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  1. H

    tough titration question.....

    http://www.xtremepapers.me/CIE/Internat ... _qp_31.pdf ....check it out....its mighty long.....by the way anyone cud help me out in part C
  2. H

    2010 nov ERs

    when will they come planetmaster.......??? just 13 days left in exams!!!
  3. H

    testing for chloride.....

    Candidates should be aware that hydrochloric acid should not be used in conjunction with silver nitrate when testing for a chloride. Nitric acid is the only acid that can be used successfully with lead nitrate to test for chloride CN somebody expalin me why is this.......that was taken from ER
  4. H

    bio practical....

    http://www.xtremepapers.me/CIE/Internat ... _qp_33.pdf how shud its result table look like for question 1
  5. H

    qualitative analysis help...

    if for e.g we were given coloured solution like copper chloride which is blue and chromium chloride how cn we test for halide ion....b/c solutions are coloured and it will be smwat difficult to record white ppt
  6. H

    BIo exemplar material

  7. H

    practical guesses and IRs

    any IR info or guesses for as phy chem and bio practicalss
  8. H

    role of rhizobium...

    question....describe role rhizobium in root nodule.....3 marks.... well question is simple one.....but i cn only think of the following rhizobium fixes atmospheric nitrogen to NH4+ which can later be converted to nitrates to manufacture amino acids..... this is only 1 point ..how can i get full...
  9. H

    oct/nov 2010 phy paper 22

    http://www.xtremepapers.net/CIE/Interna ... _qp_22.pdf 2(b) can anyone draw it and post attachment here....want to see whether i have done correct
  10. H

    graticule....

    i hav used it hardly three times......so just wanted to know that when using it how we are positioning it onto the part of slide which we wanna measure...are we moving the slide left-right or rotating eye-piece ...plxx clear me this doubt....and any other tip when using it
  11. H

    important note organic chemistry

  12. H

    chem help

    Which salt is produced by adding aqueous ammonia to aqueous sulphur dioxide until just alkaline? A NH4 SO3 B NH4 SO4 C (NH4)2 SO3 D (NH4)2 SO4
  13. H

    help bio

  14. H

    false origin---bio graphs

    if date is starting at lets say 5 and ending at 10...can we use false origin or else graph will be concentrated in a smaall area?
  15. H

    physics query

  16. H

    bond angle

    wats bond angle in hydrogen sulfide
  17. H

    bond angle

    wats bond angle
  18. H

    determinng Kc ...practical....

    anyone here who has performed this practical....and can provide me with full practical details....
  19. H

    tuberculosis...

    how does tuberculosis affects lung tissue and why people with TB have a lower tidal volume? plx help.....cudnt find in book
  20. H

    help chem mcqs....

    doesn't the rate of reaction with hydrogen of halogens increase down the group
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