Permanent hardness of water can be removed by

Question

Permanent hardness of water can be removed by

A. Addition of soda ash to it

B. Treating it with zeolites

C. Passing it through sodium hexametaphosphate

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

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Pick out the wrong statement.

A. Azoic dyes are mostly applied on cotton fabrics

B. Basic dyes (e.g. amino derivatives) are applied mostly to paper

C. Mordant dyes are applied mainly to wools

D. None of these

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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

Discuss this answer

Hydrogenation of edible vegetable oils

A. Is an exothermic reaction

B. Increases their melting point

C. Is done in presence of nickel catalyst

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

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Hollander beater used during paper pulp manufacture does not facilitate the __________ of fibre.

A. Cutting

B. Fibrillation

C. Hydration

D. Strengthening

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Soap cannot be used with hard water, because

A. Hard water contains sulphate

B. They form insoluble calcium soaps which precipitate

C. They attract back the removed dirt

D. None of these

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Which of the following is a co-product during the manufacture of caustic soda by electrolysis of brine?

A. Na₂CO₃

B. NaHCO₃

C. H₂

D. None of these

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Use of hydrated lime in water treatment

A. Before filtration, reduces the bacterial load on filters

B. After filtration, combats the corrosiveness of water due to the presence of O₂ & CO₂

C. Is to adjust the pH value

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

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Which of the following is not a food additive?

A. Citric acid

B. Invertage

C. Benzoyl peroxide

D. Ammonium chloride

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__________ process is used for producing soda ash.

A. Chamber

B. Chance

C. Tromp

D. Solvay

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Sucrose content in cane sugar may be around __________ percent.

A. 50

B. 70

C. 95

D. 80

Discuss this answer

Salt is added in the kettle during soap manufacture to separate

A. Soap from lye

B. Glycerine from lye

C. The metallic soap

D. The unsaponified fat from soap

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Permanent hardness of water can be removed by

A. Addition of soda ash to it

B. Treating it with zeolites

C. Passing it through sodium hexametaphosphate

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

Discuss this answer

Analgesic drugs are

A. Pain relievers

B. Antibiotics

C. Used in the treatment of T.B.

D. Used in the treatment of typhoid

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At a given temperature, the equilibrium yield of SO3 obtained from the oxidation of SO2 is proportional to (where, P = pressure of the system).

A. P

B. √P

C. P²

D. 1/P

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Which of the following is not an antibiotic?

A. Penicillin

B. Streptomycin

C. Tetracycline

D. Quinine

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__________ is an ore of lead.

A. Quartz

B. Galena

C. Siderite

D. Chalcopyrite

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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

Discuss this answer

Lime and soda ash are added to water to remove

A. Bicarbonates & sulphates of calcium and magnesium

B. Undesirable taste and odour

C. Bacteria

D. Its corrosiveness

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Oils and fats are converted to soap in a process called

A. Hydrogenation

B. Esterification

C. Saponification

D. None of these

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Nitric acid is not used in the manufacture of

A. Detergents

B. Fertilisers

C. Aqua regia

D. Explosives

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Separation of fresh water from sea water can be done by the __________ operation.

A. Osmosis

B. Reverse osmosis

C. Absorption

D. Adsorption

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Frasch process is for

A. Making oxygen

B. Producing helium

C. Mining sulphur

D. Making nitrogen

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Good quality of edible salt is obtained from brine by the process of

A. Solar evaporation

B. Vacuum evaporation

C. Freeze drying

D. Electrolysis

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Paper grade bamboo contains about __________ percent cellulose.

A. 5

B. 20

C. 40

D. 60

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Drinking (potable) water treatment does not involve

A. Coagulation

B. Sedimentation

C. Softening

D. Disinfection

Discuss this answer

Sulphuric acid completely saturated with sulphur trioxide is called

A. Concentrated sulphuric acid

B. Oleum

C. Sulphurous acid

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

A. 2

B. 10

C. 25

D. 50

Discuss this answer

Helium is produced on commercial scale from

A. Air

B. Natural gas

C. Coke oven gas

D. None of these

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Argon is the third largest constituent of air (followed by N₂ & O₂). Its percentage by volume in air is

A. 0.14

B. 0.34

C. 0.94

D. 1.4

Discuss this answer

Accepted Answer

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

Permanent hardness of water can be removed by

Correct Answer :

Show all Chemical Process MCQ

Related Questions

Pick out the wrong statement.

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

Hydrogenation of edible vegetable oils

Hollander beater used during paper pulp manufacture does not facilitate the __________ of fibre.

Soap cannot be used with hard water, because

Which of the following is a co-product during the manufacture of caustic soda by electrolysis of brine?

Use of hydrated lime in water treatment

Which of the following is not a food additive?

__________ process is used for producing soda ash.

Sucrose content in cane sugar may be around __________ percent.

Salt is added in the kettle during soap manufacture to separate

Permanent hardness of water can be removed by

Analgesic drugs are

At a given temperature, the equilibrium yield of SO3 obtained from the oxidation of SO2 is proportional to (where, P = pressure of the system).

Which of the following is not an antibiotic?

__________ is an ore of lead.

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

Lime and soda ash are added to water to remove

Oils and fats are converted to soap in a process called

Nitric acid is not used in the manufacture of

Separation of fresh water from sea water can be done by the __________ operation.

Frasch process is for

Good quality of edible salt is obtained from brine by the process of

Paper grade bamboo contains about __________ percent cellulose.

Drinking (potable) water treatment does not involve

Sulphuric acid completely saturated with sulphur trioxide is called

Metallic soap is __________ salt of fatty acids.

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

Helium is produced on commercial scale from

Argon is the third largest constituent of air (followed by N₂ & O₂). Its percentage by volume in air is

Also checkout

Permanent hardness of water can be removed by

Correct Answer :

Show all Chemical Process MCQ

Related Questions

Pick out the wrong statement.

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

Hydrogenation of edible vegetable oils

Hollander beater used during paper pulp manufacture does not facilitate the __________ of fibre.

Soap cannot be used with hard water, because

Which of the following is a co-product during the manufacture of caustic soda by electrolysis of brine?

Use of hydrated lime in water treatment

Which of the following is not a food additive?

__________ process is used for producing soda ash.

Sucrose content in cane sugar may be around __________ percent.

Salt is added in the kettle during soap manufacture to separate

Permanent hardness of water can be removed by

Analgesic drugs are

At a given temperature, the equilibrium yield of SO3 obtained from the oxidation of SO2 is proportional to (where, P = pressure of the system).

Which of the following is not an antibiotic?

__________ is an ore of lead.

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

Lime and soda ash are added to water to remove

Oils and fats are converted to soap in a process called

Nitric acid is not used in the manufacture of

Separation of fresh water from sea water can be done by the __________ operation.

Frasch process is for

Good quality of edible salt is obtained from brine by the process of

Paper grade bamboo contains about __________ percent cellulose.

Drinking (potable) water treatment does not involve

Sulphuric acid completely saturated with sulphur trioxide is called

Metallic soap is __________ salt of fatty acids.

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

Helium is produced on commercial scale from

Argon is the third largest constituent of air (followed by N2 & O2). Its percentage by volume in air is

Also checkout

Argon is the third largest constituent of air (followed by N₂ & O₂). Its percentage by volume in air is