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Zeigler process

A. Produces high density polyethylene

B. Produces low density polyethylene

C. Uses no catalyst

D. Employs very high pressure

Correct Answer :

A. Produces high density polyethylene


Related Questions

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Chemical name of 'alum' is

A. Barium sulphate

B. Aluminium sulphate

C. Aluminium chloride

D. Calcium sulphate

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Deaeration of water in its treatment is necessary, as it

A. Minimises its turbidity

B. Helps in controlling its taste and odour

C. Minimises its corrosiveness

D. None of these

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4

Bitterns is a/an

A. Unsaturated fat

B. Starting material for the production of iodine

C. By-product of chlor-alkali industry

D. None of these

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Wax is a

A. Mixture of glycerides

B. Mixture of esters of polyhydric alcohols excepting glycerine

C. Liquid at room temperature

D. Mixture of glycerides of fatty acids

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Which of the following impurities in feed water for high pressure boiler is the most detrimental?

A. Silica

B. Dissolved oxygen

C. Suspended salt

D. Dissolved salt

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Mercury electrolytic cells are preferred over diaphragm electrolytic cell (for production of caustic soda), as it

A. Has larger production capacity per unit cell

B. Consumes less power per ton of Cl2 produced

C. Produces high purity (70%) caustic soda directly

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

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4

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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__________ is the major constituent of the Portland cement.

A. Calcium carbonate

B. Calcium oxide

C. Tricalcium silicate

D. Calcium sulphate

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4

Pick out the correct statement.

A. A fat is converted into oil by its hydrogenation

B. There is no difference between a fat and an oil so far as its physical properties are concerned

C. All vegetable oils except coconut oil, contains fatty acids having more than sixteen carbon atoms

D. Vegetable oils are classified as drying, non-drying and semi drying oils depending upon their fatty acids content

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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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Out of the following processes of paper pulp manufacture, the maximum corrosion problem in digestion & handling equipments is encountered in the __________ process.

A. Mechanical

B. Sulphate/Kraft

C. Sulphite

D. Neutral sulphite semi-chemical

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4

Glass is

A. Mainly CaO

B. Subjected to galvanising

C. A super cooled liquid

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

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Yellow phosphorus is transported under

A. Air

B. Water

C. Nitrogen

D. Helium

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Oleum produces fumes of

A. SO2

B. H2SO4

C. SO3

D. SO2 + H2SO4

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Massecuite is a terminology used in the __________ industry.

A. Paint

B. Oil hydrogenation

C. Soap

D. Sugar

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Sodium chloride content in sea water is about __________ gms/litre.

A. 2

B. 10

C. 25

D. 50

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Which of the following is the most adverse factor challenging the choice of mercury electrolytic cell process for the production of caustic soda?

A. High cost of mercury

B. High specific gravity of mercury

C. Non-availability of high purity mercury

D. Pollution of water stream by mercury

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4

Oils and fats are converted to soap in a process called

A. Hydrogenation

B. Esterification

C. Saponification

D. None of these

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4

In industrial nomenclature, alcohol means

A. Butyl alcohol

B. Propyl alcohol

C. Ethanol

D. Methyl alcohol

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The most stable allotropic form of phosphorous is the __________ phosphorous.

A. White

B. Black

C. Yellow

D. Red

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4

Chemical formula of BHC, which is an insecticide is

A. C6H6Cl6

B. C6Cl6

C. C6H5Cl

D. C6H4Cl2

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4

Aryl benzene sulphonate (ABS) is a

A. Detergent

B. Plasticiser for unsaturated polyester

C. Starting material for the synthesis of glycerine

D. Coating ingredient for photographic film

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DDT should not be allowed to come in contact with iron (during its manufacture) to

A. Avoid its decomposition

B. Prevent sulphonation of the monochlorobenzene by the acid catalyst

C. Achieve non-hygroscopic property

D. None of these

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4

Calgon used in water treatment is chemically

A. Sodium phosphate

B. Sodium hexametaphosphate

C. Calcium phosphate

D. Tricresyl phosphate

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The chamber process is

A. Preferred over contact process for producing 98 to 100% H2SO4 and various oleums

B. Non-catalytic and operates only on pyrites

C. A batch process for directly producing high strength (98 to 100%) H2SO4

D. None of these

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Starting material for the production of butadiene in India is

A. Naphthalene

B. Benzol

C. Ethyl alcohol

D. Phthalic anhydride

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Catalytic oxidation of naphthalene produces

A. Styrene

B. Phenol

C. Phthalic anhydride

D. None of these

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__________ iron is the purest form of iron.

A. Cast

B. Wrought

C. Pig

D. High silicon

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Varnish does not contain

A. Thinner

B. Pigment

C. Both (A) & (B)

D. Neither (A) nor (B)

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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