• We need your support!

    We are currently struggling to cover the operational costs of Xtremepapers, as a result we might have to shut this website down. Please donate if we have helped you and help make a difference in other students' lives!
    Click here to Donate Now (View Announcement)

Search results

  1. kiran11

    AS Biology P1 MCQs Preparation Thread

    please help w11 variant 11 Q24
  2. kiran11

    AS Biology P1 MCQs Preparation Thread

    very helpful! i also had a problem with this question. thank u!!
  3. kiran11

    yeah i got it u r not rida lol! sorry! and yes Ameen :)

    yeah i got it u r not rida lol! sorry! and yes Ameen :)
    • kiran11
    • Profile post comment
  4. kiran11

    rida is that u??

    rida is that u??
    • kiran11
    • Profile post comment
  5. kiran11

    sorry?

    sorry?
    • kiran11
    • Profile post comment
  6. kiran11

    Chemistry: Post your doubts here!

    for q 18 see the atomic radius and ionic radius graphs from any book for period 3, u shud memorise it for q 20 the products formed are CH3COONa and C3H7OH , find there molecular mass, and then percentage by mass for 7 i did 2+x=2+x/2 (but this may not b right way, anywyz i got my ans correct)
  7. kiran11

    Chemistry: Post your doubts here!

    please explain q 24 http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Chemistry%20(9701)/9701_s12_qp_12.pdf
  8. kiran11

    Chemistry: Post your doubts here!

    ok thank u i got it now. thank u so much!
  9. kiran11

    Chemistry: Post your doubts here!

    i didnt see NaOH, sorry :-s
  10. kiran11

    Chemistry: Post your doubts here!

    i am sorry but i still have confusion :( whr did the 6 and 2 came from to multiply with c-h nad c-cl
  11. kiran11

    Chemistry: Post your doubts here!

    http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Chemistry%20(9701)/9701_s12_qp_12.pdf Q10, i have confusion btwn B and C
  12. kiran11

    Chemistry: Post your doubts here!

    yes but how we will choose btwn C and B option of the same question?
  13. kiran11

    Chemistry: Post your doubts here!

    how shall we come to know which molecule has largest overall dipole as in Q10http://papers.xtremepapers.com/CIE/...20Level/Chemistry%20(9701)/9701_s12_qp_12.pdf
  14. kiran11

    Chemistry and Physics AS paper 12 MCQS

    how shall we come to know which molecule has largest overall dipole as in Q10http://papers.xtremepapers.com/CIE/...20Level/Chemistry%20(9701)/9701_s12_qp_12.pdf
  15. kiran11

    A Level Subjects in Roots College International (RCI)

    Computing, Thinking Skills, ICT in Roots DHA 1
  16. kiran11

    Q2 B. Number of Moles = 120/24000 = 5x10^-3 moles Mr = mass/moles Mr = 0.23/5x10^-3 Mr = 46...

    Q2 B. Number of Moles = 120/24000 = 5x10^-3 moles Mr = mass/moles Mr = 0.23/5x10^-3 Mr = 46.. Now test each one out.. 14x+16y should be 46.. It happens in B. 14*1+16*2=46
  17. kiran11

    for Q9 let X2=A Y2=B X2y=C C^2/(A^2)*B=2 C^2=2*(A^2)*B SQUARE ROOT BOTH SIDES WE GET...

    for Q9 let X2=A Y2=B X2y=C C^2/(A^2)*B=2 C^2=2*(A^2)*B SQUARE ROOT BOTH SIDES WE GET C=(2^0.5)*A*(B^0.5) anything raised to 0.5 means it is square rooted ok now for equation 2 we have A*(B^0.5)/C PUT IN VALUE OF C WE GET A*(B^0.5)/(2^0.5)*A*(B^0.5) thus we get 1/(2^0.5) as required by question
  18. kiran11

    (may june 07)for question 6 u need to have an understanding of the hydrogen bonds hten this is...

    (may june 07)for question 6 u need to have an understanding of the hydrogen bonds hten this is very easy. JUst see which one forms hydrogen bonds. Cl cannot form neither can Co2Ch3 amongst CN and OH we can see that oxygen has more lone pairs than N thus we chose OH
  19. kiran11

    thank u

    thank u
    • kiran11
    • Profile post comment
  20. kiran11

    whats the concept behind Q11,(answer) may june 2007 chemistry

    whats the concept behind Q11,(answer) may june 2007 chemistry
Top