The end bleaching agent used to move last traces of colour bodies from the pulp is

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The end bleaching agent used to move last traces of colour bodies from the pulp is

A. Chlorine dioxide (ClO₂)

B. MgO

C. SO₂ gas

D. Mercaptans

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Polymerisation product of C2F4 (carbon tetrafluoride) is called P.T.F.E (poly chloro tetra fluoro ethylene). It is also called

A. Polyurethane

B. Silicone

C. Teflon

D. Epoxy resin

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Favourable conditions for the liquefaction of gases in general are

A. High pressure & low temperature

B. Low pressure & high temperature

C. High pressure & high temperature

D. Low pressure & low temperature

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Pick out the wrong statement.

A. Hard glass which is used for making laboratory glass wares is a mixture of sodium borosilicate and aluminium borosilicate

B. Glass is decolorized during its manufacture by adding antimony oxide, manganese dioxide or arsenic oxide

C. Ordinary glass is represented chemically by Na₂O . CaO . 6SiO₂

D. Red color is imparted to glass by addition of arsenic oxide

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Cumene (isopropyl benzene) is made by

A. Oxidation of naphthalene

B. Propylene alkylation of benzene

C. Polymerisation of a mixture of benzene & propylene

D. None of these

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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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Consider the production of ammonia from methene and air as raw materials. The catalysts used are:
(i) for steam reforming of methane and
(ii) for ammonia synthesis.

A. (i) - Ni/Al₂O₃; (ii) - Cu - ZnO/Al₂O₃

B. (i) - Fe/Al₂O₃; (ii) - Cu - ZnO/Al₂O₃

C. (i) - Ni/Al₂O₃; (ii) - Fe/Al₂O₃

D. (i) - Fe/Al₂O₃; (ii) - Ni/Al₂O₃

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The gasification reaction represented by, C + H₂O = CO + H₂, is a/an __________ reaction.

A. Exothermic

B. Endothermic

C. Catalytic

D. Autocatalytic

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Raw materials used for producing __________ cement does not contain iron oxide.

A. Waterproof

B. Slag

C. White

D. Pozzolan

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Cellulose content of bamboo and ideal fibrous raw material for the manufacture of paper is __________ percent.

A. 10

B. 50

C. 80

D. 95

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Rosin soap is added during paper manufacture to

A. Impart adhesive properties

B. Improve opacity

C. Impart resistance to penetration by liquids

D. None of these

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Industrial production of chloroform requires acetone and

A. Phosgene

B. Calcium hypochlorite

C. Chlorine

D. Ammonium chloride

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Sodium bisulphite is used for __________ water.

A. Deaeration

B. Dechlorination

C. Both (A) & (B)

D. Neither (A) nor (B)

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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)

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In the manufacture of H₂SO₄, vanadium catalyst as compared to platinum catalyst

A. Gives higher conversion efficiency

B. Has a longer life and is not poisoned by arsenic

C. Handles lower SO2 content gas (7 -10% SO₂), thus increasing the capital cost of the plant

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

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Synthetic glycerine is produced from

A. Toluene

B. Phenol

C. Propylene

D. Naphthalene

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The main aim behind cooling the digested chip at the bottom portion of the digestor by injecting cold black liquor is to

A. Avoid mechanical weakening of fibre

B. Remove lignin by way of crystallisation

C. Increase the cellulose content

D. None of these

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Transparent soaps (e.g. Pears) are

A. Usually soft soap (made from coconut oil) in which cane sugar & alcohol are added and finally washed with methylated spirit to achieve transparency

B. Metallic soaps with frothing agent and free Stearic acid to achieve transparency

C. Metallic soaps with frothing agent from which glycerine has not been recovered

D. None of these

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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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Concentration of hydrogen peroxide is done by

A. Crystallisation

B. Vacuum crystallisation

C. Atmospheric distillation

D. Dehydration

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

A. 50

B. 100

C. 200

D. 300

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Dacron is a

A. Condensation product of Hexamethylene diamine and adipic acid

B. Thermosetting material

C. Condensation product of dimethyl terephthalate and ethylene glycol

D. None of these

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Dehydrogenation of ethyl benzene produces

A. Styrene

B. Naphthalene

C. Phenol

D. Benzoic acid

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Pick out the false statement pertaining to water treatment.

