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  1. sj0007

    Physics, Chemistry and Biology: Post your doubts here!

    Check in the question, they must have mentioned 25 so 50 would use the double volume It's always like that!! :) :)
  2. sj0007

    Physics, Chemistry and Biology: Post your doubts here!

    Check in the question, they must have mentioned 25 so 50 would use the double volume It's always like that!! :) :)
  3. sj0007

    Physics, Chemistry and Biology: Post your doubts here!

    Yup it's correct!! But just add that the calculation should be equal to 90
  4. sj0007

    Physics, Chemistry and Biology: Post your doubts here!

    Yeah sure! Its like u have to describe the EFT thingy, What I have noticed is that sometimes writing the full form of the thing given enables u to gain a mark so just give the full form which is Electronic Funds Transfer at Point Of Sale Terminal Then go on describing the whole EFT thing...
  5. sj0007

    Physics, Chemistry and Biology: Post your doubts here!

    Thanks, any tip at this point is helpful!!! And thanks for the nitrogen cycle too, It helped alot!!!! (I nevr really understood it from the begginning!!!) :) :) :) :)
  6. sj0007

    Physics, Chemistry and Biology: Post your doubts here!

    Can anyone plzzzz post the nitrogen cycle in a logical order?
  7. sj0007

    Physics, Chemistry and Biology: Post your doubts here!

    Really????? God, I am scared now!
  8. sj0007

    Physics, Chemistry and Biology: Post your doubts here!

    Just practice, u will get the hang of summaries then......... that's what I did.......... :)
  9. sj0007

    Physics, Chemistry and Biology: Post your doubts here!

    Ummm................. guys what is a non endospermic seed?????
  10. sj0007

    Physics, Chemistry and Biology: Post your doubts here!

    Incase u haven't seen it, u can ask help from this thread for pakistan studies: https://www.xtremepapers.com/community/threads/igcse-may-june-2015-exams.36680/
  11. sj0007

    Physics, Chemistry and Biology: Post your doubts here!

    No, I am really sorry, no one really takes (at least not from my school) pakistan studies cuz like international students don't need to take that subject......... sorry :( and welcum :) Don't worry, just study and I am sure u will ace it!
  12. sj0007

    Physics, Chemistry and Biology: Post your doubts here!

    THANKU!!! That was pretty helpful!
  13. sj0007

    Physics, Chemistry and Biology: Post your doubts here!

    Yeah, 2014 was different................ even the practicals, I guess
  14. sj0007

    Physics, Chemistry and Biology: Post your doubts here!

    We know that the general formula for an alcohol is C(^n)H(^2n+1)OH and that the Mr of C and H is 12 and 1 respectively, so: 12n + 2n + 1 + 16 + 1 = 116 (oxygen - 16) 14n + 18 = 116 14n = 98 n = 7 So the molecular formula is, C(^7)H(^15)OH................ :)
  15. sj0007

    Physics, Chemistry and Biology: Post your doubts here!

    I agree with My Name, you should solve at least like two years so that u get a clear idea of the type of questions asked and how to answer them! :)
  16. sj0007

    Physics, Chemistry and Biology: Post your doubts here!

    Welcome!!! I am glad it helped!!! :)
  17. sj0007

    Physics, Chemistry and Biology: Post your doubts here!

    Okay (lol) we subtract it coz that volume has been used that is it is no longer in the cylinder So we consider the amount of volume present in the cylinder to know the number of inflated balloons :)
  18. sj0007

    Physics, Chemistry and Biology: Post your doubts here!

    There is another one too: Police - Potassium Sargent - Sodium Charlie - Calcium MACZITLe - Magnesium, Aluminium, Carbon, Zinc, Iron, Tin, Lead Has - Hydrogen Caught - Copper Me - Mercury Stealing - Silver Gold - Gold Plates - Platinum...................... :)
  19. sj0007

    Physics, Chemistry and Biology: Post your doubts here!

    Yes, just draw it according to the shape.............. Welcome :)
  20. sj0007

    Physics, Chemistry and Biology: Post your doubts here!

    Draw it like this: And then just write that X(1) + X(2) / 2 should be equal to 89 cm Hope u didn't mind me answering the question! :)
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