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  1. L

    Chemistry: Post your doubts here!

    I was doubting it so I googled it. Must not take all the credit. :P
  2. L

    Chemistry: Post your doubts here!

    The bond dissocation energy is relevant to gasesous reactants.
  3. L

    Mathematics: Post your doubts here!

    Oh I really got this so there's still some hope. Thanks a bunch. Actually I was skipping the 9C4 thing in the second part because I wasn't considering the fact that those 4 positions could be any among the 9.
  4. L

    Mathematics: Post your doubts here!

    Still appreciate the fact that you replied. :p We literally studied the whole s1 in like 15 days and I can't make heads or toes of it now. :cry:
  5. L

    Mathematics: Post your doubts here!

    For this question p= 5/12 and q= 7/12. Can anyone explain what's wrong with how I am doing it. 1-(12C0*(5/12)^0 * (7/12)^12 + 12C1* (5/12)^1 * (7/12)^11)
  6. L

    Mathematics: Post your doubts here!

    In the first part why isn't 4C2*9C2*2C2 the right way to get to the answer since we have to choose from 4 9 and 2 types of tress? And part iiii as well please explain.
  7. L

    A level Biology: Post your doubts here!

    That's great. I was saying that from an A2's perspective. And yeah I think you would get the marks but studying in depth always helps. :)
  8. L

    Mathematics: Post your doubts here!

    Someone please explain Q5 part iii. Since X=0 why won't it be 12C0*(0.20)^0 * (0.8)^12 Also any trips and tricks on how to solve the permutations and combination questions like question 6 :cry:
  9. L

    A level Biology: Post your doubts here!

    That's alright. Just try to read out each topic from one more reference book, helps a lot with understanding. Also don't forget to consult your teachers notes.
  10. L

    A level Biology: Post your doubts here!

    The answer very much has all the points by the MS but I think it could be more detailed since it's an A'level answer. For example while describing the harvesting systems instead of just saying there are two primary pigments, you could explain these are chlorophyll a and chlorophyll b and...
  11. L

    A level Biology: Post your doubts here!

    Can anyone link any past paper question related to the interpretation of absorption and action spectra of chloroplast pigments?
  12. L

    Chemistry: Post your doubts here!

    Is the answer B? ^
  13. L

    Physics: Post your doubts here!

    for s05 6b, it follows from the current graph that as current varies in magnitude and direction the magnetic flux changes so the shape of the graph will be the same as that of the current and since induced emf is directly proportional to rate of of change of magnetic flux completing as many...
  14. L

    Physics: Post your doubts here!

    for s05 6b, it follows from the current graph that as current varies in magnitude and direction the magnetic flux changes so the shape of the graph will be the same as that of the current and since induced emf is directly proportional to rate of of change of magnetic flux completing as many...
  15. L

    Physics: Post your doubts here!

    For your first question A will be on the upper side of the region of field where the 1cm thing is written and B will be on the he lower line of the box next to the region of field and both come from Flemings left hand rule.
  16. L

    A level Biology: Post your doubts here!

    Not sure about that but this question can be a part of hormonal control etc since the answer is somewhere along those lines and that's very much in the syllabus.
  17. L

    A level Biology: Post your doubts here!

    Yeah see the last two boxes one species has 28 chromosomes and other and 14 chromosomes, each of them gives one chromosome from every pair means the one with 28 gives 14 and the one with 14 gives 7 so both chromosomes combine and make 21 that is the haploid number so the diploid number is 42...
  18. L

    A level Biology: Post your doubts here!

    What mark scheme says is that the doubling of the chromosome number is inevitable since the homologus chromosomes have to pair so if the the chromosome number has not doubled during the interphase it would have been possible to get a sterile hybrid just by the combination of two which itself is...
  19. L

    Thanks. Really.

    Thanks. Really.
    • leenz98
    • Profile post comment
  20. L

    This MJ. Im in A2.

    This MJ. Im in A2.
    • leenz98
    • Profile post comment
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