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Chemical Process

Chemical Process
Oxidation of ortho-xylene in presence of __________ catalyst is done to produce phthalic anhydride on commercial scale.

Nickel
Iron
Alumina
Vanadium

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Chemical Process
Impurities present in brine is normally removed by treatment with

All of these
Lime and soda ash
Lime, ammonia and carbon
NH₃ and CO₂

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Chemical Process
Esterification reaction produces

Vanaspati
Detergent
Soap
Mercaptans

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Chemical Process
Phosphoric acid is prepared from

None of these
Rock phosphate
Chalcopyrite
Cryolite

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Chemical Process
Chemical name of soda ash is

Sodium bicarbonate
Sodium thiosulphate
Potassium carbonate
None of these

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

Silica
Dissolved oxygen
Dissolved salt
Suspended salt

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