What is ‘Secondary treatment” of sewage ? from Biolog
    • Zigya Logo

    Previous Year Papers

    Download Solved Question Papers Free for Offline Practice and view Solutions Online.

    Test Series

    Take Zigya Full and Sectional Test Series. Time it out for real assessment and get your results instantly.

    Test Yourself

    Practice and master your preparation for a specific topic or chapter. Check you scores at the end of the test.
    Advertisement

    Microbes in Human Welfare

    Multiple Choice QuestionsShort Answer Type

    51.

    Give a flow chart of sewage treatment.

    428 Views
    Answer
    Advertisement
    Zigya App

    52. What is ‘Secondary treatment” of sewage ?

    Secondary treatment is also called as biological treatment or microbial degradation. It involves the biological removal of dissolved organic matter through trickling filters, activated sludge, lagoons and anaerobic digesters in which micro-organisms are used.
    138 Views
  • Switch Icon Switch
    • Advertisement
    53. Differentiate primary sludge and activated sludge.
    301 Views
    Answer
    54. What are methanogens ? Give the examples of Methanogenic bacteria.
    183 Views
    Answer
    Advertisement
    55. Where do you find methanogens ?
    297 Views
    Answer
    56. What are Baculo viruses ? Write significance.
    178 Views
    Answer
    57.

    Draw a simple diagram to show anaerobic sludge digester.

    129 Views
    Answer
    58. Give the full form of Bt. Name the insects killed by it.
    133 Views
    Answer
    Advertisement

    Multiple Choice QuestionsOne Word Answers

    59. Name the protein produced by B. thuringiensis.
    103 Views
    Answer

    Multiple Choice QuestionsShort Answer Type

    60. Name five micro-organisms used as a biofertilizer..
    118 Views
    Answer
    Advertisement
    Flag Popup Icon
    Flag it
    Submit
    Flag Popup Icon
    Switch to
    flexipad
    Share It Icon
    Share it
    Share It
    Share it