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  1. L

    how was chemistry p21?????!!!

    bt i think they said other than acid,, not sure
  2. L

    physics practical help needed...!!

    always write the values in SI units and in appropriate significant figures!!
  3. L

    how was chemistry p21?????!!!

    i wrote that for Ca dissloves in the first one and CaO does not dissolve in the second one! what did u write?
  4. L

    how was chemistry p21?????!!!

    i dont remeber, maybe 1 or 2 and yeahhhh, one more ques, what is the other reagant u use to get Z other than using dilute sulphuric acid????
  5. L

    how was chemistry p21?????!!!

    noo, they asked for 2 :/ they asked for the harmful effects and how it effects the environment, or something like that which makes 3 marks
  6. L

    how was chemistry p21?????!!!

    yeah it was easy, but what did u write for the reagants and conditions for converting halogenoalkanes to alkynes????
  7. L

    how was chemistry p21?????!!!

    well ehmm m not sure too :oops: i wrote pumice and heat , cuz we use this in an elimination reaction :S
  8. L

    how was chemistry p21?????!!!

    why H2SO4 nad reflux?? it was an elimination reaction.
  9. L

    how was chemistry p21?????!!!

    there was water cuz they told us that oxide of different elements were formed!! and then they asked that ONLY 2 OF THE OXIDES ARE DANGEROUS TO THE ENVIRONMENT which was SO2 and CO2
  10. L

    how was chemistry p21?????!!!

    @wonderland its reactants - products my mistake in this ques was that i balanced the equation in such way that C2H2 had 2 moles :( instead of 1!! and what abt the reagants and conditions of coverting halogenoalkanes to alkynes (triple bond)??
  11. L

    INFO on Phy Prctical 31?

    no, i've heard tht its the first question means the graph part will be in this ques! well rheostat is like a coiled wire with a slider on top of it make sure that u connect the wires correctly!! cuz thts the most common error students make
  12. L

    CHEM P31!!

    yeah it was good! :Yahoo!: but what were the reagants for converting halogenoalkane to alkyne (triple bond) ??
  13. L

    INFO on Phy Prctical 31?

    yes its coming!! do u hav any idea abt the 2nd ques??
  14. L

    INFO on Phy Prctical 31?

    yep! thats true!
  15. L

    CHEM P31!!

    how was ur chemistry paper 31??
  16. L

    Chemistry 9701/P22

    islu if didnt u give p21??
  17. L

    Chemistry 9701/P22

    @islu if, did u give p21 yet or not??
  18. L

    CHEMISTRY P21!! how did it go guys?!!

    i didnt take it yet
  19. L

    boltzmann distribution..!

    u guys are friends now?! nicee!! :)
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