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Chemical Process

Chemical Process
Pig iron is produced by blast furnaces in India using mostly the iron ore named

Hematite
Chalcopyrite
Siderite
Magnetite

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Chemical Process
__________ glass is used for the manufacture of optical glass.

Pyrex
Flint
Soda
Crooke's

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Chemical Process
Main constituents of natural rubber is

Polyisoprene
Polystyrene
Polybutadiene
Polychloroprene

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Chemical Process
Phthalic anhydride is used

As plasticisers
For making nylon-6
In making PVC
In insecticides manufacture

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Chemical Process
The compressive strength of cement should not be less than about 110Kg/cm² after three days & not less than 170Kg/cm² after seven days. The fineness of an ordinary cement as determined by turbidimetric method should be about __________ cm²/gm.

800
4000
8500
1600

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Chemical Process
Which of the following is not an antibiotic?

Penicillin
Streptomycin
Tetracyclin
Quinine

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