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  1. Eugene99

    Chemistry: Post your doubts here!

    wait, can you tell me which reaction was that when ketone reacted with potassium manganate solution? why was carbondioxide produced? I don't remember reading about any such reaction?? :(
  2. Eugene99

    Chemistry: Post your doubts here!

    thanks! I get that
  3. Eugene99

    Chemistry: Post your doubts here!

    Can you please explain why? Shouldn't the chiral centers have four different substituent groups attached?
  4. Eugene99

    Chemistry: Post your doubts here!

    I thought only the CH3 which is near to OH was the only chiral center, because it was the only one which was sp3 hybridizied and had four different groups attached but how is the answer D?? :(
  5. Eugene99

    Chemistry: Post your doubts here!

    So I can understand that carvone is a ketone and 2-4 DNPH is a test for carbonyl group, but how will I know that what amount of molecules react with 2,4 DNPH??
  6. Eugene99

    Physics: Post your doubts here!

    I got that 2nd Edition of Physics book, but will it cover 2016 syllabus?
  7. Eugene99

    Chemistry: Post your doubts here!

    Your explanations are awesome! (y)
  8. Eugene99

    A level Biology: Post your doubts here!

    which paper is this? I don't think it's in the syllabus now
  9. Eugene99

    Mathematics: Post your doubts here!

    We are given: Σ(x-110) = -47 Σ(x-110)^2 = 5460 n=30 let y= x-110 Σy=-47.2 and Σy^2=5460 ȳ=-47.2/30 =-1.57 since y=x-1110 ȳ= x̅-110 x̅=ȳ+110 =-1.57 +110 =108.43 For SD calculate the sd of y √Σy^2 /n -(ȳ)^2 (you know the normal formula we use to...
  10. Eugene99

    Afnan Hafiz I thought you might check this out XD :p

    Afnan Hafiz I thought you might check this out XD :p
    • Eugene99
    • Profile post comment
  11. Eugene99

    Physics Book Suggestion

    Will this book cover the syllabus specifications: http://www.amazon.com/Scientists-Engineers-CengageNOW-2-Semester-Personal/dp/0495013129
  12. Eugene99

    Mathematics: Post your doubts here!

    At least two of the witnesses select accused person means that we can either have all three correct (cuz it says AT LEAST) or chose two correct and one wrong: you can see from the tree diagram it can be done in four ways: correct x correct x correct (all three correct) wrong x correct x...
  13. Eugene99

    A level Biology: Post your doubts here!

    Somebody please explain this!!
  14. Eugene99

    w.slam welll...no idea xD I beg your pardon if I wasn' supposed to :p

    w.slam welll...no idea xD I beg your pardon if I wasn' supposed to :p
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  15. Eugene99

    exam are approaching...tips to be in shape(links for revision notes and stuff)

    Good tips, but you probably shouldn't wait for 100 replies to add notes! :P
  16. Eugene99

    ~~jokes?? in here?? really??

  17. Eugene99

    A' Level Registrations for May/June 2016

    I had PK853 last time and Garrison Golf Club
  18. Eugene99

    A level Biology: Post your doubts here!

    Ohh good! wonder why I didn't think of Google Books! (probably cuz they are never helpful, the pages needed the most are always missing:p) Thanks a bunch (y)
  19. Eugene99

    A level Biology: Post your doubts here!

    This is the new edition of Biology but I think the left side of this page is missing, as there is no Fig 2.7 and also seems like the text is not linking . I desperately need this one, if somebody has the book, could you please scan this page#33 of this book? :(
  20. Eugene99

    REDSPOT A LEVEL CHEMISTRY

    For Stichiometry here: https://www.dropbox.com/s/63k6ykdq3q5cozk/Stichiometry%20MCQs.pdf?dl=0
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