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  1. Tekno-M

    Chemistry Variant 32 Paper Discussion

    Amylase is the catalyst in the body, I don't think amylase is available for lab experiments. Hydrochloric acid can act as a catalyst for the reaction.
  2. Tekno-M

    Chemistry Variant 32 Paper Discussion

    Same, but I think they're gonna deduct something there, because Fe(III) is an ion, an ion can't just form lol.
  3. Tekno-M

    Chemistry Variant 32 Paper Discussion

    HCl
  4. Tekno-M

    Chemistry Variant 32 Paper Discussion

    Cryolite decreases the melting point of alumina (1) and increases its conductivity (2)
  5. Tekno-M

    Biology Paper 32 2012 Discussion. 24 hours have passed.

    Kidney tubules do have microvilli btw, I think it is for the selective re-absorption.
  6. Tekno-M

    Biology Paper 32 2012 Discussion. 24 hours have passed.

    The first question was microvilli wasn't it? So many people wrote cilia. But I always had in mind that microvilli are finger-like and cilia are hair-like, and the diagram pretty much looked finger-like :D.
  7. Tekno-M

    Are Grade thresholds true????

    Are you sure it's possible to get A* in Arabic First language with 79? Because I heard it's very hard since the treshold for arabic is usually high. Anyway, I hope I do get an A* lol.
  8. Tekno-M

    Biology Paper 32 2012 Discussion. 24 hours have passed.

    Any other question you guys found hard ?
  9. Tekno-M

    Chem 3(2) MJ 2012

    We could discuss the paper via inbox. Inbox me any question :D
  10. Tekno-M

    chemistry p-3 variant 2 finished :D!!!!

    yes meaning... ?
  11. Tekno-M

    chemistry p-3 variant 2 finished :D!!!!

    I know, that's why I didn't write that, i was just replying to the person who said 'heat'. I wrote add magnesium, magnesium, I guess, should displace ethylamine. Anyway, my answer was just a guess, I wasn't certain of anything.
  12. Tekno-M

    chemistry p-3 variant 2 finished :D!!!!

    No, aluminium powder is a catalyst for the reaction between sodium hydroxide and ammonium compounds, i read it in 2 different textbooks, so I guess it's authentic lol.
  13. Tekno-M

    Physics Paper 62 discussion

    I wrote yes, because the difference was only 0.5, and the limit of experimental accuracy is 10%.
  14. Tekno-M

    chemistry p-3 variant 2 finished :D!!!!

    to get ammonia from ethylammonium chloride, you would need to add sodium hydroxide, and aluminium powder (catalyst), heating only wouldn't work lol.
  15. Tekno-M

    chemistry p-3 variant 2 finished :D!!!!

    I wrote magnesium, because magnesium can displace almost anything lol.
  16. Tekno-M

    Physics Paper 62 discussion

    What did you guys write for the question that asked "Do the results support this suggestion (Yes/No, Explanation).
  17. Tekno-M

    Physics Paper 62 discussion

    24 hours have passed, haven't they? So yes, please discuss your answers :D
  18. Tekno-M

    chemistry p-3 variant 2 finished :D!!!!

    It was good, not as hard as i expected.
  19. Tekno-M

    Hard/challenging paper 3 chemistry.

    I did that one, and faced no problems while doing it.
  20. Tekno-M

    Hard/challenging paper 3 chemistry.

    Yes I've did that, and it was awful, lol, one of the worst papers I solved. Any more.
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