A) Penicillium notanum
B) Rhizopus spp
C) Aspergillus niger
D) Mucor spp.
Correct Answer: C
Solution :
: Lactic acid, acetic acid, citric acid, gluconic acid, and fumaric acid are manufactured by using microbes such as Lactobacillus, Acetobacter bacilli, Aspergillus niger, Acetobacter aceti and Rhizopus nigricans respectively. Citric acid is used in medicine, dyeing, mirror silvering, manufacture of ink, flavouring etc.
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