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Chemical Process

Chemical Process
Manufacture of phthalic anhydride uses __________ as a catalyst.

Ni
Cr
Al₂O₃
V₂O₅

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Chemical Process
Mercury electrolytic cell produces 50-70% NaOH solution. Its operating temperature is __________ °C.

60-70
250-300
150-200
25

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Chemical Process
Most commonly used rubber vulcanising agent is

Sulphur
Alumina
Platinum
Bromine

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Chemical Process
Yeast is used in the manufacture of

Pasteurised milk
Pencillin
Antibiotics
Wine

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Chemical Process
Rotary kiln is not involved in the production of

None of these
Lime from limestone
Slaked lime from quick lime
Cement

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Chemical Process
__________ is used as a flux in the smelting of copper ore like chalcopyrite.

Coke breeze
Lime powder
Dolomite
Silica/quartz

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