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  1. S

    Chemistry: Post your doubts here!

    Like this one.http://maxpapers.com/wp-content/uploads/2012/11/9701_s14_qp_33.pdf It's in the second experiment, c (i)
  2. S

    Chemistry: Post your doubts here!

    Guys, for a question which asks to calculate the percentage error, how do we do that? (In the practical paper)
  3. S

    Chemistry practical 33

    Are you giving yours tomorrow?
  4. S

    Chemistry practical 33

    UAE. Wbu?
  5. S

    Chemistry practical 33

    Yeah, hey! I am but tomorrow. Do you have any helpful notes on it?
  6. S

    Chemistry: Post your doubts here!

    Same here! My practical paper for chem,. is tomorrow and any notes and helpful tips would be awesome! PLEASE HELP!!!!!!!
  7. S

    A level Biology: Post your doubts here!

    Omg it did right? Even for chem. it did! They are kinda different, the papers this year.
  8. S

    Chemistry: Post your doubts here!

    I have a question in organic chemistry, what is the role of conct. H2SO4? I know that it forms a double bond and stuff, but what else does it do?
  9. S

    Chemistry: Post your doubts here!

    Thanks for replying! :)
  10. S

    Chemistry: Post your doubts here!

    Can anyone show me to how to solve this??
  11. S

    Chemistry: Post your doubts here!

    How do we do (b) part (ii)???
  12. S

    A level Biology: Post your doubts here!

    Omg, I know we can't discuss the answers. But how did you guys find it? I think mine could have been better, I made the stupidest mistakes, striking out the correct answer and then writing the wrong one! That cost me like three marks :'(
  13. S

    A level Biology: Post your doubts here!

    Hey! Guys could you please help me out here? My final AS bio paper 2 is tomorrow! Pray that it goes well! Anyway, so in this question, for K, the left ventricle is relaxing and so is the left atria, and the av valve is open and the aortic valve is closed, so the conditions are same as in the H...
  14. S

    A level Biology: Post your doubts here!

    Can someone explain this, please?? Correct answer is A!
  15. S

    Chemistry: Post your doubts here!

    When a mixture of ethanal and propanal is reacted under the same conditions as in step I above, a similar reaction occurs with the formation of compound S, C5H10O2. CH3CHO + CH3CH2CHO ----> C5H10O Suggest a structural formula for S...
  16. S

    Chemistry: Post your doubts here!

    After Y, when concentrated. H2SO4, is added why is the OH group removed? Why not the COOH? :s because the formula that I came up with is: CH2=CHCH(OH)CO2H
  17. S

    A level Biology: Post your doubts here!

    This one as well! Correct answer is D.
  18. S

    A level Biology: Post your doubts here!

    Guys! Explain this one please! Correct answer is D.
  19. S

    (ALL NOTES) =) O-LEVEL 0R IGCSE + A-Level

    Hii! Could you guys give me links to pdfs of AS LEVEL PHYSICS ONLY? I'm seeing a lot of A-level notes here, while I just want the AS part of it. Any help would be highly appreciated! :)
  20. S

    A level Biology: Post your doubts here!

    But then the options are either in micrometer or nanometer :/ My measurement is 0.3 cm.
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