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  1. Aarjit

    Chemistry Paper 33 Purity% answer of CaCO3 and what were the metal and anions

    No, not if you've written the titer value in ink on the space provided: .............. cm^3 of FA1 reacted with 25.0 cm^3 of FA3/FA5. You're safe.:)
  2. Aarjit

    Chemistry Paper 33 Purity% answer of CaCO3 and what were the metal and anions

    Increasing the mass(m) of limestone lowers the % error; here's how: % error = d(m) * 100 ; clever,eh?...m [the %purity was inferred in a similar way, i.e. by sectioning the imperial mass with the total mass of CaCO3] :)
  3. Aarjit

    Hello Rashmit, Thanks. It sure is good to be appreciated. :) Rato Bangala School...

    Hello Rashmit, Thanks. It sure is good to be appreciated. :) Rato Bangala School [http://www.ratobangala.edu.np/]: my Alma Mater. Appearing for my AMCAS-MCATs this October, matriculating in December. My scores determine my aid, and whether it's Penn or Hopkins. ;)
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  4. Aarjit

    Writing in pencil !!! Please Help

    [http://uk.answers.yahoo.com/question/index?qid=20110510235137AAq89Vp] CIE practical level exam... is this a problem? In the first page of the cie exams it says to write in dark blue or black ink. The problem is that yesterday I did my biology practical exam and many of my answers (not all...
  5. Aarjit

    As of now, I have no institutional affiliation.. Attending university this fall.

    As of now, I have no institutional affiliation.. Attending university this fall.
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  6. Aarjit

    Chemistry Paper 33 Purity% answer of CaCO3 and what were the metal and anions

    I really don't think you can do anything about it now. When CIE sends you your SoR, bid for re-evaluation stating that your pen's gel-ink gradient was balked after you attempted to dye the highly-obscured-plasmolysed-onion-cells with it. :cool: Worrying now is futile. Rule your 9700/42! :)
  7. Aarjit

    Chemistry Paper 33 Purity% answer of CaCO3 and what were the metal and anions

    and yes, her paper was done in pencil.
  8. Aarjit

    Chemistry Paper 33 Purity% answer of CaCO3 and what were the metal and anions

    That, my friend, is a verbal excerpt from a skirmish between my friend and her Chem teacher when she got a 0/40 in her 9701/33 mock examination. ;)
  9. Aarjit

    Chemistry Paper 33 Purity% answer of CaCO3 and what were the metal and anions

    READ THESE INSTRUCTIONS FIRST 9701/33 Write your Centre number, candidate number and name on all the work you hand in. Give details of the practical session and laboratory where appropriate, in the boxes provided. Write in dark blue or black pen. You may use a soft pencil for any diagrams...
  10. Aarjit

    Chemistry Paper 33 Purity% answer of CaCO3 and what were the metal and anions

    You must be kidding me! How can you be so blasé, Whocares*? *no pun intended. ;) The invigilators in my center called all those who answered in graphite back and made them trace each and every word in their papers with ink. CIE standards and policies: utter fiasco! :cool:
  11. Aarjit

    Chemistry Paper 33 Purity% answer of CaCO3 and what were the metal and anions

    >>FA1 titres ~ 24.50 cm^3 and 18.50 cm^3 >>%purity of limestone ~ 75% >>Reaction in a(iii): Redox [I-(aq) gets oxidized, simultaneously reducing Mn(VII)] >>Oxidation states of Mn: +2 and +4 >>halides: Cl-(aq) and I-(aq)* >>Observation on adding HCl(l) to Cu(II)SO4 ~ blue solution...
  12. Aarjit

    Physics (9702/42) and Mathematics (9709/42) : 14 MAY

    Thread canceled.
  13. Aarjit

    No discussing questions before 24 hours; keep your integrity.

    No discussing questions before 24 hours; keep your integrity.
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  14. Aarjit

    ~A2 Physics (9702/42) and Mathematics (9709/42): 14 MAY

    http://www.xtremepapers.com/community/threads/a2-physics-9702-42-and-mathematics-9709-42-14-may.14661/
  15. Aarjit

    ~A2 Physics (9702/42) and Mathematics (9709/42): 14 MAY

    Thread CANCELED
  16. Aarjit

    Economics, Accounting & Business: Post your doubts here!

    Country | X | Y | rice | 9 : 1 | wheat | 6 : 1 | ideal trade (w.r.t wheat) = (9+6)/6 = 2.5 rice Ans: C. 1 wheat = 2.5 rice
  17. Aarjit

    Physics (9702/42) and Mathematics (9709/42) : 14 MAY

    A2 students portal: all the revision you need. We shall commence after 4 hours. ..though early leads will be appreciated.
  18. Aarjit

    Paper 12 maths

    I think you're referring to Q9 here, the one with A(4,6) and B(2,2). You'll lose the A1 mark + a mark for miscalculating B(2,2) ~ 2 marks. Albeit, you'll get the e.c.f. mark for the area. :)
  19. Aarjit

    Paper 12 maths

    the second term if a GP is 9 less than the first term. The sum of the second and third terms is 30. Given that all terms are positive*, find the value of the first term. a.r = a - 9 ; a.r + a.r^2 = 30 >> r = (a - 9)/a >> 30 = (a - 9) + a.[(a-9)/a]^2 >> 30 = a - 9 + (a-9)^2/a...
  20. Aarjit

    Paper 12 maths

    f(x) and f-1(x) are always reflections of each other in the line y = x, since you're interchanging y and x the very instant you commence deducing the inverse (often by making 'x' the subject). P.S. f(x) = 2x +5 and f-1(x) = (x-5)/2 are reflections of each other in the line y = x. :)
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