Question

Crude sugar on fermentation by aspergillus niger gives
(a) acetic acid
(b) acetaldehyde (c) citric acid
(d) ethyl alcoho​

Answer 1

Answer:

critic acid ( c)

I HOPE ITS HELPFUL FOR YOU....

THNX FOR ASKING...

Answer 2

Aspergillus niger ferments the crude sugar to yield citric acid. Thus, option (c) is correct.

• Citric acid is an organic compound with the carboxylic acid functional group. It is a tricarboxylic acid with one hydroxyl group.
• The chemical formula of citric acid is $(HOOCCH_{2})2 (COOH)COH$.
• CItric acid has many industrial uses as a chelating agent, flavoring agent, and acidifier.
• It can be extracted from naturally occurring substances or can be synthesized artificially.
• The synthetic methods of citric acid production involves microbial fermentation and chemical reaction.
• The fungus, Aspergillus niger is used to produce citric acid by fermentation method.