NEET / AIIMS 2018 – Microbes in Human Welfare Lecture – 4 (Sewage treatment) 12th NCERT - Videos


1. Sewage?
2. Why sewage is a problem?
3. How to treat sewage?
4. Primary treatment
5. Secondary treatment
6. Role of microbes
7. Government initiatives



  1. Sir AGR ganga mai hum logo ki hadiya dalte ha itni Gandhi kr k rakhi ha fir kyu hum ganga JAL ka use har religious Pooja mai shudhi mai use krte ha jbki AGR socha jaye to ye pure to nhi ha……jb ye bilkul saaf ho jayegi tb hum ganga k pani ko ganga JAL ki trha use kr skte ha

  2. Sir in ncert chap. 9 table 9.1 given that pusa swarnim variety of mustard is resistant to white rust disease.Does it mean that it is resistant to Albugo Candida fungi or not.Please tell that my question is correct or wrong.?

  3. Sir as i told… But i have seen ur message now….. Sorry i couldn't reply….. But plzzz check on this sir ,"biology lecture class 11 by s. Jaiswal..
    12 biology lecture by s jaiswal….
    Plzzz check on this two…. And take a strict action against this….
    One more very important thing sir by the s jaiswal sell there lectures in the form of cd and dvd that to not free of cost…. I m not sure about it that they r selling u r video's also but plzzz do check sir….. Apki mehnat ko hum apkae commander jaya nhi honae dengae sir…… U r god to us…..

  4. Sir, I am a graduating student with botany(H) and I belongs to one of the rural areas of Bihar. The state Government's education level of Bihar is known to all. I do not have any access to college lectures due to unavailability of lecturers and professors. With the help of your lecture's video though I am not preparing for medical entrance test but yes, I am preparing for BHU PET and CSIRHRDG NET. The light of your brightness is not limited to NEET-AIIMS only but beyond this limitations.

    You are another sun of this plant for students because your light can change the way of living life.

  5. Receptor molecules transmitting signals to brain separate.
    A after initiation of response
    B before initiatiin of response
    C before completion of response
    D after completion of response


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