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  1. M

    Physics: Post your doubts here!

    http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Physics (9702)/9702_s09_qp_2.pdf In Both variants .. Q 7 b (ii) and (iii) Plz !! :)
  2. M

    Chemistry: Post your doubts here!

    gr8 (y)
  3. M

    A level Biology: Post your doubts here!

    Bro.. You are comparing two Diffrent things (Volume and Time).. For time measurement You also have to take account of your Human reaction time which is About 0.3-0.5s .. so We always round our values to nearest Second. :)
  4. M

    AS BIOLOGY TOPICALS HERE...

    What Years Does this Contain?
  5. M

    AS BIOLOGY TOPICALS HERE...

    Yes.. All Are Correct Except That One...!! (y);):)
  6. M

    AS BIOLOGY TOPICALS HERE...

    Q82 In Chapter 5 Mcq. Ms Says its C.. which Is A!! Plz correct it! (Same Mcq is 75 which gives correct ans A)
  7. M

    A level Biology: Post your doubts here!

    Plz refer to this http://cnx.org/content/m44429/latest/Figure_06_05_04.jpg
  8. M

    A level Biology: Post your doubts here!

    Q18) (A) First Column says "difference in cells at X in solution Y compared to the same cells in solution W" If u look at both cells in Diagram 2 the cells are More Turgid i.e More Water in them which means Water potential nearer To Zero (Less Negative). And Second Column says Diffrence in...
  9. M

    Physics: Post your doubts here!

    THE BODY IS IN EQUILIBRIUM so The Moment Produced By the force should Equal to the torque in Strings So they cancel Out to Give ZERO net Force..!
  10. M

    A level Biology: Post your doubts here!

    You Are welcome.. If any Doubt Feel Free to Ask :) ;)
  11. M

    A level Biology: Post your doubts here!

    Q30) It says Mucus is increased which causes More exocytosis in Goblet cell So option 2 is wrong. Only Ans without 2 is B. Q36) I m Confused Between A and C. I would rather go with C (firstly Mark scheme says So) and Secondly Parasite lives in liver and RBC so vaccine don't Reach there. A says...
  12. M

    A level Biology: Post your doubts here!

    Nov 2012 (v2) Q38) (c) iF x decreased so the primary producer Increased causing the Empty Circle to Increase ( bcz they have more food) This inturn Increased B and C. But B also increased A so No change it overall population of B. C is top Carnivore so they remained Most! Q21)B it says Two...
  13. M

    A level Biology: Post your doubts here!

    June 2012 (v2) Q10) It must be Reducing sugar. ANS IS B. Sucrose is Non -reducing. Q27) Ans is D.. All 4 of them are found In Blood plasma, so They r also present in Tissue fluid and lymph (because these r made from Leaked blood plasma) Nov 2012 (v2) Q1)Greastest number of cells mean Least...
  14. M

    A level Biology: Post your doubts here!

    Q14:- 1. Option 1 Is wrong because inhibitors of enzyme reactions bind to the enzyme / substrate complex so The Active site doesn't Change Shape.. so answer could only Be C or D. 4.V(max) is never increased with Inhibitor. so Option 4 is wrong. Only Ans without 1 and 4 is is C..! Hope i Helped!!
  15. M

    A level Biology: Post your doubts here!

    Ohh.. In Ms it says I (ignore) ref to any tumors!! In M.s "ignore (risk of), tumour formation / cancerous growth "
  16. M

    A level Biology: Post your doubts here!

    You r Welcome :) Risk of tumor? Where do they say that? I dont Think there would be Any Tumors???
  17. M

    Chemistry: Post your doubts here!

    Welcome!! :)
  18. M

    Chemistry: Post your doubts here!

    36:-A Option 1: NO + 1/2 O2 gives NO2 so the oxidation number does increase by Two!! Option3:-Yes it is polar... If you compare the electronegativities Oxygen is around 3.5 and N is 3.0 approx. If 1 and 3 are correct no need to look at 2 :p Direct ans is A!! Sorry For being Lateee :)
  19. M

    Chemistry: Post your doubts here!

    Q40:-D first form an equation:- CH3COOH + Ca gives (CH3COO)2Ca.. because Ca is 2+ and Acid is 1-!! 2(CH3COO) IS EQUAL TO C4H6O4!! so One is correct!! Others are dionic meaning having two COOH groups so they would never form C4H6O4Ca!!
  20. M

    Chemistry: Post your doubts here!

    Its Ok :)
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