Ethanol is prepared industrially by

Options

A. Hydration of ethylene
B. Fermentation of sugars
C. Both the above
D. None of these

Answer

C

Explanation

Hydration of alkenes
`CH_(2)=CH_(2)+overset(+)HHSoverset(-)O_(4)rarrCH_(3)-CH_(2)-HSO_(4)`
`CH_(3)-CH_(2)HSO_(4)underset(Boil)overset(H_(2)O)rarrCH_(3)-CH_(2)-OH-H_(2)SO_(4)`
Fermentation of sugars:
`C_(12)H_(22)O_(11)+H_(2)overset("Invertase")rarrunderset("Glucose")(C_(6)H_(12)O_(6))+underset("Fructose")(C_(6)H_(12)O_(6))`
`underset("Glucose of Fructose")(C_(6)H_(12)O_(6))overset("Zymase")rarr2C_(2)H_(5)OH+2CO_(2)`