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  1. S

    Chemistry: Post your doubts here!

    I have a question > When we want to use Bond energy of Cl2 >> as its quoted in the Data booklet it should be 242 .. but for Many time i have seen that they are using 244 as the answer ! Why? which data should we quote if the question came to us ? one of the questions is o'n 2009 va' 41...
  2. S

    Mathematics: Post your doubts here!

    Can someone do Second part( ii ) of Both question only
  3. S

    Mathematics: Post your doubts here!

    Hope this helps
  4. S

    A level Biology: Post your doubts here!

    why probes and agarose gel are added in electrophoresis >?
  5. S

    Chemistry: Post your doubts here!

    Can someone tell me how to draw the diagram for 1 (c) and eg, of ONE method to prepare the concentrations ? in (d)
  6. S

    Mathematics: Post your doubts here!

    Do you do mechanics?
  7. S

    Mathematics: Post your doubts here!

    i would like to advise you bro! This kind of questions , from the text book are VERY complicated , and according to our exam point of view , not very hard question are coming .. so what i advice you is to , do pastpapers ONLY ... this questions squeeze your mind for nothing!
  8. S

    Mathematics: Post your doubts here!

    Thanks bro , but i now those basic things .. i meant when it comes in hard question for eg 5 Marks ,,, how to draw it ? Does it have to be to scale,? or drawing it without scale ? eg, 1- if said draw Z + 2 - 2i > 1 we will draw with radius one , but is the point ( 2 - 2i ) or ( 2i -2 )...
  9. S

    Mathematics: Post your doubts here!

    How to draw argand diagrams ? i know the basic ideas of argand diagram , but how to draw some complex no,'s
  10. S

    Mathematics: Post your doubts here!

    Find factors of' z^4 -16
  11. S

    can you post A level papers for oct/nov 2013 papers

    can you post A level papers for oct/nov 2013 papers
  12. S

    October November 2013 Papers

    CaptainDanger link which you posted in one thread for nov2013 papers doesnt work! could you please post it again here ?
  13. S

    Mathematics: Post your doubts here!

    I will explain you th whole concept and try to understand ... First thing you need to consider , is to know if surface is smooth/ rough ( has friction )by reading question. then follow the formula wd (workdone ) by driving force = wd by resistive force ( resisting motion ) +- K.E gained/lost...
  14. S

    oct nov 2013 papers....

    @TheZodiac can you post biology threshold? for AS level
  15. S

    October/November 2013 Results Discussion

    myresults.cie.org.uk
  16. S

    Mathematics: Post your doubts here!

    First question . http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_w12_qp_53.pdf where shall we put the weights of semicircular lamina of weight 12 N and a uniform semicircular arc of weight 8 N .. i mean is it at centre , edge etc
  17. S

    Mathematics: Post your doubts here!

    4 can someone do pat ( ii) ? marking scheme gave : (12 + 8) × 0.6sin30 = F(0.6 + 0.6cos30) F = 5.36 all i know is they used moments about A , and nothing else!
  18. S

    Chemistry: Post your doubts here!

    how to solve simple questions involving chromotography ?
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