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  1. S

    A2 Physics | Post your doubts here

    http://www.xtremepapers.com/papers/CIE/Cambridge%20International%20A%20and%20AS%20Level/Physics%20(9702)/9702_s11_qp_41.pdf Q9 b ii..please explain!!
  2. S

    A level Biology: Post your doubts here!

    okay i just have a small confusion regarding Section B. my answers are really short. they do cover all the points in the marking scheme but are hardly half a page. specially the 8 mark question. is it okay? also.. the ms has short points. are they sufficient enough to gain full marks or do we...
  3. S

    Lets Solve A's chem MCQ paper together.

    thanks a million! :)
  4. S

    Lets Solve A's chem MCQ paper together.

    THANK YOU SO MUCH !! im so grateful to you! however, i really dont understand 1..could you plz explain it a bit more? and also 25..
  5. S

    A level Biology: Post your doubts here!

    does anyone have good notes on selection and evolution?
  6. S

    A level Biology: Post your doubts here!

    Explain, using named examples, how mutation can affect phenotype. [7].this is from June 2006. can some one please give me a note on down's syndrome as it is required for this answer as stated in marking scheme...
  7. S

    Lets Solve A's chem MCQ paper together.

    COME ON GUYS. Help would be highly appreciated!!
  8. S

    A2 Biology | Post your doubts here

    also in the question, Describe the process of oxidative phosphorylation in the mitochondrion. [9] from June 08.. i dont understand how to connect the chemiosmotic theory that is concerned with production of ATP to the electron being transferred to oxygen and being reduced to water when...
  9. S

    A2 Biology | Post your doubts here

    okay i just have a small confusion regarding Section B. my answers are really short. they do cover all the points in the marking scheme but are hardly half a page. specially the 8 mark question. is it okay? also.. the ms has short points. are they sufficient enough to gain full marks or do we...
  10. S

    Lets Solve A's chem MCQ paper together.

    i really need help with these questions.. 1,4,8,15,16,25,26,29,36.. in some of them i do have an explanation for my answer but apparently they:re wrong so if someone could please correct me! in 16 isnt the major product of the electrolysis of brine, NaOH? 1n 25 (2.76 - 2.07)/2.76 x 100 gives us...
  11. S

    Mathematics: Post your doubts here!

    http://www.xtremepapers.com/papers/CIE/Cambridge%20International%20A%20and%20AS%20Level/Mathematics%20(9709)/9709_s11_qp_61.pdf on Q3 second part..how do we calculate the expected value?? PLEASE HELP!!
  12. S

    Mathematics: Post your doubts here!

    http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_w09_qp_61.pdf Q5..permutations and combinations.. Please explain it. also...
  13. S

    Lets Solve A's chem MCQ paper together.

    yes please. chem mcq"s are crazy.. however, why skype? i mean solve the paper on your own and then post your difficulties here. and we all can help each other out.
  14. S

    AS and A Level Physics Coursebook [CD-ROM] (download)

    Can someome please tell me where can i get this book online? as in e-book sort of a thing
  15. S

    Chemistry: Post your doubts here!

    in Q5 part b..why does the marking scheme give positive E values? im getting negative.. http://www.xtremepapers.com/papers/... AS Level/Chemistry (9701)/9701_w10_qp_43.pdf http://www.xtremepapers.com/papers/...d AS Level/Chemistry (9701)/9701_s08_qp_4.pdf Q2 a iii.. how do we balance the...
  16. S

    Chemistry: Post your doubts here!

    http://www.xtremepapers.com/papers/CIE/Cambridge%20International%20A%20and%20AS%20Level/Chemistry%20(9701)/9701_w04_qp_4.pdf in Q2 part e.. isnt the ratio of electrons to hydrogen 2:1.. hence when we get mol of electron by 345600/96500 we divide it by 2 to get get mol of hydrogen wich will also...
  17. S

    Chemistry: Post your doubts here!

    http://www.xtremepapers.com/papers/CIE/Cambridge%20International%20A%20and%20AS%20Level/Chemistry%20(9701)/9701_s08_qp_4.pdf Q2 a iii.. how do we balance the equation using oxidation numbers?
  18. S

    Chemistry: Post your doubts here!

    in Q5 part b..why does the marking scheme give positive E values? im getting negative.. http://www.xtremepapers.com/papers/CIE/Cambridge%20International%20A%20and%20AS%20Level/Chemistry%20(9701)/9701_w10_qp_43.pdf
  19. S

    Chemistry: Post your doubts here!

    i really need help with these questions.. 1,4,8,15,16,25,26,29,36.. in some of them i do have an explanation for my answer but apparently they:re wrong so if someone could please correct me! in 16 isnt the major product of the electrolysis of brine, NaOH? 1n 25 (2.76 - 2.07)/2.76 x 100 gives us...
  20. S

    Chemistry: Post your doubts here!

    okay i really need help with these questions.. 1,4,8,15,16,25,26,29,36.. in some of them i do have an explanation for my answer but apparently they:re wrong so if someone could please correct me! in 16 isnt the major product of the electrolysis of brine, NaOH? 1n 25 (2.76 - 2.07)/2.76 x 100...
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