__________ are added in lacquers to remove film brittleness and to improve adhereness.

Question

__________ are added in lacquers to remove film brittleness and to improve adhereness.

A. Film forming materials

B. Plasticisers

C. Diluents

D. Solvents

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Comment

Polyvinyl chloride (PVC) is

A. A thermosetting material

B. A condensation polymerisation product

C. Made by employing emulsion polymerisation

D. None of these

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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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Which of the following is not responsible for causing permanent hardness of water?

A. Ca(HCO₃)₂

B. CaCl₂

C. MgCl₂

D. None of these

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Silicone is a/an

A. Thermoplastic

B. Inorganic polymer

C. Monomer

D. None of these

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The main use of activated carbon in water treatment is to control

A. Bacterial growth

B. Taste and odour

C. Turbidity

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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The product obtained on mixing calcium oxide with water is called

A. Quicklime

B. Slaked lime

C. Milk of lime

D. None of these

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Naphthalene is removed from coke oven gas by

A. Adsorbing on palladium

B. Absorbing in ethanolamine

C. Scrubbing with wash oil

D. Passing it through electrostatic precipitator

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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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The major constituent of black liquor generated during paper manufacture is sodium

A. Sulphate

B. Carbonate

C. Hydroxide

D. Bi-carbonate

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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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Black liquor is converted into white liquor by

A. Evaporation and burning the concentrate followed by causticisation of products

B. Multi-effect evaporation only

C. Selective liquid extraction

D. Extractive distillation

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Mineral oils (e.g. petroleum oils) are preferred over fatty oils (e.g. mustard oil, ghee, tallow, palm oil, olive oil etc.) as a lubricant due to its

A. Poor oxidation stability and high gum forming tendency

B. Greater tendency of decomposition at elevated temperature

C. Hydrolysis tendency in presence of water

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

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__________ is used as a flux in the extraction of iron from iron ore (haematite) in blast furnace.

A. Bauxite

B. Limestone

C. Quartz

D. Manganese

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Zeolite removes both temporary as well as permanent hardness of water by precipitating calcium and magnesium present in water as insoluble zeolites. Used zeolite is regenerated by flushing with the solution of

A. Calcium sulphate

B. Sodium chloride

C. Sodium sulphate

D. Magnesium chloride

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__________ is produced by the dehydrogenation of ethyl benzene.

A. Styrene

B. Ethyl alcohol

C. Cumene

D. Phenol

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__________ is the major constituent of the Portland cement.

A. Calcium carbonate

B. Calcium oxide

C. Tricalcium silicate

D. Calcium sulphate

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__________ are added in lacquers to remove film brittleness and to improve adhereness.

A. Film forming materials

B. Plasticisers

C. Diluents

D. Solvents

Discuss this answer

Industrial production of chloroform requires acetone and

A. Phosgene

B. Calcium hypochlorite

C. Chlorine

D. Ammonium chloride

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Setting of plaster of Paris is accompanied with

A. Hydration

B. Dehydration

C. Hydrolysis

D. Loss of CO₂

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__________ is produced using molasses as the starting raw material.

A. Methyl alcohol

B. Ethyl alcohol

C. Benzol

D. Dimethyl ether

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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)

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Claude process of gas liquefaction employs

A. Merely compression of gas beyond its critical pressure

B. Joule-Thomson expansion cooling

C. Heat exchange with colder stream

D. Adiabatic expansion against a piston or in a turbine

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Pick out the wrong statement.

A. Cold rubber (SBR) is superior as compared to hot rubber (SBR)

B. Polymerisation temperature can modify the properties of SBR

C. Production of cold SBR employs lower pressure as compared to that of hot SBR

D. None of these

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An oil is converted into fat by its

A. Hydrogenation

B. Hydrolysis

C. Hydrocracking

D. Hydration

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__________ process is used for producing soda ash.

A. Chamber

B. Chance

C. Tromp

D. Solvay

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Phthalic anhydride is produced by the oxidation of

A. Naphthalene

B. Benzene

C. Toluene

D. Aniline

Discuss this answer

Helium is produced on commercial scale from

A. Air

B. Natural gas

C. Coke oven gas

D. None of these

Discuss this answer

Sea weeds are an important source of

A. Fluorine

B. Chlorine

C. Bromine

D. Iodine

Discuss this answer

Ethylene oxide is produced by oxidation of ethylene in presence of AgO catalyst at

A. 1 atm & 100°C

B. 5 atm & 275°C

C. 100 atm & 500°C

D. 50 atm & 1000°C

Discuss this answer

Accepted Answer

B. Plasticisers

__________ are added in lacquers to remove film brittleness and to improve adhereness.

Correct Answer :

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Related Questions

Polyvinyl chloride (PVC) is

__________ of rubber decreases after its vulcanisation.

Which of the following is not responsible for causing permanent hardness of water?

Silicone is a/an

The main use of activated carbon in water treatment is to control

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

The product obtained on mixing calcium oxide with water is called

Naphthalene is removed from coke oven gas by

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

The major constituent of black liquor generated during paper manufacture is sodium

Vulcanisation of rubber

Black liquor is converted into white liquor by

Mineral oils (e.g. petroleum oils) are preferred over fatty oils (e.g. mustard oil, ghee, tallow, palm oil, olive oil etc.) as a lubricant due to its

__________ is used as a flux in the extraction of iron from iron ore (haematite) in blast furnace.

Zeolite removes both temporary as well as permanent hardness of water by precipitating calcium and magnesium present in water as insoluble zeolites. Used zeolite is regenerated by flushing with the solution of

__________ is produced by the dehydrogenation of ethyl benzene.

__________ is the major constituent of the Portland cement.

__________ are added in lacquers to remove film brittleness and to improve adhereness.

Industrial production of chloroform requires acetone and

Setting of plaster of Paris is accompanied with

__________ is produced using molasses as the starting raw material.

Which of the following is a constituent of vinegar?

Claude process of gas liquefaction employs

Pick out the wrong statement.

An oil is converted into fat by its

__________ process is used for producing soda ash.

Phthalic anhydride is produced by the oxidation of

Helium is produced on commercial scale from

Sea weeds are an important source of

Ethylene oxide is produced by oxidation of ethylene in presence of AgO catalyst at

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