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Question

Choose incorrect option:-
  1. Ethanol is obtained by fermentation of sugar in presence of enzyme zymase which converts to glucose and glucose is followed by fermentation with enzyme invertase.
  2. Wood spirit is produced by catalytic hydrogenation of carbon monoxide at high pressure and temperature and in the presence of ZnO – Cr2O3 catalyst.
  3. Phenol is converted to benzene on heating with zinc dust.
  4. Oxidation of phenol with sodium dichromate in presence of sulphuric acid produces a conjugated diketone known as benzoquinone


Solution

The correct option is A Ethanol is obtained by fermentation of sugar in presence of enzyme zymase which converts to glucose and glucose is followed by fermentation with enzyme invertase.

Ethanol is obtained by fermentation of sugar in presence of enzyme invertase which is converted to glucose and glucose is then treated with enzyme zymase.

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