• We need your support!

    We are currently struggling to cover the operational costs of Xtremepapers, as a result we might have to shut this website down. Please donate if we have helped you and help make a difference in other students' lives!
    Click here to Donate Now (View Announcement)

Search results

  1. Abu mota

    Physics, Chemistry and Biology: Post your doubts here!

    ok, SO2 is a covalent compound, this means that the atoms must have oxidation states that cancel each other and as oxygen will always be -2 then we need sulfur to cancel it out i.e in SO2 the oxygen has an oxidation state of -4 (-2x2) and so inorder to cancel it we need +4 and so sulfur must be...
  2. Abu mota

    POST YOUR BIO AND CHEM PAPER 1 DOUBT HERE !!!!

    use the periodic table and check the proton numbers on the periodic table, the answer is C because proton number 12 and 14 and 16 are all not noble gases and so they can react, however in the others they have noble gases which dont react.
  3. Abu mota

    Physics, Chemistry and Biology: Post your doubts here!

    when i do multiple choice i do it by eliminating the wrong answers and so i eliminated 3 and 4 as in the sodium solution hydrogen will be produced and not the sodium metal, however in the copper solution, the metal will be produced and it isnt 1 because in electrolysis the metal is deposited on...
  4. Abu mota

    lol

    lol
    • Abu mota
    • Profile post comment
  5. Abu mota

    it isnt my name lol, my name is mostafa but what does Abu mota mean in urdu? in arabic it means...

    it isnt my name lol, my name is mostafa but what does Abu mota mean in urdu? in arabic it means the father of death lol :D
    • Abu mota
    • Profile post comment
  6. Abu mota

    BAN MUSIC CAMPAIGN - For Muslim brothers and sisters

    wa alikum elsalam :D to be honest i didnt listen to it, i just read the lyrics but why is he comparing between the quraan and music, in my opinion they are very very different from each other and btw i dont spend a cent on music lol :p and also u still didnt answer my question why cant i do...
  7. Abu mota

    Physics Paper 3 2012 discussion (I have the qp)

    tyvm bro :D
  8. Abu mota

    Physics, Chemistry and Biology: Post your doubts here!

    for Q.11 copper is below hydrogen in reactivity and so it will be deposited on the electrode, however sodium is above hydrogen in the reactivity and so hydrogen will be produced instead of the metal (this cancels out 3 and 4) leaving 1 and 2 will it be the anode or the cathode? will it must be...
  9. Abu mota

    Physics, Chemistry and Biology: Post your doubts here!

    for Q.1 inorder to smell something it has to diffuse into your nose and so the further away it diffuses the easier it will be to smell it :D for Q.7 the answer is C because the carbon shares 4 electrons and hydrogen each share one electron and so 4+(4x1)=8 :D for Q.11 well u need the formula...
  10. Abu mota

    POST YOUR BIO AND CHEM PAPER 1 DOUBT HERE !!!!

    well this is an endothermic change so the temperature must decrease, this means that we cancel C and D now we have A or B, will the temperature change halve or double if u halved the amount of water, well it will double because when the volume is small the heat will not be as spread around as...
  11. Abu mota

    Physics, Chemistry and Biology: Post your doubts here!

    Hi, srry also for the late reply for Q.3 actually in the question it says half of the flower and so it only shows half the number of stamens i.e it has more stamens and the answer is D btw for Q.29 the answer is D because growth is defined as the increase in dry mass, u never use fresh mass...
  12. Abu mota

    Physics, Chemistry and Biology: Post your doubts here!

    Hi, srry for the late reply. for Q.24 he is saying which will not remove the colour of bromine i.e which will bromine willnot be able to displace and these are itself and chlorine and so the answer is A for Q.25 copper doesnt react with water at all ,zinc and iron have to be heated to react with...
  13. Abu mota

    BAN MUSIC CAMPAIGN - For Muslim brothers and sisters

    Hi, i dont agree with u, Allah said in this ayah the meaningless speech or amusement speech but not all of the songs are meaningless in my opinion some can teach new stuff about life and give u hope in life and such, ik u will say that why not read the quraan it has everything u need, well i...
  14. Abu mota

    Physics, Chemistry and Biology: Post your doubts here!

    for 3 ask that's me she will explain it alot better than me :D for 6 it asks for what must occur and so it is B as all of the atoms have the same number of electrons on the first shell, the rest it can be true and can also be false. for 18 u need to memorize than zinc dissolves in both and so it...
  15. Abu mota

    Physics, Chemistry and Biology: Post your doubts here!

    Look at the graph, one says the number of cells and the other shows the dry mass. ;) the rest is obvious i think but if u dont know still ask :D
  16. Abu mota

    Physics, Chemistry and Biology: Post your doubts here!

    may/june 2009 and Q.16 dont understand it :/ Link:http://78.159.163.29:9204/745DAE5D2A141ADFF3D88BDA985A11CD0A539295405AB2A5CCD30BA42373DE050888461646F337B2E2BEE7400/www.xtremepapers.com/papers/CIE/Cambridge%20IGCSE/Biology%20(0610)/0610_s09_qp_1.pdf
  17. Abu mota

    Physics Paper 3 2012 discussion (I have the qp)

    Actually he isn't forced to give u what you want, he did it because he wants to help others for nothing in return and he did help me and as far as I know u don't even take variant 1 so GTFO of this thread.
  18. Abu mota

    Physics, Chemistry and Biology: Post your doubts here!

    because water is made up of hydrogen and oxygen. and hydrogen is diatomic with single bonds so 2 and also oxygen is diatomic but it has double bonds as oxygen has a valency of two and this is 3 and so the answer is 2 and 3 which is C if u dont understand ask again :D
  19. Abu mota

    Physics, Chemistry and Biology: Post your doubts here!

    it is may/june 2007 and the answer is magnesium cannot be reduced by carbon but the other metal can be reduced by carbon
  20. Abu mota

    Physics, Chemistry and Biology: Post your doubts here!

    tyvm i really appreciate ur very very hard work :D i understood them all now :D inshallah you get A* in every subject u take :D
Top