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  1. khizer shahab

    Biology; Chemistry; Physics: Post your doubts here!

    in condensation a simple molecule is also formed as by product like H2O in additon only one product forms
  2. khizer shahab

    Biology; Chemistry; Physics: Post your doubts here!

    26 C because co needs one more oxygen!!
  3. khizer shahab

    Biology; Chemistry; Physics: Post your doubts here!

    8 A
  4. khizer shahab

    Biology; Chemistry; Physics: Post your doubts here!

    needs lower energy therefore the time required to gain energy becomes less thus reaction speeds up !!
  5. khizer shahab

    Biology; Chemistry; Physics: Post your doubts here!

    a hydrogen atom at carbon can slide to side from bottom or to top , isomer is made in such a way that even if they slide they cannot make the same position !! hoped understand !!
  6. khizer shahab

    Biology; Chemistry; Physics: Post your doubts here!

    correct and thanks:)
  7. khizer shahab

    Biology; Chemistry; Physics: Post your doubts here!

    thnaks for 22 but..............23's answer in marking scheme is D ..!! but WHY?
  8. khizer shahab

    Biology; Chemistry; Physics: Post your doubts here!

    q28??
  9. khizer shahab

    Biology; Chemistry; Physics: Post your doubts here!

    w salam i have been on xtreme but was not posting my doubts here much :D same here 23 a or b for 22 didnt get it !:p
  10. khizer shahab

    Biology; Chemistry; Physics: Post your doubts here!

    http://www.xtremepapers.com/papers/CIE/Cambridge International O Level/Chemistry (5070)/5070_s10_qp_11.pdf q22 wid explanation !! q23 also
  11. khizer shahab

    Biology; Chemistry; Physics: Post your doubts here!

    oct/nov 2009 reply fast
  12. khizer shahab

    Biology; Chemistry; Physics: Post your doubts here!

    A student takes three lenses from a drawer labelled ‘convex lenses: f = 15 cm’. (a) Describe, with the aid of a labelled diagram, how the student quickly checks that the lenses have the correct focal length. please just explain without diagram !!!
  13. khizer shahab

    sociology post your doubts here!!

    examples of how social control serves the interests of the powerful groups in society will be advanced. For example, answers may discuss how the law protects property and how ‘white collar’ crime has perhaps not been focused on by the police to the same extent compared to other crimes. A...
  14. khizer shahab

    sociology post your doubts here!!

    its your choices to attempt any three question out of six question from section b to c ..... that's one of the reason of its popularity !!;)
  15. khizer shahab

    Biology; Chemistry; Physics: Post your doubts here!

    practice past papers !!!,, revising and learning its notes several times won't earn you much..!!
  16. khizer shahab

    Biology; Chemistry; Physics: Post your doubts here!

    its obvious yar first two only !!
  17. khizer shahab

    Biology; Chemistry; Physics: Post your doubts here!

    its option A bcuz ,emf does depend upon resistance i.e v=ir !!!
  18. khizer shahab

    sociology post your doubts here!!

    in karachi ..from urdu bazar , i don't know about other cities !!!
  19. khizer shahab

    sociology post your doubts here!!

    sorry but i never experience at glancing those book !!
  20. khizer shahab

    sociology post your doubts here!!

    i used ken browne's introduction to sociology but i hace heared that the book of letts series is much better !!
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