The process involved in converting rubber into a thin sheet or coating it on fabric is called

Question

The process involved in converting rubber into a thin sheet or coating it on fabric is called

A. Extrusion

B. Mastication

C. Calendaring

D. Vulcanisation

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Fire clay is __________ refractory material.

A. A basic

B. An acidic

C. A neutral

D. Not a

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A mineral is termed as 'ore', if

A. A metal can be economically extracted from it

B. It contains ≥ 40% metal

C. The metal present in it is costly

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

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Co-efficient of thermal expansion of glass is decreased by the addition of __________ during its manufacture.

A. CaO

B. MnO₂

C. ZnO

D. FeS

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Styrene butadiene rubber (SBR) is

A. A natural rubber

B. A synthetic polymer

C. A synthetic monomer

D. Another name of silicone rubber

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A good quality coal should have

A. Low fusion point of ash

B. High ash content

C. High sulphur content

D. None of these

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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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Pick out the endothermic reaction out of the following.

A. C+ ½O₂ = CO

B. CO + 3H₂ = CH₄ + H₂O

C. CaCO₃ = CaO + CO₂

D. CO + ½O₂ = CO₂

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A cane sugar factory having sugar production rate of 10 tons/day will produce about __________ tons/day of bagasse (after consumption by the factory for heating etc.).

A. 1

B. 10

C. 25

D. 40

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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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Oils are partially hydrogenated (not fully) to manufacture Vanaspati, because fully saturated solidified oils

A. Cause cholesterol build up and blood clotting

B. Are prone to rancid oxidation

C. Always contain some amount of nickel (as their complete removal is very difficult)

D. Have affinity to retain harmful sulphur compounds

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Vulcanisation of rubber

A. Decreases its tensile strength

B. Increases its ozone & oxygen reactivity

C. Increases its oil & solvent resistance

D. Converts its plasticity into elasticity

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The most commonly used substance to speed up the sedimentation of sewage is

A. Lime

B. Sulphuric acid

C. Chlorine

D. Sodium bisulphite

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Which of the following is the second major component of cement?

A. Al₂O₃

B. CaO

C. SiO₂

D. Fe₂O₃

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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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Chlorine gas is produced by the electrolysis of brine (NaCl solution with solid NaCl make up) in mercury electrolytic cell. Which of the following is the anodic reaction?

A. Oxidation of Na⁺ ions

B. Oxidation of Cl^- ions

C. Reduction of Na⁺ ions

D. Reduction of Cl^- ions

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The amount of benzene present in pure Benzol is about __________ percent.

A. 30

B. 50

C. 70

D. 90

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Naphthols are derivates of

A. Methyl amine

B. Naphthalene

C. Phenol

D. Xylene

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Refractory bricks burnt at very high temperature have got

A. Greater resistance to corrosion by slags

B. Less resistance to corrosion by slags

C. High spalling tendency

D. None of these

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A unit operation is exemplified by the process of

A. Reduction

B. Desorption

C. Nitration

D. Combustion

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CaSO4 . ½H₂O is known as

A. Blue vitriol

B. Plaster of Paris

C. Gypsum

D. Zeolite

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Calcination of gypsum produces

A. Plaster of Paris

B. Salt cake

C. Nitre cake

D. Lime

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High temperature carbonisation of coal produces

A. Inferior coke compared to low temperature carbonisation

B. Less of gases compared to liquid products

C. Larger quantity of tar compared to low temperature carbonisation

D. None of these

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Plaster of Paris is

A. CaSO₄. ½H₂O

B. Used for setting of broken bones

C. Both (A) and (B)

D. Same as gypsum

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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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Hydrogenation of oil takes place in a/an __________ reactor.

