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  1. S

    How did Physics M/J '17 52 go?

    The frequency that the question mentioned was "frequency of the turntable" and not frequency of the power supply as far as I remember. The frequency of power supply and frequency of turntable are likely different things
  2. S

    How did Physics M/J '17 52 go?

    For question 1, I used slow motion video camera with timer alongside a dot marked on turntable edge to calculate "t", hence f=1/t at the point when mass starts to slide. Variable power supply to vary motor's rotation speed. For question 2, most people had gradient near 0.140 ( Mine was 0.143) ...
  3. S

    Ticl4 ionic or covalent?

    Its indeed a misery. I am not yet sure whether its covalent or ionic. As I said, half of the internet says ionic and other half says the opposite.
  4. S

    Ticl4 ionic or covalent?

    UMAIMA, low melting point doesnt always mean COVALENT. Fyi, the bonds between ionic may be extremely strong and IONIC but the intermolecular forces may be weak causing them to have low M.P As per our syllabus, we are not expected to learn that Metal+Non metal can be covalent as an exception. We...
  5. S

    Ticl4 ionic or covalent?

    Metal + Non metal = Covalent, thats what we should know as per the syllabus. CIE should not expect us to know the exception. As for TiCl4, it has both IONIC and COVALENT bonds I guess ( but majority covalent). Half of the internet says IONIC and other half says covalent. And their reasons...
  6. S

    chemistry atp

    .
  7. S

    chemistry atp

    Not the same question, that question has two possible answer Green/colourless because it says before end point, BEFORE end point can be before adding Pot. Man(green) or after adding pot. mang. (colourless) SO TWO POSSIBLE ANSWER. But this time, they indicated clearly, before ADDING Pot. Mang...
  8. S

    chemistry atp

    The question was different. In M/j 15 it said, what is the colour , BEFORE P is ADDED ________ and At end Point ___________ Before P ( potassium Mang.) is added the solution cant be colourless. It would be the natural colour of Fe2SO4 (green salt) Before P is added, its green.When P is added...
  9. S

    Physics ATP- 5054/42, May/June 15 Questions

    The CIE examiners and Allah knows for sure :p
  10. S

    chemistry atp

    That would be fine I guess
  11. S

    Biology 5090 May/June 2015 question Queries?

    What was the answer of question 5 ? Concentration of magnesium and oxygen in choloroplast in sunlight ? I chose both high
  12. S

    Biology 5090 May/June 2015 question Queries?

    It was diabetes for sure
  13. S

    Biology 5090 May/June 2015 question Queries?

    First blank was aa because she/he could not smell and a was recessive allele.
  14. S

    chemistry atp

    Sorry bro, FayadC got it right. As number of C atoms increase the energy released per mole increases.
  15. S

    Biology 5090 May/June 2015 question Queries?

    I chose C on that. Btw, what did u chose on 39 and 40 the last two. for 40 I chose A, and for 39 I chose father's sperm mutation ( forgot the option number)
  16. S

    Biology 5090 May/June 2015 question Queries?

    What about the first ques, What are the essential nutrients needed for nutrient solution ? ( 2 marks ) -- 1st question
  17. S

    Biology 5090 May/June 2015 question Queries?

    What did you write on this question, What are the essential nutrients needed for glucose solution ? ( the first question) -- 2 marks
  18. S

    Physics ATP- 5054/42, May/June 15 Questions

    I w I wrote 50 like many of my friends and the people here :/
  19. S

    Biology 5090 May/June 2015 question Queries?

    What did you write about syphilis cause and symptom ? I wrote : Caused by bacterium Sexually transmitted during intercouse Body fluids coming in contact first stage, sore on skin Sore disappears if not treated Rashes in second stage Final stage, mental disorder Different organs may be damaged...
  20. S

    Biology 5090 May/June 2015 question Queries?

    9.aa 10. Aa 11. I wrote about the chances of their child(ren) to have homozygous recessive allele SINCE they may have inherited mutated gene from same grandfather or older generations,thus leading to the express of phenotype due to mutated allele when homozy. recessive. 12. I drew the 2nd...
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