Alum is commercially produced from

Which of the following is not produced commercially from sea water?

A

Magnesium & potassium compounds

B

Common salt

C

Bromine

D

Iodine

Petroleum coke is commercially produced by the __________ process.

A

Hydrocracking

B

Visbreaking

C

Fluid catalytic cracking

D

Delayed coking

Bleaching powder (chemically known as calcium chloro hypochlorite) is commercially produced by the action of chlorine on

A

Slaked lime

B

Soda lime

C

Calcium perchlorate

D

None of these

Styrene (a monomer for the production of polystyrene) is commercially produced by

A

Catalytic dehydrogenation of ethyl benzene

B

Dehydration of ethyl alcohol followed by hydrogenation

C

Reacting ethylene oxide with acetal-dehyde

D

Fermentation of starch

Commercially ethylene is produced from naphtha by

A

Catalytic cracking

B

Catalytic dehydrogenation

C

Pyrolysis

D

Hydrocracking

Hydrogen gas is not produced commercially (for nitrogeneous fertiliser manufacture) by

A

Iron-steam reaction

B

Electrolysis of water

C

Steam reforming of naphtha

D

Its cryogenic separation from coke oven gas

Styrene which is a monomer for the production of polystyrene, is commercially produced by the

A

Catalytic dehydrogenation of ethyl benzene

B

Dehydration of ethyl alcohol followed by hydrogenation

C

Reacting ethylene oxide with acetal-dehyde

D

Fermentation of starch

Singular of alum' is-

A

alumni

B

alumny

C

alumnus

D

alumnas

The alum, when added as a coagulant in water

A

Does not require alkalinity in water for flocculation

B

Does not affect pH value of water

C

Increases pH value of water

D

Decreases pH value of water

Starting raw material for the manufacture of alum is

A

Alumina

B

Gypsum

C

Bauxite

D

Ammonium bicarbonate

Alum is commercially produced from

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