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Recent content by kshumaila52

  1. K

    cie teacher support

    About 10 aug
  2. K

    cie teacher support

    Here are Grade thresholds
  3. K

    cie teacher support

    here is chemistry, trying to upload Bio, Physics and math too but some net issue
  4. K

    Chemistry: Post your doubts here!

    Can any one explain why option 3 is wrong ???? Q 38 June 06 http://www.xtremepapers.com/papers/CIE/Cambridge%20International%20A%20and%20AS%20Level/Chemistry%20(9701)/
  5. K

    chem mcq!

    Ans c When no of moles of reactant are equal to number of moles of product then Kc=Kp
  6. K

    chemistry 1992-2001 mark scheme

    Its ok.......:-P fRom where did you get?? I want Bio and Chem.
  7. K

    chemistry 1992-2001 mark scheme

    Do u have papers??? If yes, can share??
  8. K

    help needed about reaction mechanism.

    I ll try to upload his Notes..
  9. K

    help needed about reaction mechanism.

    Read Question carefully ..Its Nov 08/41 Q2 In question it is mention that 1st step is the slowest step, then 2nd and so on... Keep in mind, slow step is rate determining step and ans it( Step before Slowest step ll also slow step as according to question) Our teacher(Sir faiz) give full...
  10. K

    Chemistry MCQ thread...

    I it is not available....i used my all resources but :(
  11. K

    Chemistry MCQ thread...

    ans is d (only 1 is correct) as tertiary halogenolakne shows 2 step reaction(SN1)
  12. K

    Chemistry MCQ thread...

    Ans is D already it contain 8 chiral carbon, and 4 ll more. 2ndly A is wrong because 4 mole required,not 3( 3 for alcohol and one for acid) B is wrong because 4(may 5) mole of H2 required, 2 for alkene, one for ketone and one(may be 2) for acid. C is wrong, because in acidic medium, hydrolysis...
  13. K

    Chemistry MCQ thread...

    ans B I2 is is formed after gain of electron (in HIO, oxidation state of I is +1, so gain 2 electrons to form I2) in HIO3, I is oxidise by loosing 4 electron. to keep loss ang gain of electron same, there must be 2 mole of I2. Best wishes for tomorrow :)
  14. K

    Chemistry MCQ thread...

    Q9. find mole of each (metallic salt=.005, mole of sulfate=.0025) compare molar ratio ( i mole of sulpfate reduces 2 mole of metallic salt) one mole of sulfate loose 2 electrons, so one mole of metal gain 1 electron( 2 mole gain 2 electron) if original was 3, then gain of 1e will be 2 Q10. i...
  15. K

    Chemistry MCQ thread...

    Consider initial mole of N2O4 =2, intial mole of NO2=0 after 50% dissociation, mole of N2O4=1, mole of NO2=2 (according to equation) total no. of mole=3, find partial pressure of each (N2O4=1/3atm and NO2=2/3atm) put values in formula and get ans. Best wishes for tomorrow
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