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Recent content by raynalist

  1. R

    Chemistry: Post your doubts here!

    the process is endothermic.
  2. R

    Chemistry: Post your doubts here!

    Hiii. plz can you help me to answer this question: Explain in bond energy terms why the Haber process involves a high activation energy.
  3. R

    Maths, Addmaths and Statistics: Post your doubts here!

    Hi please can you help me to solve this relative velocity problem: An aircraft is flying due south at 350kmper hour.The wind is blowing at 70km per hour from the direction x degrees,where x degrees is acute.Given that the pilot is steering the aircraft in the direction 170 degrees,find (1)the...
  4. R

    Biology; Chemistry; Physics: Post your doubts here!

    Grafting involves joining a portion of a certain plant to the corresponding part of another plant of a closely related variety.For e.g:grafting a variety of rose onto another rose variety. The variety which is desirable is called the scion.This is a piece of the rose system bearing buds but no...
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    Biology; Chemistry; Physics: Post your doubts here!

    learn all experiments you have done.work out the previous past exams.most popular question are on plant nutrition,blood,eye,genetics
  6. R

    Biology; Chemistry; Physics: Post your doubts here!

    negative acceleration means deceleration.
  7. R

    and same to u also

    and same to u also
  8. R

    thank you

    thank you
  9. R

    Biology; Chemistry; Physics: Post your doubts here!

    Excretion is the removal of waste products of metabolism and toxic material from living organism.These waste products are formed and absorbed within the cells. Egestion is the removal of undigested remains(faeces)from the alimentary canal via the anus.These substances are notformed within the...
  10. R

    Biology; Chemistry; Physics: Post your doubts here!

    in brief only.Their properties and how they decay
  11. R

    Biology; Chemistry; Physics: Post your doubts here!

    hi plz can u explain me about radioactive decay of alpha beta and gamma particles
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