Pick out the wrong statement.

Question

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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Comment

Main constituent of limestone is

A. CaCO₃

B. MgCO₃

C. Na₂CO₃

D. CaSO₄

Discuss this answer

Common salt is generally not produced commonly by __________ method from brine.

A. Freeze drying

B. Electrolytic

C. Solar evaporation

D. Vacuum evaporation

Discuss this answer

Penicillin is made employing __________ fermentation process.

A. Continuous

B. Aerobic batch

C. Anaerobic batch

D. None of these

Discuss this answer

A mixture of chlorine & sodium bromide acts as a/an

A. Insecticides

B. Analgesic drug

C. Fire retardant

D. Hydrogenation catalyst

Discuss this answer

What products do we get on electrolysis of saturated brine using steel cathode and graphite anode in an electrolytic cell?

A. Cl₂ & Na

B. Cl₂ & H₂

C. O₂ & H₂

D. Cl₂, H₂ & NaOH solution

Discuss this answer

Nitrogen is an essential component of

A. Mineral salts

B. Carbohydrates

C. Fats

D. Proteins

Discuss this answer

In an integrated steel plant, NH3 present in coke oven gas is normally recovered as

A. (NH₄)₂SO₄

B. NH₄Cl

C. (NH₄)₂ NO₃

D. Liquid NH₃

Discuss this answer

Which of the following is an ore of iron?

A. Galena

B. Chalcopyrite

C. Hematite

D. Bauxite

Discuss this answer

Essential oils are usually obtained using

A. Steam distillation

B. Extractive distillation

C. Solvent extraction

D. Leaching

Discuss this answer

Nylon-6 as compared to Nylon-66 is having higher

A. Hardness

B. Abrasion/resistance

C. Melting point

D. None of these

Discuss this answer

In contact process, SO₃ is absorbed in 97% H₂SO₄ and not in water, because

A. SO₃ gas is sparingly soluble in water

B. Water forms an acid mist, which is difficult to absorb

C. The purity of acid is affected

D. Scale formation in the absorber is to be avoided

Discuss this answer

Ordinary glass is not a/an

A. Amorphous isotropic material

B. Supercooled liquid

C. Material with sharp definite melting point

D. Electrical insulator

Discuss this answer

Viscose rayon is

A. Cellulose nitrate

B. Regenerated cellulose nitrate

C. Regenerated cellulose acetate

D. None of these

Discuss this answer

Esterification reaction

A. Produces soap

B. Is reversible

C. Is a reaction between an alcohol and an organic acid

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

Discuss this answer

During the manufacture of sulphuric acid, the temperature of molten sulphur is not increased beyond 160°C, as

A. It is very corrosive at elevated temperature

B. Its viscosity is not reduced on further heating (hence pressure drop on pumping it, cannot be further reduced)

C. It decomposes on further increasing the temperature

D. None of these

Discuss this answer

Plasticisers are added to paints to

A. Make it corrosion resistant

B. Make glossy surface

C. Give elasticity & prevent cracking of the film

D. Increase atmospheric oxidation

Discuss this answer

Oxidation of ortho-xylene in presence of __________ catalyst is done to produce phthalic anhydride on commercial scale.

A. Nickel

B. Vanadium

C. Alumina

D. Iron

Discuss this answer

Percentage of glycerine present in the spent lye obtained during soap manufacture is about

A. 0.5

B. 5

C. 20

D. 35

Discuss this answer

Shrinkage volume in cement setting does not depend upon the

A. Sand to cement ratio

B. Water to cement ratio

C. Ambient temperature fluctuation

D. Drying period

Discuss this answer

Styrene butadiene rubber (SBR) is

A. A natural rubber

B. A synthetic polymer

C. A synthetic monomer

D. Another name of silicone rubber

Discuss this answer

Nitric acid is not used in the manufacture of

A. Detergents

B. Fertilisers

C. Aqua regia

D. Explosives

Discuss this answer

Catalyst used in the oxidation of benzene to produce Maleic anhydride is

A. V₂O₅

B. Pt

C. Ni

D. Cr

Discuss this answer

Nicotine is

A. A volatile alkaloid

B. Obtained by treating by-products of the tobacco processing industry

C. Both (A) and (B)

D. Neither (A) nor (B)

Discuss this answer

Cooking liquor in case of sulphite process is

A. Sodium sulphite and sodium bisulphite

B. Magnesium sulphite and free SO2 in acid medium

C. Magnesium sulphate and magnesium bicarbonate

D. None of these

Discuss this answer

Ultimate analysis of coal determines its __________ content.

