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Search results

  1. A

    How was ur Phy 34 people ??

    Today i learnt what exam pressure does to rational thinking and common sense.. !!! I forgot to convert cm to metre.. em so stupid ..lol .. !! lose 4 to 5 marks on this one.. Rest went pretty good.. What was the unit of z ?? and what were ur angles of deflections ??
  2. A

    Physics Practical Problem

    Someone tell me this..... !!! 100 is 1 sig.fig ? :S !!! and 0.004 is also 1 s.f rite.. while 0.040 is 2 sf ??
  3. A

    Physics Practical Formula / Relation Proving

    Some one confirm this... This is how we have o prove ??? :// Practical tomorrow morning :/
  4. A

    A level video lectures

    True !! books alone dont make A graders :D
  5. A

    CHEM PAPER-22

    @ abv. LOl we knw its Al2O3 :/
  6. A

    important boks!!!

    For Chem too Stanley thorns is awesome.. that was the book i ws talking abt in my earlier post
  7. A

    ChemP22 a question

    Yea curse them :mrgreen: :mrgreen:
  8. A

    ChemP22 a question

    p1 now.. !!!
  9. A

    ChemP22 a question

    For teritary alcohols it does.. THough i never heard of using copper in dehydrating primary or secondary alcohol :O !!!Kher.. God knows :D We r done with the paper.. the rest remains with the examiners :)
  10. A

    ChemP22 a question

    the reason copper reacted with oxygen on strong heating which it does :O
  11. A

    important boks!!!

    my teacher's notes are the best though :P !! dint even need help of any book :D
  12. A

    ChemP22 a question

    even iof catalyst X went decomposition, how does it turn black ?? If AL203 decomoposes it would become aluminium which isnt black.. If SIo2 is heated it wont decompose at all .. very heat resistant !
  13. A

    ChemP22 a question

    i dunt knw.. i ws confused myself.. Copper was used to catalyse the reaction because in the case of tertiary alcohols we do use copper.. !!! The rest just doesnt fit.. !! nothing else is black in color
  14. A

    ChemP22 a question

    We were not DECOMPOSING alcohol... :/ !! If we were we wouldnt get propene would we :S !!! we would get CO2 and water and some carbon and the whole process goes to waste :/ ! SiO2 isnt black AL2O3 isnt black .. only CUO is black
  15. A

    ChemP22 a question

    And u r rite catalysts do remain unchanged.. And this was the case here.. catalyst wasnt taking part in the reaction intended.. It underwent another reactoin with oxygen :/
  16. A

    ChemP22 a question

    No .. the pumice part was Al2O3.. I was talking about the black substance X
  17. A

    ChemP22 a question

    I wrote CuO too.. because that was the only thing that fitted :/ !! Dont knw whether CaO is rite... Many wrote SiO2.. I wrote Al2O3..Its correct.. confirmed with my teacher
  18. A

    important boks!!!

    Mathematics is the one prescribed by cie.. i think that is the only book For chemisry i have Understanding Chemistry by Ted lister... its one of the best books i have come across.. very ilustrative and very good explanatin given for topix
  19. A

    CHEMISTRY PAPER 21

    Our variant was the easiest paper ever :/
  20. A

    marks needed for an A????

    Well no.. It depends on the threshholds set by the examiners.. U can view some on this site (pdfs containing the term GT) and u will get an idea.. !!! It isnt set on 80 or 90 percent... An 'A' could even be on 70 or 60 percent depending on the threshhold
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