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NEET2011ZoologyMicrobes in Human WelfareActual

Which of the following statements is correct?

Options

  1. AAspergillus niger is used for producing cyclosporin A.
  2. BActivated sludge is digested by aerobic bacteria to produce marsh gas.
  3. CFleming, Chain & Florey were awarded with Nobel Prize for discovering penicillin.
  4. DBOD is amount of oxygen produced by bacteria on decomposition.

Correct answer

C. Fleming, Chain & Florey were awarded with Nobel Prize for discovering penicillin.

Step-by-step solution

Aspergillus niger is used for commercial and industrial production of certain chemicals like citric acid. Activated sludge is digested by anaerobic bacteria to produce marsh gas. BOD is amount of oxygen required by bacteria for decomposition.

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