2. Sample Papers
  3. 12th Class
  4. Biology

12th Class Biology Sample Paper Biology - Sample Paper-9

  • question_answer
    Write about production and use of lactic acid, citric acid, acetic acid.

    Answer:

    Present Bacteria Starting Use
    Lactic acid Lactobacillus milk sugar Curd, cheese production
    Citric acid Aspergillus niger fruit sugar Medicine, food preservation
    Acetic acid Clostridium acetobutylicum wine and beer Food preservative
     


You need to login to perform this action.
You will be redirected in 3 sec spinner