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

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

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Chemical Process
Wax is a

Mixture of glycerides
Liquid at room temperature
Mixture of glycerides of fatty acids
Mixture of esters of polyhydric alcohols excepting glycerine

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

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

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