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  1. L

    AS PHYSICS!!!

    i've already wasted 30 mins!! i'll try once more. btw which year is this??
  2. L

    AS PHYSICS!!!

    i think it's D!
  3. L

    AS PHYSICS!!!

    thanks!
  4. L

    AS PHYSICS!!!

    Q 24...plz explain me that why is the answer C? http://www.xtremepapers.net/CIE/Interna ... _qp_11.pdf
  5. L

    chem help

  6. L

    chem help

    C...when SO2 is added we get SO3 in the salt and when SO3 is added we get SO4 in the final salt the valency for SO3 is -2 and the valency for NH4 is +1 so we cross the numbers and get (NH4)2SO3.
  7. L

    AS PHYSICS!!!

    well in C the spring with higher k is above the spring with lower k which means that if we put a lager mass, the rigid box will prevent the higher k spring to extend and also, the lower k spring will extend for both large and small masses..which we dont want, we want the low k spring to work for...
  8. L

    AS PHYSICS!!!

    Q 24...plz explain me that why is the answer C? http://www.xtremepapers.net/CIE/Interna ... _qp_11.pdf
  9. L

    Topical Pastpapers Physics

    yeah sure why not? :P yeah we must take these type of questions as a challege whether we can do it or not. 8-)
  10. L

    help bio

    the muscles in the vein doesn't contract....they relax though! cuz the blood in the veins(low pressure) is actually moved up by the skeletal contraction. so when the person is standing for a longer period, the skeletal muscles dont contract, and therefore, the blood remains in the veins and...
  11. L

    AS PHYSICS!!!

    the lower the spring constant the more the extension (k=F/x) the higher the k the less the extension for high sensitivity for low masses means we use lower k for lower sensitivity for large masses we use higher k we use the rigid box to prevent the sping with lower k to extent alot when...
  12. L

    AS PHYSICS!!!

    yeah i know, bt my teacher told me to find the K(constant) when dealing with these types of ques...anyways i gt it now..
  13. L

    Chemistry 2006

    Q12...at 500K the reaction would be faster and therefore the curve will shift to the right...i.e. the solid line while at 300K the curve will shift to the left...which is the dotted one..so its C
  14. L

    Chemistry 2006

    but ammonia has stronger intermolecular forces, which deviates ideal gas! we usually consider the intermolecular forces rather than molecular mass to find which one deviates more..
  15. L

    AS PHYSICS!!!

    http://www.xtremepapers.net/CIE/Interna ... _qp_12.pdf question 23 plzzz....why isn't the answer D??
  16. L

    Topical Pastpapers Physics

    bhoolna nhi chahye naaa. what if this type of question comes in the exam? what will u do then? :D 8-)
  17. L

    Physics help needed For AS level

    hope this helps :)
  18. L

    Chemistry 2006

    Q19...its A Nitrogen has triple bonds present...and high energy is needed to break these bonds breakage of the bonds is an endothermic process and therefore there is a positive enthalpy change.
  19. L

    Chemistry 2006

    Q11...its A acidify the pool acidfy means adding H ions. the more H ions area present, more HOCl will be made
  20. L

    Chemistry 2006

    Q 6..least resembles ideal gas means deviates the most so its ammonia, cuz of the strong intermolecular forces (hydrogen bonds) present.
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