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  1. darkvoid

    Biology; Chemistry; Physics: Post your doubts here!

    Do you have a link to the question by any chance? I want to see it for myself. Is it p1 or p2? If it is concentrated then obviously bromine will be discharged
  2. darkvoid

    Biology; Chemistry; Physics: Post your doubts here!

    The mark scheme must be wrong then
  3. darkvoid

    Biology; Chemistry; Physics: Post your doubts here!

    A, because plants make oxygen using photosynthesis which takes place when there is sunlight. During midnight (12 a.m) there would be no sunlight and no photosynthesis so no oxygen. B, because in the structure of a plant stem or tree bark, phloem is located on the outer region and xylem in the...
  4. darkvoid

    Biology; Chemistry; Physics: Post your doubts here!

    I believe hydrogen will be produced. Since the solution is aqueous OH- will be selectively discharged. Generally in past paper questions unless the solution is stated to be concentrated it always means it is dilute. Also the displacement series is only taken into regard when deciding on...
  5. darkvoid

    Biology; Chemistry; Physics: Post your doubts here!

    May/June 2014 p11
  6. darkvoid

    Biology; Chemistry; Physics: Post your doubts here!

    For moles practice as much as you can , I know there is less time but still. Once you get the hang of it , its damn easy
  7. darkvoid

    Islamiat o level help required

    Yes I know it is possible to get a good grade without doing some topics, but there's no harm in doing it anyways to stay safe.
  8. darkvoid

    Islamiat o level help required

    I would recommend against leaving any topics in Islamiyat. Do everything including Caliphs because if you are unable to attempt a question from any other topic and you can't attempt the Caliph's one either, you'll be in trouble. It is best to keep all options open and avoid risk. If you want an...
  9. darkvoid

    Biology; Chemistry; Physics: Post your doubts here!

    I don't think this is O level's , you have posted in the wrong forums perhaps.
  10. darkvoid

    Biology; Chemistry; Physics: Post your doubts here!

    Yes, do Atps in the end , they are short and can be done fairly quickly. Hope it all goes well for all of us.
  11. darkvoid

    Biology; Chemistry; Physics: Post your doubts here!

    MCQ 29 is C because: Desalination is used to remove salt from seawater and salt is soluble. The question asks for insoluble substances. Chlorination has nothing to do with impurities as it kills bacteria and makes the water hygienic. Options A and B are therefore wrong. Filtration separates...
  12. darkvoid

    Biology; Chemistry; Physics: Post your doubts here!

    MCQ 24: B In part A silver chloride will form (insoluble so precipitate will form) In part C lead(II) chloride again is insoluble In part D silver chloride forms again. In part B sodium chloride forms which is soluble so no ppt. MCQ 29: C Desalination removes salt from seawater, salt is...
  13. darkvoid

    Biology; Chemistry; Physics: Post your doubts here!

    Yeah I'm working on that. Been trying to write as much as possible. A question I have, in the one word topics, we can take any approach right? For example , if the topic is "faces" we can take a philosophical approach or write a story, right? As long as the content stays relevant ofcourse. The...
  14. darkvoid

    Biology; Chemistry; Physics: Post your doubts here!

    Atps shouldn't be too much trouble. Weightage is low for atps. Do as many papers as you can but it would be wiser to focus more on p2. Finish P2 first since Atp is a little general. There is a graph in each , for Bio sometimes drawing. Mostly about how you can improve investigations. For Chem...
  15. darkvoid

    Biology; Chemistry; Physics: Post your doubts here!

    Yep done with everything including Atps. Yeah English worries me as well. I have strange problem in English. I can't come up with good stories. My stories suck but everything else is good. I just go blank sometimes when trying to come up with a nice story. Are you appearing for both Maths and...
  16. darkvoid

    Biology; Chemistry; Physics: Post your doubts here!

    Well, I am done with all pastpapers from 2005 - 2015 for Sciences. Currently I'm doing Maths 2015 papers. I guess I will focus on English now and read topics again from the book especially for Bio. It is best to switch to the book now if you are done with pastpapers.
  17. darkvoid

    Biology; Chemistry; Physics: Post your doubts here!

    Circuits in which there is a delay, before current starts flowing, like the alarm you don't want it to go off immediately after setting it when you still haven't left your house. Yeah appearing for May/June 2016 English,Math D, Physics , Chem,Bio
  18. darkvoid

    Biology; Chemistry; Physics: Post your doubts here!

    Sorry for the late reply , I'm not really that active on these forums. Transistors (as far as I know) are not included in our syllabus. For capacitors , I don't know too much but I can tell a little on what I know. Generally capacitors are used in time delay circuits as mentioned before...
  19. darkvoid

    Photography!! ❤

    Yeah , the landscape ones were taken in Sweden :)
  20. darkvoid

    Photography!! ❤

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