Chemical Process
Temperature during hydrogenation of oil should not be more than 200°C, otherwise it will result in

All of these
Hydrogen embrittlement
Sintering of porous catalyst
Pyrolysis of oil

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Chemical Process
During the manufacture of sulphuric acid, the temperature of molten sulphur is not increased beyond 160°C, as

None of these
It is very corrosive at elevated temperature
It decomposes on further increasing the temperature
Its viscosity is not reduced on further heating (hence pressure drop on pumping it, cannot be further reduced)

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