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  1. Mahnoorfatima

    Maths, Addmaths and Statistics: Post your doubts here!

    http://papers.xtremepapers.com/CIE/Cambridge%20International%20O%20Level/Mathematics%20D%20(Calculator%20Version)%20(4024)/4024_w13_qp_12.pdf In question 25 part c my answers 15... Whereas the method is fine! And it should be 45 but it's not. 150+(300-20k)=750 Can anyone tell me what's wrong in...
  2. Mahnoorfatima

    Maths, Addmaths and Statistics: Post your doubts here!

    http://papers.xtremepapers.com/CIE/Cambridge%20International%20O%20Level/Mathematics%20D%20(Calculator%20Version)%20(4024)/4024_w13_qp_12.pdf Question 22 part b.?
  3. Mahnoorfatima

    Maths, Addmaths and Statistics: Post your doubts here!

    Nearest tenth of a degree? Isn't it supposed to be 10? :/
  4. Mahnoorfatima

    Maths, Addmaths and Statistics: Post your doubts here!

    http://papers.xtremepapers.com/CIE/Cambridge%20International%20O%20Level/Mathematics%20D%20(Calculator%20Version)%20(4024)/4024_w10_qp_12.pdf Question 25 part a? .?
  5. Mahnoorfatima

    Maths, Addmaths and Statistics: Post your doubts here!

    http://papers.xtremepapers.com/CIE/Cambridge%20International%20O%20Level/Mathematics%20D%20(Calculator%20Version)%20(4024)/4024_w10_qp_12.pdf Question 21. The hell is this ?
  6. Mahnoorfatima

    Biology; Chemistry; Physics: Post your doubts here!

    Use an alkaline substance like calcium carbonate to remove sulphur dioxide from industries emitting this acidic gas which causes acid rain.
  7. Mahnoorfatima

    Biology; Chemistry; Physics: Post your doubts here!

    And in measuring the effect of concentration on rate of reaction, do we need a thermometer . It's an McQ where they ask that which one are we supposed to use, the options are a balance a clock a measuring cylinder and a thermometer. So do we use all four of them ?
  8. Mahnoorfatima

    Biology; Chemistry; Physics: Post your doubts here!

    There is this question in which on a chromatography paper one spot shows two spots (something like that) and another graph where the melting point is given . It's an Mcq can we say that the chromatography one is a mixture while the other is a pure substance..??? And adding mg to dilute h2so4 ...
  9. Mahnoorfatima

    Biology; Chemistry; Physics: Post your doubts here!

    http://papers.xtremepapers.com/CIE/Cambridge%20International%20O%20Level/Chemistry%20(5070)/5070_w08_qp_1.pdf Question 19 anyone?
  10. Mahnoorfatima

    Biology; Chemistry; Physics: Post your doubts here!

    I know that but if you check the ms they've written something about ca2+ not dissolving in excess.
  11. Mahnoorfatima

    Biology; Chemistry; Physics: Post your doubts here!

    http://papers.xtremepapers.com/CIE/Cambridge International O Level/Chemistry (5070)/5070_s09_qp_2.pdf A6 part d anyone? It's so weird. O.o
  12. Mahnoorfatima

    Biology; Chemistry; Physics: Post your doubts here!

    How many points of the summary do we need to write? I mean out of 5 marks how much is for the content points? Approximately how many points do we have to note down?
  13. Mahnoorfatima

    Biology; Chemistry; Physics: Post your doubts here!

    http://papers.xtremepapers.com/CIE/Cambridge%20International%20O%20Level/Physics%20(5054)/5054_s09_qp_1.pdf Question 37????
  14. Mahnoorfatima

    Biology; Chemistry; Physics: Post your doubts here!

    Can you explain it to me. In a summarised form. I can't get out anything of what you people said.:unsure:
  15. Mahnoorfatima

    Biology; Chemistry; Physics: Post your doubts here!

    I guess that person has probably got a name my friend. I'll have to read these whole pages to get the question I posted, :confused:
  16. Mahnoorfatima

    Biology; Chemistry; Physics: Post your doubts here!

    It is.
  17. Mahnoorfatima

    Biology; Chemistry; Physics: Post your doubts here!

    I don't get this crap! :(
  18. Mahnoorfatima

    Biology; Chemistry; Physics: Post your doubts here!

    http://papers.xtremepapers.com/CIE/Cambridge%20International%20O%20Level/Physics%20(5054)/5054_s13_qp_12.pdf Question 34?
  19. Mahnoorfatima

    Biology; Chemistry; Physics: Post your doubts here!

    But for the current to flow through 4.5 ohm resistor the switch s3 has to be closed , no? How can the current flow if the switch is open?
  20. Mahnoorfatima

    Biology; Chemistry; Physics: Post your doubts here!

    http://papers.xtremepapers.com/CIE/Cambridge%20International%20O%20Level/Physics%20(5054)/5054_w13_qp_12.pdf Question 7 and 29 anyone?
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