A. Aeration of water is effective in CO2 removal

B. The zeolite water softening process reduces the hardness of water by not more than 50%

C. Sodium sulphate or sodium carbonate do not cause hardness in water

D. Water with pH value less than 7, is acidic

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Styrene-butadiene-rubber (SBR) as compared to natural rubber has

A. Poorer tensile strength

B. Poorer resistance to oxidation

C. Greater amount of heat build-up under heavy loading

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

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Which is the most suitable dye for synthetic fibres?

A. Acid dye

B. Azoic dye

C. Pigment dye

D. Mordant dye

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An alkali metal salt of Palmitic acid is known as

A. Soap

B. Metallic soap

C. Detergent

D. Alkaloid

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Alum is commercially produced from

A. Gypsum

B. Feldspar

C. Galena

D. Bauxite

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Accepted Answer

A. Chlorine dioxide (ClO₂)

The end bleaching agent used to move last traces of colour bodies from the pulp is

Correct Answer :

Show all Chemical Process MCQ

Related Questions

Polymerisation product of C2F4 (carbon tetrafluoride) is called P.T.F.E (poly chloro tetra fluoro ethylene). It is also called

Favourable conditions for the liquefaction of gases in general are

Pick out the wrong statement.

Cumene (isopropyl benzene) is made by

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

Consider the production of ammonia from methene and air as raw materials. The catalysts used are:
(i) for steam reforming of methane and
(ii) for ammonia synthesis.

The gasification reaction represented by, C + H₂O = CO + H₂, is a/an __________ reaction.

Raw materials used for producing __________ cement does not contain iron oxide.

Cellulose content of bamboo and ideal fibrous raw material for the manufacture of paper is __________ percent.

Rosin soap is added during paper manufacture to

Industrial production of chloroform requires acetone and

Sodium bisulphite is used for __________ water.

Which of the following contains least amount of N₂?

In the manufacture of H₂SO₄, vanadium catalyst as compared to platinum catalyst

Synthetic glycerine is produced from

The main aim behind cooling the digested chip at the bottom portion of the digestor by injecting cold black liquor is to

Transparent soaps (e.g. Pears) are

White phosphorous is stored under water, because

Concentration of hydrogen peroxide is done by

Liquefaction of gases cannot be done by

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

Sucrose is a disaccharide consisting of

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

Dacron is a

Dehydrogenation of ethyl benzene produces

Pick out the false statement pertaining to water treatment.

Styrene-butadiene-rubber (SBR) as compared to natural rubber has

Which is the most suitable dye for synthetic fibres?

An alkali metal salt of Palmitic acid is known as

Alum is commercially produced from

Also checkout

The end bleaching agent used to move last traces of colour bodies from the pulp is

Correct Answer :

Show all Chemical Process MCQ

Related Questions

Polymerisation product of C2F4 (carbon tetrafluoride) is called P.T.F.E (poly chloro tetra fluoro ethylene). It is also called

Favourable conditions for the liquefaction of gases in general are

Pick out the wrong statement.

Cumene (isopropyl benzene) is made by

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

Consider the production of ammonia from methene and air as raw materials. The catalysts used are:(i) __________ for steam reforming of methane and(ii) __________ for ammonia synthesis.

The gasification reaction represented by, C + H2O = CO + H2, is a/an __________ reaction.

Raw materials used for producing __________ cement does not contain iron oxide.

Cellulose content of bamboo and ideal fibrous raw material for the manufacture of paper is __________ percent.

Rosin soap is added during paper manufacture to

Industrial production of chloroform requires acetone and

Sodium bisulphite is used for __________ water.

Which of the following contains least amount of N2?

In the manufacture of H2SO4, vanadium catalyst as compared to platinum catalyst

Synthetic glycerine is produced from

The main aim behind cooling the digested chip at the bottom portion of the digestor by injecting cold black liquor is to

Transparent soaps (e.g. Pears) are

White phosphorous is stored under water, because

Concentration of hydrogen peroxide is done by

Liquefaction of gases cannot be done by

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

Sucrose is a disaccharide consisting of

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

Dacron is a

Dehydrogenation of ethyl benzene produces

Pick out the false statement pertaining to water treatment.

Styrene-butadiene-rubber (SBR) as compared to natural rubber has

Which is the most suitable dye for synthetic fibres?

An alkali metal salt of Palmitic acid is known as

Alum is commercially produced from

Also checkout

Consider the production of ammonia from methene and air as raw materials. The catalysts used are:
(i) for steam reforming of methane and
(ii) for ammonia synthesis.

The gasification reaction represented by, C + H₂O = CO + H₂, is a/an __________ reaction.

Which of the following contains least amount of N₂?

In the manufacture of H₂SO₄, vanadium catalyst as compared to platinum catalyst