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  1. S

    Chemistry: Post your doubts here!

    http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Chemistry%20(9701)/9701_s11_qp_33.pdf q3 parts d and e. how do we know what the cation is?
  2. S

    biology practical

    What?! All my readings were below 0.2 cm3
  3. S

    biology practical

    Haha yeah. On a different note are you guys giving p34 for chem and physics as well?
  4. S

    biology practical

    Add cm3 of iodine to get a 100% validity test for starch...or something along those lines
  5. S

    Physics: Post your doubts here!

    Percentage uncertainty in L + 2(percentage uncertainty in T)
  6. S

    Physics: Post your doubts here!

    I don't know what year it is so I can't :p shouldn't the equilibrium of forces equation be applied tho? So that the total magnitude if the forces acting equals to 0....F + Fcos30 + Fsin30 = 10; someone see if it works cause I don't have a calculator on me right now
  7. S

    Physics: Post your doubts here!

    Huh I don't get it. Where does the vertical component of the 10N force act?
  8. S

    Chemistry: Post your doubts here!

    B D A
  9. S

    Chemistry: Post your doubts here!

    Qs 24, 29 and 30 of the same paper
  10. S

    Chemistry: Post your doubts here!

    http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Chemistry%20(9701)/9701_w11_qp_12.pdf 4,10 and 18
  11. S

    biology practical

    I got 3.0 cm3...I just extended the line since it was already rightly linear and I extrapolated the value from the graph
  12. S

    biology practical

    I drew the epithelial cells as well...they didn't look like squamous tho
  13. S

    Biology practicals 34

    Cause the length of the divisions in different syringes varied even tho their volume remained the same
  14. S

    Biology practicals 34

    The systematic error was in the syringe
  15. S

    Biology practicals 34

    But that would mean that I asked for another beaker of distilled water :p I couldn't understand when you're supposed to repeat readings so I decided to over effecirnt this time :)
  16. S

    Physics: Post your doubts here!

    I still don't get 31 and 35...why is the electron deflected out of the field? In 35 why is B wrong...I mean I got those set of values - power decreases initially and then increases according to I2R=P
  17. S

    Biology practicals 34

    Did the 5 marks include the labeling if guard cells?
  18. S

    Biology practicals 34

    Ya they were increasing. I got .5 , .7, 1.0 and 1.7...but I feigned a second set of readings to get them. Will they accept those readings :/
  19. S

    Physics: Post your doubts here!

    http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Physics%20(9702)/9702_w11_qp_12.pdf 31, 35 and 37
  20. S

    Chemistry Paper 3 HELP NEEDED

    Wouldn't it be half of least count?
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