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  1. Hskk

    Biology; Chemistry; Physics: Post your doubts here!

    I was until I did another recent paper and scored awful marks in it. Most of the times I see a valid logic but the m.s. doesn't mention my answer. Though I'm uncertain about the prep now, I'm holding unto the hope that examiners mark other valid logics not mentioned in the m.s. as well. :cautious:
  2. Hskk

    Biology; Chemistry; Physics: Post your doubts here!

    Great. (y) I'll skip them too. :p
  3. Hskk

    Biology; Chemistry; Physics: Post your doubts here!

    Are you guys learning the logic gates? We do have a choice to leave them, right?
  4. Hskk

    Guess Paper/ Exams Tips (SCIENCES, ENGLISH AND MATHS ONLY!!)

    Here's a brilliant site for O'level science students. All topics have slide shows and practice questions. https://sites.google.com/site/urbangeekclassroomsg/
  5. Hskk

    Biology; Chemistry; Physics: Post your doubts here!

    Oh that intersection!! *facepalm* Ms was right aftertall. :p
  6. Hskk

    Biology; Chemistry; Physics: Post your doubts here!

    https://www.xtremepapers.com/community/attachments/untitled-png.24391/ It isn't specified so it'd be for a normal eye. The m.s however, is referring to a short sighted one.
  7. Hskk

    Biology; Chemistry; Physics: Post your doubts here!

    Because the ms said the image would be before the retina...
  8. Hskk

    Biology; Chemistry; Physics: Post your doubts here!

  9. Hskk

    Biology; Chemistry; Physics: Post your doubts here!

    Oh okay. Thank you. :)
  10. Hskk

    Biology; Chemistry; Physics: Post your doubts here!

    1. The blood flows from the body to the heart, then to the lungs and back to the heart again, which pumps its to the body. So in one cycle, the blood flows through the heart twice, that's double circulation. 2. It transmits the impulses received from the sensory organs to the CNS. 3. It has a...
  11. Hskk

    Biology; Chemistry; Physics: Post your doubts here!

    Is Carbon Monoxide produced in the electrolysis of aluminium oxide?
  12. Hskk

    Biology; Chemistry; Physics: Post your doubts here!

    So then both cases are correct. Let's just hope the examiner knows that.
  13. Hskk

    Biology; Chemistry; Physics: Post your doubts here!

    Why not? When we draw ray diagrams of a converging lens, the image is formed on the point where the rays meet, and that image is inverted. No? :confused:
  14. Hskk

    Biology; Chemistry; Physics: Post your doubts here!

    http://www.ivy-rose.co.uk/HumanBody/Eye/Eye_Image-Formation.php It doesn't here. Since its so ambiguous, maybe they'll accept both...they should :(
  15. Hskk

    Biology; Chemistry; Physics: Post your doubts here!

    Nop, not before it. ON the retina. Diffusion, because water vapour is a gas, plus, it doesn't pass a partially permeable membrane.
  16. Hskk

    Biology; Chemistry; Physics: Post your doubts here!

    I use federal bio, and it clearly states, a number of times, that the image is focused on the retina. :confused:
  17. Hskk

    Biology; Chemistry; Physics: Post your doubts here!

    No wonder I didn't get the first part of it :p Oh well, I hope this q doesn't come in my paper. :(
  18. Hskk

    Biology; Chemistry; Physics: Post your doubts here!

    Which year is it? Maybe the examiner report says something...
  19. Hskk

    Biology; Chemistry; Physics: Post your doubts here!

    Maybe they don't consider immunity synonymous to resistance? :eek:
  20. Hskk

    Biology; Chemistry; Physics: Post your doubts here!

    Constant use of the same antibiotics for a certain bacteria can cause it to become resistant to the effect of the antibiotic. The bacteria develops mutations over time and after many generations the best bacteria i.e. the one resistant to the medicine is naturally selected- thus evolution(I'm...
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