Question

MPN indicates

• A. Water pollution
• B. Atmospheric pollution
• C. Faecal pollution
• D. Industrial pollution

Answer 1

The correct option is A Water pollution

Most Probable Number (MPN) is a method used to estimate the concentration of viable microorganisms in a sample by means of replicate liquid broth growth in ten-fold dilutions. MPN is most commonly applied for quality testing of water i.e to ensure whether the water is safe or not in terms of bacteria present in it.

So the correct answer is 'Water pollution'.