CBSE Class 8 Chemistry Help

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  1. ramana reddy

    Why does a farmer rotate crops in a field?

    ramana reddy, Jul 3, 2012
    Replies:
    1
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    4,623
    philiprambo
    Jul 19, 2012
  2. ramana reddy

    Name the seasons for cultivating crops in India.

    ramana reddy, Jul 3, 2012
    Replies:
    0
    Views:
    882
    ramana reddy
    Jul 3, 2012
  3. ramana reddy

    List some important requirements for a field needed to grow plants.

    ramana reddy, Jul 3, 2012
    Replies:
    0
    Views:
    687
    ramana reddy
    Jul 3, 2012
  4. ramana reddy

    What steps are taken to protect crops from pests?

    ramana reddy, Jul 3, 2012
    Replies:
    0
    Views:
    818
    ramana reddy
    Jul 3, 2012
  5. ramana reddy

    How does fumigation differ from spraying?

    ramana reddy, Jul 3, 2012
    Replies:
    0
    Views:
    2,022
    ramana reddy
    Jul 3, 2012
  6. ramana reddy

    How is Field Fallow helpful in replenishing the soil?

    ramana reddy, Jul 3, 2012
    Replies:
    0
    Views:
    1,137
    ramana reddy
    Jul 3, 2012
  7. ramana reddy

    Why should the harvested grains be protected from moisture?

    ramana reddy, Jul 3, 2012
    Replies:
    0
    Views:
    1,928
    ramana reddy
    Jul 3, 2012
  8. ramana reddy

    How enlightened management of land is essential for sustaining good crop yields year after year?

    ramana reddy, Jul 3, 2012
    Replies:
    0
    Views:
    603
    ramana reddy
    Jul 3, 2012
  9. ramana reddy

    What would happen to the stocks of nutrients if we grow plants in the same soil year after year?

    ramana reddy, Jul 3, 2012
    Replies:
    0
    Views:
    650
    ramana reddy
    Jul 3, 2012
  10. ramana reddy

    How does a farmer store the grains?

    ramana reddy, Jul 3, 2012
    Replies:
    0
    Views:
    807
    ramana reddy
    Jul 3, 2012
  11. ramana reddy

    What is the need for storage of food materials?

    ramana reddy, Jul 3, 2012
    Replies:
    0
    Views:
    650
    ramana reddy
    Jul 3, 2012
  12. ramana reddy

    How is winnowing done?

    ramana reddy, Jul 3, 2012
    Replies:
    0
    Views:
    856
    ramana reddy
    Jul 3, 2012
  13. ramana reddy

    How has the uses of fertilisers improved crop production?

    ramana reddy, Jul 3, 2012
    Replies:
    0
    Views:
    570
    ramana reddy
    Jul 3, 2012
  14. ramana reddy

    How worms and microbes are friends of a farmer?

    ramana reddy, Jun 30, 2012
    Replies:
    0
    Views:
    1,097
    ramana reddy
    Jun 30, 2012
  15. ramana reddy

    Why the pesticides be used with great care?

    ramana reddy, Jun 30, 2012
    Replies:
    0
    Views:
    755
    ramana reddy
    Jun 30, 2012
  16. ramana reddy

    What is a Scare-Crow and why is it used for?

    ramana reddy, Jun 30, 2012
    Replies:
    0
    Views:
    573
    ramana reddy
    Jun 30, 2012
  17. ramana reddy

    How are the pests controlled in a crop field?

    ramana reddy, Jun 30, 2012
    Replies:
    0
    Views:
    792
    ramana reddy
    Jun 30, 2012
  18. ramana reddy

    How can we save our crops from these pests?

    ramana reddy, Jun 30, 2012
    Replies:
    0
    Views:
    689
    ramana reddy
    Jun 30, 2012
  19. ramana reddy

    Why do we need to add manure to the soil?

    ramana reddy, Jun 30, 2012
    Replies:
    0
    Views:
    1,039
    ramana reddy
    Jun 30, 2012
  20. ramana reddy

    Why is soil turned and loosened before seeds are sown?

    ramana reddy, Jun 30, 2012
    Replies:
    0
    Views:
    5,577
    ramana reddy
    Jun 30, 2012
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