Chemical Reaction Engineering
In chamber process of sulphuric acid manufacture in industry, the gas phase oxidation of SO₂ to SO₃ is accomplished by a __________ reaction.

Non-catalytic heterogeneous
Non-catalytic homogeneous
Catalytic heterogeneous
Catalytic homogenous

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Chemical Reaction Engineering
The heat of reaction

Depends on both pressure and mechanism of reaction
Depends on the mechanism of reaction only
Is independent of the mechanism of reaction
Depends on the pressure only

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Chemical Reaction Engineering
In a zero order reaction, reactants concentration does not change with time and the

Time for completion of the reaction is independent of the initial concentration
Time for half change is half the time taken for completion of the reaction
Time for half change is independent of the initial concentration
Reaction rate is trebled when the initial concentration is trebled

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