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  1. H

    All chemistry Doubts here :)

    xishtar answer my question plz :)
  2. H

    All chemistry Doubts here :)

    y only temperature decrease and not increase? and can u explain me the whole question step by step? :sorry:
  3. H

    IGCSE CHEMISTRY STUDY GUIDE UPLOAD

    LoL even i finished doing all past papers in 9th std and also during my mock exams but i am telling about revising it for the exams. :P
  4. H

    All chemistry Doubts here :)

    I have a doubt 1.http://www.xtremepapers.me/CIE/Cambridg ... _qp_12.pdf Question (14) I think chlorine will go to anode (yellow green) and hydrogen at cathode (colourless) because it is concentrated NaCl but the answer is something else :P 2.http://www.xtremepapers.me/CIE/Cambridg ...
  5. H

    IGCSE CHEMISTRY STUDY GUIDE UPLOAD

    i am not superfast, i havent even started solving past papers of bio paper 1 and chem paper 3 :(
  6. H

    IGCSE CHEMISTRY STUDY GUIDE UPLOAD

    wow nyc, u are superfast :D
  7. H

    IGCSE CHEMISTRY STUDY GUIDE UPLOAD

    Till now i just finished studying the whole chemistry book and solving all years chemistry paper 1 questions :( You finished doing the papers from 2002-2010?
  8. H

    IGCSE CHEMISTRY STUDY GUIDE UPLOAD

    For Chemistry and biology are u finished with studying the book as well as solving pastpapers? :shock:
  9. H

    Curve for Chemistry and Physics cancelled ??

    I dont think the curve will be cancelled cuz there are some students other than you who were doing variant 1 and i think it would be very difficult for them to get 90% above (A*) in physics and chemistry :P
  10. H

    IGCSE CHEMISTRY STUDY GUIDE UPLOAD

    Actually u are the one who is pressurizing others to upload the book :P
  11. H

    All chemistry Doubts here :)

    K,thnx a lot :D
  12. H

    All chemistry Doubts here :)

    So if in ZnO, only Zn is getting reduced and if Oxygen neither gets oxidised nor reduced, then too we should write that the whole ZnO is getting reduced?
  13. H

    All chemistry Doubts here :)

    Yaa,only Fe is getting reduced but the answer is the whole Fe2O3 will reduce and is this the case in other reactions also?
  14. H

    All chemistry Doubts here :)

    But the Nacl is not dissolved in water i think and cant the melting point be less than 100 degree celsius? :P
  15. H

    All chemistry Doubts here :)

    I have a doubt about oxidation and reduction. Fe2O3 +3CO->2Fe +3CO2 Here only oxidation state of Fe is reducing from 3 to 0 but the oxidation state of O3 which is -2 remains the same but then too is it like the whole Fe2O3 is reduced and is this the case in all reactions? :unknown:
  16. H

    All chemistry Doubts here :)

    :D
  17. H

    All chemistry Doubts here :)

    K,see In 4 (b) (ii) they are asking the mole ratio so work out the number of moles for carbon and hydrogen they say that benzene is composed of 92.3% of carbon so therefore number of moles of carbon=92.3/12=7.7Moles then the amount of hydrogen is 7.7% so the number of moles of hydrogen=7.7/1...
  18. H

    All chemistry Doubts here :)

    THANKS a lot, i understood what u said :D
  19. H

    All chemistry Doubts here :)

    I asked the wrong question,the paper is same but i want the answer for the 11th question srry guys :( i posted the wrong question number :oops:
  20. H

    All chemistry Doubts here :)

    http://www.xtremepapers.me/CIE/Cambridg ... 7_qp_1.pdf Question 12th, this is a very tough question and i didnt understand the question after reading the examiners report :cry: :cry: :cry: :cry:
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