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  1. D

    Chemistry: Post your doubts here!

    Revise everything, so that no question related to learned/basic stuff get wrong.
  2. D

    Chemistry: Post your doubts here!

  3. D

    Chemistry: Post your doubts here!

    So i gave the wrong answer :p my prep not looking too good :/ You explained really well here. (y)(y)(y)
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    Chemistry: Post your doubts here!

    Which paper pls?
  5. D

    Chemistry: Post your doubts here!

    CH3CHOH/CH3CO branch (Or should i say group?:P) will always give a yellow ppt.
  6. D

    Chemistry: Post your doubts here!

    I also seem to mess up isomers a lot! thanks for the advice : p we now have a few hours to discuss q's. I have decided to also revise the entire syllabus. So that will take around 3-4 hours too.
  7. D

    Chemistry: Post your doubts here!

    Metallic9896 :p tips!!! Especially for timing! i seem to take extra 10-15 minutes for chem!
  8. D

    Chemistry: Post your doubts here!

    That's what we always use! I take it as a rule.. don't know the reason behind it.. But i think it's that the temperature change that occurs, is of the "solution" so we consider the mass of the solution.
  9. D

    Chemistry: Post your doubts here!

    I made the mistake of using wrong mass in p34 cuz it was tough and my mind stopped working :p the mass in this in 25cm3 of each.. so 50cm3 total. Put in formula and you get the correct answer...Remember that the mass used is always of the liquid..
  10. D

    Chemistry: Post your doubts here!

    Went well :) so for q27. All are 2 carbon structures. q. asks for all possible "oxidation products" without telling any reagent. So the products possible considering secondary alcohol, can contain either acid group or/and aldehyde group. So consider all the possible combinations i have stated in...
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    A level Biology: Post your doubts here!

    i am so sorry but there is a limit of 5 members in a conversation.... So if you want to know answers to any q's you can pm me the q. and i can ask the answer and tell it to you..
  12. D

    A level Biology: Post your doubts here!

    Added but please contribute by sharing q's u remember.
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    A level Biology: Post your doubts here!

    This did help!!! thanks for saving my time and a mark!!!
  14. D

    A level Biology: Post your doubts here!

    yeah that was happening in many q's. Overall it didn't went that bad, considering i never get above 30-33 :p
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    A level Biology: Post your doubts here!

    C for sure.
  16. D

    A level Biology: Post your doubts here!

    A is wrong as it talks about "animal antibiotics" not penicillin (Not a good explanation i know :p ). D sounds wrong as if the antibiotic kills gut bacteria (it does not say "only human gut"), it would not be used in animal feed in the first place.
  17. D

    A level Biology: Post your doubts here!

    Good Luck guys!! sleep is necessary for focus :p I hope the paper is easy and we all nail it!
  18. D

    A level Biology: Post your doubts here!

    Thanks!!(y)(y)
  19. D

    A level Biology: Post your doubts here!

    This one's the 2nd example. Ans C. But this is easy to answer.
  20. D

    A level Biology: Post your doubts here!

    I looked at "wall thickness".. C shows them to be very similar... while veins are relatively a lot thinner, compared to arteries. I also don't understand the other graphs "Exactly", But C can also be rejected, as it shows arteries/arterioles to have similar pressures, which is totally wrong as...
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