A. Carbon, hydrogen, nitrogen & sulphur

B. Carbon, ash, sulphur & nitrogen

C. Carbon, sulphur, volatile matter & ash

D. Carbon, volatile matter, ash & moisture

Discuss this answer

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

Discuss this answer

Heating of __________ to 120°C, produces plaster of paris.

A. Blue vitriol

B. Gypsum

C. Calcium silicate

D. Calcium sulphate

Discuss this answer

Very dilute solutions are generally used in fermentation reactions for which the optimum temperature range is __________ °C.

A. -5 to 0

B. 5 to 10

C. 30 to 50

D. 75 to 80

Discuss this answer

Glycerine is recovered from lye by

A. Evaporation followed by vacuum distillation

B. Liquid extraction technique

C. Extractive distillation technique

D. None of these

Discuss this answer

Which of the following is a constituent of vinegar?

A. Around 10% alcohol

B. Around 1% acetic acid

C. Both (A) and (B)

D. Neither (A) nor (B)

Discuss this answer

Accepted Answer

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

Pick out the wrong statement.

Correct Answer :

Show all Chemical Process MCQ

Related Questions

Main constituent of limestone is

Common salt is generally not produced commonly by __________ method from brine.

Penicillin is made employing __________ fermentation process.

A mixture of chlorine & sodium bromide acts as a/an

What products do we get on electrolysis of saturated brine using steel cathode and graphite anode in an electrolytic cell?

Nitrogen is an essential component of

In an integrated steel plant, NH3 present in coke oven gas is normally recovered as

Which of the following is an ore of iron?

Essential oils are usually obtained using

Nylon-6 as compared to Nylon-66 is having higher

In contact process, SO₃ is absorbed in 97% H₂SO₄ and not in water, because

Ordinary glass is not a/an

Viscose rayon is

Esterification reaction

During the manufacture of sulphuric acid, the temperature of molten sulphur is not increased beyond 160°C, as

Plasticisers are added to paints to

Oxidation of ortho-xylene in presence of __________ catalyst is done to produce phthalic anhydride on commercial scale.

Percentage of glycerine present in the spent lye obtained during soap manufacture is about

Shrinkage volume in cement setting does not depend upon the

Styrene butadiene rubber (SBR) is

Nitric acid is not used in the manufacture of

Catalyst used in the oxidation of benzene to produce Maleic anhydride is

Nicotine is

Cooking liquor in case of sulphite process is

Ultimate analysis of coal determines its __________ content.

Pick out the wrong statement.

Heating of __________ to 120°C, produces plaster of paris.

Very dilute solutions are generally used in fermentation reactions for which the optimum temperature range is __________ °C.

Glycerine is recovered from lye by

Which of the following is a constituent of vinegar?

Also checkout

Pick out the wrong statement.

Correct Answer :

Show all Chemical Process MCQ

Related Questions

Main constituent of limestone is

Common salt is generally not produced commonly by __________ method from brine.

Penicillin is made employing __________ fermentation process.

A mixture of chlorine & sodium bromide acts as a/an

What products do we get on electrolysis of saturated brine using steel cathode and graphite anode in an electrolytic cell?

Nitrogen is an essential component of

In an integrated steel plant, NH3 present in coke oven gas is normally recovered as

Which of the following is an ore of iron?

Essential oils are usually obtained using

Nylon-6 as compared to Nylon-66 is having higher

In contact process, SO3 is absorbed in 97% H2SO4 and not in water, because

Ordinary glass is not a/an

Viscose rayon is

Esterification reaction

During the manufacture of sulphuric acid, the temperature of molten sulphur is not increased beyond 160°C, as

Plasticisers are added to paints to

Oxidation of ortho-xylene in presence of __________ catalyst is done to produce phthalic anhydride on commercial scale.

Percentage of glycerine present in the spent lye obtained during soap manufacture is about

Shrinkage volume in cement setting does not depend upon the

Styrene butadiene rubber (SBR) is

Nitric acid is not used in the manufacture of

Catalyst used in the oxidation of benzene to produce Maleic anhydride is

Nicotine is

Cooking liquor in case of sulphite process is

Ultimate analysis of coal determines its __________ content.

Pick out the wrong statement.

Heating of __________ to 120°C, produces plaster of paris.

Very dilute solutions are generally used in fermentation reactions for which the optimum temperature range is __________ °C.

Glycerine is recovered from lye by

Which of the following is a constituent of vinegar?

Also checkout

In contact process, SO₃ is absorbed in 97% H₂SO₄ and not in water, because