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Search results

  1. M

    How was 9701_w16_qp_52?

    same answer :) i explained that v will increase cuz mor ethanol or whatever chemical vapours will increase due to higher temp. this will increase V and the Vfin-V will decrease
  2. M

    How was 9701_w16_qp_52?

    yeah the paper was quite easy. but almost all papaer 5s of previous years were also easy so iguess the A* treshold will still be around 20-22 like previous years. Just out of curiosity how many marks out of 130 did u guys get at AS level
  3. M

    How was 9702_w16_qp_42?

    Inserting iron will increase the B value bcz it is ferromangetic. According F=BIL We can write as I=F/BL. Thus the current inversely prop to B value. Hence if B increases the I value decreases
  4. M

    How was 9702_w16_qp_42?

    i think we should us V drop rather than only the values of V. But thats just my thought. none knows till marking scheme is published :)
  5. M

    How was 9702_w16_qp_42?

    The speed of particle question was quite tricky and a new one. the E=V/d . we know maximum velocity is when no net force(equilibrium position in shm). so zer0 force acts when E=0. E=gradient of graph(Potential gradient). so find when gradient =0(bottom point of graph). find potential drop by...
  6. M

    How was 9702_w16_qp_42?

    the exact same question had come last years paper except it was a tyre bursting. See question 3 part B
  7. M

    How was 9702_w16_qp_42?

    i got max speed as 7000something and the next speed as 4000something yeah 1.5 ratio yeah the paper was quite easy. many questions were repeat of previous papers especially balloon burst and ice melt
  8. M

    9701_w16_qp_42 :D EASIEST :P

  9. M

    9701_w16_qp_42 :D EASIEST :P

  10. M

    9701_w16_qp_42 :D EASIEST :P

    2NaN3 --> 3N2+2Na the only way i got to know was becoz questio told it will decompose to its elements igot the n3- ion question wrong. according to wikipedia
  11. M

    9701_w16_qp_42 :D EASIEST :P

    did any of u find a time shortage and leave some questions blank? i left almost 6 marks empty thinking that i would have time to come back to it later i left that h formation and Cu percentage in brass halfways
  12. M

    9701_w16_qp_42 :D EASIEST :P

    the br-benzene-cooh group i think i dunno but in known the nh3-ch2-ch3 group is soluble due to h bonding
  13. M

    9701_w16_qp_42 :D EASIEST :P

    yeah i just memorized all that replication and structure n shit. its easy just memorize and vomit on the paper
  14. M

    9701_w16_qp_42 :D EASIEST :P

    whoops yeah thats what i meant. its a skeletal diagram .the H's dont matter :P
  15. M

    9701_w16_qp_42 :D EASIEST :P

    i really hated how they did NOT put stress to electrochem and polymerization and DNA stuff. i feel too many questions on hydrolysis of amides and way too many new questions compared to previous papers. i really hope the A* treshold is below 190/260 or else im screwed
  16. M

    9701_w16_qp_42 :D EASIEST :P

    i got F as (CH3)3CHHCOOH
  17. M

    9701_w16_qp_42 :D EASIEST :P

    what shape did u write the Ni complex? tetra or square planar
  18. M

    9701_w16_qp_42 :D EASIEST :P

    how did u do the ph question just use ph= -log(Ka)-log(ratio given) right????
  19. M

    9701_w16_qp_42 :D EASIEST :P

    it was too lenghty left 5 marks :(
  20. M

    a

    well, i found the sample candidate responses quite useful for igcse. taking as this year and the sample responses and examiner reports can be found now too(just not for the current year)
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