Wood charcoal is used for decolouration of sugar, because it __________ the coloured materials.

Question

Wood charcoal is used for decolouration of sugar, because it __________ the coloured materials.

A. Adsorbs

B. Oxidises

C. Reduces

D. Converts

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Pick out the wrong statement.

A. High early strength cement are made from materials having high silica to lime ratio

B. The function of gypsum in cement is to enhance its initial setting rate

C. Acid resistant cements are known as silicate cement

D. Major component of greyish Portland cement is tricalcium silicate

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Alcohol is produced by the

A. Oxidation of an aldehyde

B. Hydrolysis of an ether

C. Esterification of a fat

D. None of these

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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

Discuss this answer

Pick out the wrong statement. Iodine value of an oil or fat is

A. The number of grams of iodine taken up by 100 gm of oil or fat

B. A measure of its unsaturation

C. Helpful in findings its adulteration & its suitability for making soap

D. Independent of the type of oil, whether it is drying or non-drying

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The purpose of adding Na₂CO₃ to water of low alkalinity is to

A. Permit the use of alum as a coagulant

B. Increase the softening capacity of zeolite

C. Facilitate easy regeneration of zeolite

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

Discuss this answer

Wet chlorine gas produced during electrolysis of brine is dehydrated by

A. Spraying 66° Be H2SO4 counter current to the flow of the gas

B. Passing it through a bed of diatomaceous earth

C. Passing it through a bed of silica gel

D. None of these

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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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Bromine is used in the preparation of

A. Fire extinguishing compounds

B. Fire proofing agents

C. Dyes and antiknock compounds

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

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Platinum is a versatile catalyst for many processes in chemical industries. It is highly prone to be poisoned by the presence of

A. Carbon

B. Arsenic

C. Lead

D. Sulphur

Discuss this answer

Which of the following, when pyrolysed, produces Perchloroethylene?

A. Ethylene dichloride

B. Chlorobenzene

C. Carbon tetrachloride

D. Chlorinated paraffin

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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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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)

Discuss this answer

Calcination of gypsum produces

A. Plaster of Paris

B. Salt cake

C. Nitre cake

D. Lime

Discuss this answer

SO2 is bubbled through hot sugar cane juice to

A. Act as an acidifying agent

B. Increase its concentration

C. Increase the amount of molasses

D. Increase the crystal size

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During the absorption of HCl gas in water (to produce liquid HCl), the gas is kept above dew point to

A. Increase the rate of absorption

B. Avoid corrosion

C. Reduce the cooling water circulation rate

D. None of these

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A bio-catalyst produced by living cells which acts independent of the cell is called a/an

A. Substrate

B. Enzyme

C. Nutrient

D. None of these

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Yellow glycerine is made into white, using

A. Activated carbon

B. Diatomaceous earth

C. Bauxite

D. Bentonite

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Carbon disulphide is mainly used in the production of

A. Viscose rayon

B. Corundum

C. Plasticiser for unsaturated polyester

D. Paints

Discuss this answer

P.T.F.E. (Poly tetra fluoro ethylene) is commercially known as

A. Bakelite

B. Neoprene

C. Teflon

D. Nylon-66

Discuss this answer

Gun powder uses

A. Sulphur

B. Charcoal

C. Potassium nitrate

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

Discuss this answer

Pick out the wrong statement.

A. Wine, rum & Vodka are prepared by the formulation of fruit juice, sugar beet & rye respectively

B. Protein catalysts are called enzymes

C. The rate of chemical reaction is independent of the concentration of reactants at high concentration of enzymes

D. Total sugar content in molasses is about 10%

Discuss this answer

Viscose rayon is

A. Cellulose nitrate

B. Regenerated cellulose nitrate

C. Regenerated cellulose acetate

D. None of these

Discuss this answer

Polycaprolactam is commercially known as

A. Nylon-6

B. Nylon-66

C. Dacron

D. Rayon

Discuss this answer

Pick out the wrong statement.

