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  1. girlscampisra

    AS Chemistry GT

    whats UMS?? :s
  2. girlscampisra

    chem p12...hmm that was a tough one !!!

    yes it was a nice paper..
  3. girlscampisra

    chem p12...hmm that was a tough one !!!

    what did u guys find difficult in the paper?
  4. girlscampisra

    Chemistry MCQ thread...

    Nov 2006, Q9 (ans: C) Solution: -283 + delta H = 44 + (-286) delta H = 41 take 44 positive cause H20 gas to liquid is -44 so liquid to gas would be +44 !!
  5. girlscampisra

    Chemistry MCQ thread...

    Magnessium because they are same period, maybe!
  6. girlscampisra

    chemistry 34 threshold

    yep! carbonate was the anion.
  7. girlscampisra

    chemistry 34 threshold

    calculator? :s
  8. girlscampisra

    Chemistry P34. What i know

    round off nearest to 0.5 do not write impossible reading! and yes lead and aluminium ions can be distinguised by adding dil. sulfuric acid.. lead ppt is insoluble in acid while Aluminium ppt is soluble!
  9. girlscampisra

    Chemistry P34. What i know

    thanks man!! :))
  10. girlscampisra

    Chemistry P34. What i know

    umm, i can't get second part.. where the question says to calculate the moles of KMnO4 pipitted out of graduated flask.. will the ans be.. ANSWER TO PART (i) x 25/250 ??
  11. girlscampisra

    Chemistry P34. What i know

    the titration calculation is not clear in MS .. can anyone please explain me?? nov '08 P32..
  12. girlscampisra

    chem mcq...

    no its D!
  13. girlscampisra

    chem mcq...

    see there are 2 C=O bonds..
  14. girlscampisra

    chem mcq...

    there are 6 present already, and 2 carbonyl groups :s .. that makes 8 chiral carbon but as its not given in the option, i guess it'll reduce c=c too and in total there will be 9 chiral centres..
  15. girlscampisra

    chem mcq...

    how 7 chiral centres xHazeMx?
  16. girlscampisra

    chem mcq...

    Ca ions wont accept H+ ions so how'll it react with acid!
  17. girlscampisra

    physixx mcqs

    another way is just to check homegenity of equations :)
  18. girlscampisra

    chem mcq...

    9?
  19. girlscampisra

    chem mcq...

    which year Alisha?
  20. girlscampisra

    electro-magnetic spectrum

    yeah i just forgot to put the -ve signs
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