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  1. L

    Chemistry 2006

    Q1...the ratio of N2O4:2NaOH is 1:2 so 0.02 mol of N2O4 means (2*0.02)=0.04 moles of NaOH mole=vol * conc vol=mol/con 0.04/0.5= 0.08 dm^3 * 1000 = 80cm^3 so its D
  2. L

    Topical Pastpapers Physics

    oh i think i got it the minimum area is the area of the cylinder during the breaking point...cuz when its at the breaking point the diameter decreases so therefore the cross sectional area. so to get the min area....stress=force/area area=force/stress at breaking point(frm the graph)...
  3. L

    Topical Pastpapers Physics

    lol...yeah i didnt get the marking shceme waisay bhi i gt the same answer as the ms :/ anyways i'll work out to find how we get the area of bulbula :D lol
  4. L

    Topical Pastpapers Physics

    i think there's somthing to do with stress cuz we hav force and the area...so something to do with stress which is force/area bt my way also gave the same answer :shock:
  5. L

    Topical Pastpapers Physics

    okk for this question what i did was, i made eqal sizes of bubbles along the diameter of the cylinder. so there were 5 bubble in total along the diameter. then i said that 5 bubbles=5 times more diameter than 1 bubble = 10 times more radius than 1 bubble so 3.2*10^-6= 3.142 (pi) 10r^2 then u...
  6. L

    bond angle

    yeah it must be the same as water 104.5
  7. L

    Topical Pastpapers Physics

    ur welcome man :P
  8. L

    Topical Pastpapers Physics

    @rviboy nodes are the part od the stationary waves where there is zero displacement, while antinodes are the part of stationary waves between the nodes with maximum displacement. Young Modulus is stress/strain stress is force/cross-sectional area strain is extention/original length this...
  9. L

    AS biology!

    i'm a woman :P :P anyways, ur welcome :)
  10. L

    AS biology!

    @hassam bro thnks :) @rviboy Casparan strip...its a strip of suberin formed on the cells of endodermis, this suberin strip is waterproof and doesn't allow water to pass, therefore there are some passage cells which allow the water to pass. Anticodon....these are the bases present on the tRNA...
  11. L

    AS biology!

    this one too Q 39 and 40 http://www.xtremepapers.net/CIE/Interna ... 7_qp_1.pdf
  12. L

    AS biology!

    Assalamo Alaikum can someone plz hepl me in this question? question 30 http://www.xtremepapers.net/CIE/Interna ... 6_qp_1.pdf thanks!
  13. L

    BIO!

    can someone plz tell me Q.17 http://www.xtremepapers.net/CIE/Interna ... _qp_13.pdf why is it D in the ms?? why not B?
  14. L

    chemistry practicals....

    yep :P
  15. L

    chemistry practicals....

    http://www.xtremepapers.net/CIE/Interna ... _qp_31.pdf
  16. L

    chemistry practicals....

    lol :P
  17. L

    chemistry practicals....

    yeah i also got nov 2010 in my mocks, there is organic part in it, bt unless u know the theory, u can make observations!
  18. L

    chemistry practicals....

    in these recent years, there are 3 qurstions in 2 hrs. 1 of them is salt analysis for sure 1 is titration and 3rd is a small one like enthalpy
  19. L

    Physics help needed For AS level

    JUNE 09 18...I DONNO :shock: 20....P has l lenght and A cross section....so its extension is E Q has 2l...which means 2 times more extension and A/2 so 2 times again more extention...so in total 4E the ratio of EXTENTION IN P : EXTENSION IN Q is 1:4 bt the force(tension) needed to extend...
  20. L

    Physics help needed For AS level

    Question No 21 OCT/NOV 2009 Paper 11 well if u see the line is a bit curved...so to find the strain energy, area under the curve (its not a triangle so u hav to add the small area too! ) so its 0.5*(2/1000)*100=0.1J plus the small area above the triangle so u estimate that if the energy of the...
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