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  1. brainiac

    Chemistry paper 12 discussion!!!!!!!!!!

    chill up bro u r right heat is definitely needed ........ and dont be so tensed even if u get a minimum of 35/40 u still r able to score i higher A meaning A* .....now just concentrate on paper 3 and study hard inorder to ace it :D :D :D :D :D
  2. brainiac

    Chemistry paper 12 discussion!!!!!!!!!!

    well i m hoping of getting 38/40 .............:(
  3. brainiac

    Chemistry paper 12 discussion!!!!!!!!!!

    hey wat did u guys chose for that barium and silver ions
  4. brainiac

    Chemistry paper 12 discussion!!!!!!!!!!

    thank GOD .......... i also wrote D ....... iwas a little confused but phew
  5. brainiac

    Chemistry paper 12 discussion!!!!!!!!!!

    sorry bro but i also think that heat is needed for steel making ... as although it was an exothermic reaction it needs a small amount of heat energy for carbon and oxygen and lime and impurities to react
  6. brainiac

    Chemistry paper 12 discussion!!!!!!!!!!

    i believe i chose the wrong answer for the brass question ............ well just wanted to ask was that dilute or concentrated HCL .... :( :( :( :( :(
  7. brainiac

    Chemistry paper 12 discussion!!!!!!!!!!

    yup i wrote copper .......... firstly i was a little doubtfull about it as i also thought of aluminium but then i realised that there was no core thing mentioned and secondly as far as i remember it said substation means underground not over head ......... so i believe its copper ....:)
  8. brainiac

    Chemistry paper 12 discussion!!!!!!!!!!

    hey guys for the copper question wasnt it was the substation ........... i remember it was not overhead and also there was no core thing mentioned just cables :)
  9. brainiac

    Plz help!!!

    miscible liquids r those liquids which completely dissolve in one another forming a single layer suspension is a state in which small insoluble solid particles are spread throughout the solution
  10. brainiac

    Plz help!!!

    :)
  11. brainiac

    Plz help!!!

    yup
  12. brainiac

    Plz help!!!

    here u go the table i made for soluble and insoluble salts ........... kindly dont mind the drawing as i m not good at it now coming towards ur problems 1:we use filtration when we have to sperate soluble and insoluble salts 2:we use crystallization when we seperate a solid by cooling either...
  13. brainiac

    CHEMISTRY PAPER 3- HELP

    ok, sorry bro i will try to avoid this mistake in future ....................:)
  14. brainiac

    CHEMISTRY PAPER 3- HELP

    bro if u just pay a little attention to the question u will notice a sntence ( acid in excess) this means there is already sufficent acid for the magnesium to react fully ............. this makes it clear that the variables would not contain concentration rather temp, surface area ,or catalyst...
  15. brainiac

    REDOX REACTION

    it is a reaction where oxidation and reduction both take place like this hope i helped :)
  16. brainiac

    Chemistey Doubts

    yup its the reactivity series ...........
  17. brainiac

    Chemistey Doubts

    here u go this is the reactivity series for metals ................. hope i helped and good luck for exams
  18. brainiac

    which textbook r u using for chemistry ..........

    hey guys which textbook r u using for ur revision for chemistry i m using this one .............. :)
  19. brainiac

    All chemistry Doubts here :)

    yup hes right
  20. brainiac

    Condensation polymerisation !!

    bro comeon that doesnt makes the difference ....... condensation polymerisation says elimintaion of water ... there is no such formula or theory that H is to be eliminated from the middle or bottom ........... hope u understood :)
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