oleum, there are 20 kg of

Fourdrinier machine is used in the manufacture of

Saponification value/number of an oil or fat is a measure of its

Hydrochloric acid is also known as

Metallic soap is __________ salt of fatty acids.

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

Fluorescent dyes are added in detergents to

Rancidity of the fatty oil can be reduced by its

The main use of activated carbon in water treatment is to control

Glycerine is not used in the

Adipic acid is an intermediate in the manufacture of

Also checkout

Permanent hardness of water can be removed by

Correct Answer :

Show all Chemical Process MCQ

Related Questions

Fat dispersed in water is exemplified by

Liquefaction of gases cannot be done by

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

Which of the following is an yellow pigment?

Commonly used glass is known as the __________ glass.

Kopper-Totzek coal gasifier

__________ acid is the main constituent of cotton seed oil.

Alum is commercially produced from

In the Solvay process, the product from the calciner is

Resistance to fusion of the refractory under a steady rising temperature condition is called

The function of gypsum addition during cement making is to

Catalyst used in the hydrogenation of oil is

Sucrose is a disaccharide consisting of

Exothermic condensation reaction of monochlorobenzene with chloral in presence of 20% oleum as catalyst produces DDT. The reaction temperature is maintained at __________ °C.

Commercial scale production of hydrogen from iron-steam reaction represented by, 3Fe + 3H2O = Fe3O4 + 4H2, is not practised, as it is

Dense soda ash used in the manufacture of glass, is chemically represented by

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

Trinitrotoluene (TNT), an explosive, is made by the nitration of

Flash point of most vegetable oils is about __________ °C.

20% oleum means that in 100 kg oleum, there are 20 kg of

Fourdrinier machine is used in the manufacture of

Saponification value/number of an oil or fat is a measure of its

Hydrochloric acid is also known as

Metallic soap is __________ salt of fatty acids.

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

Fluorescent dyes are added in detergents to

Rancidity of the fatty oil can be reduced by its

The main use of activated carbon in water treatment is to control

Glycerine is not used in the

Adipic acid is an intermediate in the manufacture of

Also checkout

Commercial scale production of hydrogen from iron-steam reaction represented by, 3Fe + 3H₂O = Fe₃O₄ + 4H₂, is not practised, as it is