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Search results

  1. J

    POST YOUR BIO AND CHEM PAPER 1 DOUBT HERE !!!!

    Atom X has 8 more electrons than atom Y, so they could be in Group 8, like Helium and Neon, etc. Thus, both students could be right and the answer is A :) For Q23, Copper as a metal does not react with any acid except for nitric acid. So option 1 is completely eliminated. The remaining options...
  2. J

    POST YOUR BIO AND CHEM PAPER 1 DOUBT HERE !!!!

    I myself am not very sure about this question, but this was my reasoning: It should be 150 cm3 because we know that oxygen makes up about 21% of air. So if 120 cm3 was remaining, 150-120= 30cm3, which is closest to 21 :P Silly, I know. But if anyone has a more logical explanation, I would be...
  3. J

    POST YOUR BIO AND CHEM PAPER 1 DOUBT HERE !!!!

    The answer should be C..
  4. J

    POST YOUR BIO AND CHEM PAPER 1 DOUBT HERE !!!!

    For June 2010 question, The number of protons will be equal to the number of electrons. The diagram specifies that there are 9 particles in the nucleus. So if there are 4 protons in the nucleus, the remaining 5 particles will have to be neutrons.
  5. J

    POST YOUR BIO AND CHEM PAPER 1 DOUBT HERE !!!!

    Copper only reacts with nitric acid!
  6. J

    POST YOUR BIO AND CHEM PAPER 1 DOUBT HERE !!!!

    Variant?
  7. J

    POST YOUR BIO AND CHEM PAPER 1 DOUBT HERE !!!!

    Oh my God I feel so stupid x_x Thank you! :D
  8. J

    BIOOOOOOOOOOOOOLLLOOOOGY PAPER 1 VARIENT 2

    No, it's not. It's 3, because the question specified "living organisms" which include plants, animals and bacteria :)
  9. J

    POST YOUR BIO AND CHEM PAPER 1 DOUBT HERE !!!!

    A chemical engineer plans to produce hydrochloric acid. Which metal is best for the reaction container? A copper B iron C magnesium D zinc Could someone please explain why the answer is A? :s
  10. J

    Prediction of Grade Thresholds for May-June 2012!

    The sad part is that it isn't a matter of 'want' for me- I NEED all A*s ! Having a brother who's a doctor sucks :(
  11. J

    Environmental Management folks!!!

    Now THAT I'm not sure of :/ Sorry!
  12. J

    Environmental Management folks!!!

    Never mind, then. I tried to explain it as best as I could..
  13. J

    Environmental Management folks!!!

    Like how when 2 continental plates collide and they are forced up into fold mountains? Like that, the land folds upwards and if this occurs in an area where there is oil available, the oil gets trapped in these upfolds. That's it! :)
  14. J

    Hard/challenging paper 3 chemistry.

    InshaAllah whatever I've studied will come to good use :)
  15. J

    Hard/challenging paper 3 chemistry.

    I'm so nervous for Chem :s Do any of you have any tips that could help a poor soul here? :P
  16. J

    TAGGY TALKY!!

    Well you sound like a stupid_dog if you can't tell the difference between Justin Beiber and me
  17. J

    TAGGY TALKY!!

    you're not a very Smart-Guy are you?
  18. J

    TAGGY TALKY!!

    I'm a female -.- ass
  19. J

    Biology Paper 3 (0610)

    2-4 marks, maybe? Not too sure :)
  20. J

    Biology Paper 3 (0610)

    The Ghanaian scientists used the method of selective breeding, where they dusted the pollen from the useful plants onto the plant in question. No gene alteration occurred, whereas the Australian scientists used genetic engineering, with the use of plasmids, recombinant DNA, etc. :)
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