A. Autothermal

B. Trickle bed

C. Plug flow

D. None of these

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Bleaching of paper pulp is done with

A. Activated clay

B. Bromine

C. Chlorine or chlorine dioxide

D. Magnesium sulphite

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The process used for the manufacture of ethyl alcohol from molasses is

A. Distillation

B. Dehydration

C. Dehydrogenation

D. None of these

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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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Ordinary glass is not a/an

A. Amorphous isotropic material

B. Supercooled liquid

C. Material with sharp definite melting point

D. Electrical insulator

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In the manufacture of sulphuric acid from elemental sulphur, the following sequence of major operations is followed:

A. Furnace → converter → absorber

B. Furnace → evaporator → absorber

C. Furnace → converter → evaporator

D. Converter → furnace → absorber

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Accepted Answer

C. Calendaring

The process involved in converting rubber into a thin sheet or coating it on fabric is called

Correct Answer :

Show all Chemical Process MCQ

Related Questions

Fire clay is __________ refractory material.

A mineral is termed as 'ore', if

Co-efficient of thermal expansion of glass is decreased by the addition of __________ during its manufacture.

Styrene butadiene rubber (SBR) is

A good quality coal should have

Sodium bisulphite is used for __________ water.

Pick out the endothermic reaction out of the following.

A cane sugar factory having sugar production rate of 10 tons/day will produce about __________ tons/day of bagasse (after consumption by the factory for heating etc.).

Dacron is a

Oils are partially hydrogenated (not fully) to manufacture Vanaspati, because fully saturated solidified oils

Vulcanisation of rubber

The most commonly used substance to speed up the sedimentation of sewage is

Which of the following is the second major component of cement?

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

Chlorine gas is produced by the electrolysis of brine (NaCl solution with solid NaCl make up) in mercury electrolytic cell. Which of the following is the anodic reaction?

The amount of benzene present in pure Benzol is about __________ percent.

Naphthols are derivates of

Refractory bricks burnt at very high temperature have got

A unit operation is exemplified by the process of

CaSO4 . ½H₂O is known as

Calcination of gypsum produces

High temperature carbonisation of coal produces

Plaster of Paris is

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

Hydrogenation of oil takes place in a/an __________ reactor.

Bleaching of paper pulp is done with

The process used for the manufacture of ethyl alcohol from molasses is

Pick out the wrong statement.

Ordinary glass is not a/an

In the manufacture of sulphuric acid from elemental sulphur, the following sequence of major operations is followed:

Also checkout

The process involved in converting rubber into a thin sheet or coating it on fabric is called

Correct Answer :

Show all Chemical Process MCQ

Related Questions

Fire clay is __________ refractory material.

A mineral is termed as 'ore', if

Co-efficient of thermal expansion of glass is decreased by the addition of __________ during its manufacture.

Styrene butadiene rubber (SBR) is

A good quality coal should have

Sodium bisulphite is used for __________ water.

Pick out the endothermic reaction out of the following.

A cane sugar factory having sugar production rate of 10 tons/day will produce about __________ tons/day of bagasse (after consumption by the factory for heating etc.).

Dacron is a

Oils are partially hydrogenated (not fully) to manufacture Vanaspati, because fully saturated solidified oils

Vulcanisation of rubber

The most commonly used substance to speed up the sedimentation of sewage is

Which of the following is the second major component of cement?

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

Chlorine gas is produced by the electrolysis of brine (NaCl solution with solid NaCl make up) in mercury electrolytic cell. Which of the following is the anodic reaction?

The amount of benzene present in pure Benzol is about __________ percent.

Naphthols are derivates of

Refractory bricks burnt at very high temperature have got

A unit operation is exemplified by the process of

CaSO4 . ½H2O is known as

Calcination of gypsum produces

High temperature carbonisation of coal produces

Plaster of Paris is

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

Hydrogenation of oil takes place in a/an __________ reactor.

Bleaching of paper pulp is done with

The process used for the manufacture of ethyl alcohol from molasses is

Pick out the wrong statement.

Ordinary glass is not a/an

In the manufacture of sulphuric acid from elemental sulphur, the following sequence of major operations is followed:

Also checkout

CaSO4 . ½H₂O is known as