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CHEMICAL PROCESS

Chemical Process
Ordinary glass is not a/an

Electrical insulator
Supercooled liquid
Material with sharp definite melting point
Amorphous isotropic material

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Chemical Process
Absorption of SO₃ in 97% H₂SO₄ is

Not possible
Endothermic
Exothermic
None of these

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Chemical Process
The most reactive allotropic form of phosphorus is __________ phosphorus.

Red
Yellow
Violet
Black

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Chemical Process
Phosphoric acid is prepared from

None of these
Cryolite
Chalcopyrite
Rock phosphate

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

Electrolysis of water
Its cryogenic separation from coke oven gas
Steam reforming of naphtha
Iron-steam reaction

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