A. Kraft method of pulp manufacture can process all types of fibrous raw materials

B. Digestion time for bagasse is less than that for wood base materials

C. Both temperature and pressure in the digestor is less in case of the sulphite method as compared to that in the sulphate method

D. None of these

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Poly Tetrafluoroethylene (P.T.F.E.) is known as

A. Bakelite

B. Teflon

C. Celluloid

D. Dacron

Discuss this answer

Potassium is kept & transported under

A. Water

B. Liquid ammonia

C. Kerosene oil

D. Alcohol

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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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Main product in calcium carbide-water reaction is

A. Ca(OH)₂

B. C₂H₂

C. CO₂

D. CaCO₃

Discuss this answer

Producer gas consists mainly of

A. CO, CO₂ N₂, H₂

B. CO, H₂

C. H₂, CH₄

D. C₂H₂, CO₂, H₂

Discuss this answer

Phenol formaldehyde

A. Employs addition polymerisation

B. Employs condensation polymerisation

C. Is a monomer

D. Is an abrasive material

Discuss this answer

Accepted Answer

A. Adsorbs

Wood charcoal is used for decolouration of sugar, because it __________ the coloured materials.

Correct Answer :

Show all Chemical Process MCQ

Related Questions

Pick out the wrong statement.

Alcohol is produced by the

Sucrose is a disaccharide consisting of

Pick out the wrong statement. Iodine value of an oil or fat is

The purpose of adding Na₂CO₃ to water of low alkalinity is to

Wet chlorine gas produced during electrolysis of brine is dehydrated by

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

Bromine is used in the preparation of

Platinum is a versatile catalyst for many processes in chemical industries. It is highly prone to be poisoned by the presence of

Which of the following, when pyrolysed, produces Perchloroethylene?

__________ of rubber decreases after its vulcanisation.

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

Calcination of gypsum produces

SO2 is bubbled through hot sugar cane juice to

During the absorption of HCl gas in water (to produce liquid HCl), the gas is kept above dew point to

A bio-catalyst produced by living cells which acts independent of the cell is called a/an

Yellow glycerine is made into white, using

Carbon disulphide is mainly used in the production of

P.T.F.E. (Poly tetra fluoro ethylene) is commercially known as

Gun powder uses

Pick out the wrong statement.

Viscose rayon is

Polycaprolactam is commercially known as

Pick out the wrong statement.

Poly Tetrafluoroethylene (P.T.F.E.) is known as

Potassium is kept & transported under

Fluorescent dyes are added in detergents to

Main product in calcium carbide-water reaction is

Producer gas consists mainly of

Phenol formaldehyde

Also checkout

Wood charcoal is used for decolouration of sugar, because it __________ the coloured materials.

Correct Answer :

Show all Chemical Process MCQ

Related Questions

Pick out the wrong statement.

Alcohol is produced by the

Sucrose is a disaccharide consisting of

Pick out the wrong statement. Iodine value of an oil or fat is

The purpose of adding Na2CO3 to water of low alkalinity is to

Wet chlorine gas produced during electrolysis of brine is dehydrated by

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

Bromine is used in the preparation of

Platinum is a versatile catalyst for many processes in chemical industries. It is highly prone to be poisoned by the presence of

Which of the following, when pyrolysed, produces Perchloroethylene?

__________ of rubber decreases after its vulcanisation.

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

Calcination of gypsum produces

SO2 is bubbled through hot sugar cane juice to

During the absorption of HCl gas in water (to produce liquid HCl), the gas is kept above dew point to

A bio-catalyst produced by living cells which acts independent of the cell is called a/an

Yellow glycerine is made into white, using

Carbon disulphide is mainly used in the production of

P.T.F.E. (Poly tetra fluoro ethylene) is commercially known as

Gun powder uses

Pick out the wrong statement.

Viscose rayon is

Polycaprolactam is commercially known as

Pick out the wrong statement.

Poly Tetrafluoroethylene (P.T.F.E.) is known as

Potassium is kept & transported under

Fluorescent dyes are added in detergents to

Main product in calcium carbide-water reaction is

Producer gas consists mainly of

Phenol formaldehyde

Also checkout

The purpose of adding Na₂CO₃ to water of low alkalinity is to

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