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Chemical Process

Chemical Process
Sulphur removal by heating of pyrite ore in presence of air is called its

Reduction
Smelting
Roasting
Calcination

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Chemical Process
Helium is produced on commercial scale from

None of these
Air
Coke oven gas
Natural gas

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

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

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Chemical Process
Pick out the exothermic reaction out of the following:

MgCO₃ = MgO + CO₂
CaC₂ + H₂O = Ca(OH)₂ + C₂H₂
C + H₂O = CO + H₂
All of these

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Chemical Process
Thermal pyrolysis of ethylene dichloride produces

Ethanol amine
Ethylene oxide
Trichloroethylene
Vinyl chloride

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Chemical Process
Catalyst used in the oxidation of benzene to produce maleic anhydride is

Pt
Cr
V₂O₅
Ni

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MORE MCQ ON Chemical Process

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