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  1. A*(a*)

    Stat v. 62

    how much marks will i lose if i forget to convert all permutations and combinations answers to 3 s.f? And how much marks will i lose if I wrote correct mean and var formulae but used incorrect 'p' in 'np' to calculate k and n.
  2. A*(a*)

    How was physics 9702 33

    Anyone with gradient 1.55 and intercept -2.4 sth?
  3. A*(a*)

    AS PHY PRACTICAL 33

    Are you confirmed its Q2 and would not involve graph na? and what people mean by marble here? the slope?
  4. A*(a*)

    AS PHY PRACTICAL 33

    If it is Q2 as u said? why aren't the people confirmed that we do not have to set the apparatus.?
  5. A*(a*)

    AS PHY PRACTICAL 33

    And what is the marble here? Is it the material marble of which the slope is made or a small ball? if it is a small ball as someone said then what do we have to do with the other ball given?
  6. A*(a*)

    AS PHY PRACTICAL 33

    I knw abt multimeters, Ammeters and Voltmeters would be easier to use I guess with lesser options
  7. A*(a*)

    AS PHY PRACTICAL 33

    are we getting multimeters or ammeters and voltmeters specifically?
  8. A*(a*)

    AS PHY PRACTICAL 33

    what is absolute uncertainty? Is it the uncertainty not multiplied by 100? like a reading on a meter rule is 5 cm so absolute uncertainty is 0.1/5 na? and % uncertainty is 0.1/5 *100 ? Am i correct?
  9. A*(a*)

    AS PHY PRACTICAL 33

    In chem same happpened!!! An almost repeated Nov 12 variant. It is true I guess. Please guys confirm it by 10
  10. A*(a*)

    AS PHY PRACTICAL 33

    yayyy! If the major question is on electiricity, nothing could get better than this! can you please confirm that does the electricity one has a graph in it?
  11. A*(a*)

    Chem 32 ANSWERS (salts ONLY)

    this was 33 . and it was nitrate not nitrite
  12. A*(a*)

    how was chemistry paper 22

    Guys I wrote Na :/ not appreciating that a co-valent chloride was asked :/ and Al is wrong . I collected from diff Mark schemes that Na and Mg dissolve in water but Al to S all chlorides react! It was v.v.tricky H seems to fit all the conditions, many of us would not even think of that!
  13. A*(a*)

    Hardest Chemistry MCQs ever.

    everything cleareed!! I can't thankyou enough :) SO the thing to remember is that salt can be converted to acid by acidification. I didn't see any such thing in coursebook, thanks for tellin me
  14. A*(a*)

    Hardest Chemistry MCQs ever.

    I've already asked my teacher about rest of the confustions in the slot, I am clearing the rest ones, some of these MCQs were, in real, not that hard, I agree. But I had to write this to draw attention of people :)
  15. A*(a*)

    Hardest Chemistry MCQs ever.

    So you are saying that Na+ can be replaced by H+ in acidification? Which reaction is this? :o
  16. A*(a*)

    Hardest Chemistry MCQs ever.

    thank youu so mucch :) May God bless you! this is all what i thought but isn't in all the options except C the Nitrogen atom doesn't involve the non-bonding pair(lone pair) of electrons? Or Am i not getting the question right? :/
  17. A*(a*)

    Hardest Chemistry MCQs ever.

    Can you please explain 18 and 39?
  18. A*(a*)

    Hardest Chemistry MCQs ever.

    wow! you are seriously genious!
  19. A*(a*)

    Hardest Chemistry MCQs ever.

    Can you please explain how is 39 C?
  20. A*(a*)

    Chemistry: Post your doubts here!

    https://www.xtremepapers.com/community/threads/hardest-chemistry-mcqs-ever.25075/
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