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  1. A

    paper 12 chemistry ...

    @bilal dun remember bro :(
  2. A

    paper 12 chemistry ...

    dat harmful or not harmful one questn is an another one....whch is Hydrogen..A
  3. A

    paper 12 chemistry ...

    in emission hydrocarbon has been burnt ...it doesnt depend upon dat 73% nitrogen in air ...LOL :D
  4. A

    paper 12 chemistry ...

    CO is ryt... :D....chkd on google :P
  5. A

    paper 12 chemistry ...

    whch coniine?? elaborate plzz
  6. A

    paper 12 chemistry ...

    hey wb dat questn...whch gas is more released in emissin in car exhaust....i go with carbonmonoxide??? sumone telin me water vapours :/
  7. A

    paper 12 chemistry ...

    @bilal ur ryt..it was 50 50
  8. A

    paper 12 chemistry ...

    can anyone remember abt da HBr react with halogeno alkane??? i got B??
  9. A

    paper 12 chemistry ...

    i also go 4 CH3+....carbon go 4 sp3 hybridization...so 3 H n one + chrge...buddy not sure cuz most of ma frnds got D
  10. A

    paper 12 chemistry ...

    wb dat 30th question....there are 2 thngs they told..i remeber 1 thng i.e it cant react with PCl3.....it go 4 ethyl ethanoate... D...m i ryt??
  11. A

    paper 12 chemistry ...

    its D for incomplete no. of shells
  12. A

    paper 12 chemistry ...

    @henry..yea i did A :D
  13. A

    paper 12 chemistry ...

    hey wb tht ....halogeno alkane chnging into carboxylic acid....isnt it A or C?
  14. A

    paper 12 chemistry ...

    its abt nov 08...the question was almost chnged... n yea i calculated...values are cumin same...
  15. A

    paper 12 chemistry ...

    how it can be alchol...when it was written tht X will not react carboxtlic acid to make ester!! :/
  16. A

    paper 12 chemistry ...

    its C for (2+x/2)...2P n 1Q n 1R...r produced...i solved it :D
  17. A

    paper 12 chemistry ...

    @prince 50% 50% is correct because it was repeated...
  18. A

    paper 12 chemistry ...

    for X i go 4 Alkane....but not sure ...cuz no alchol or ketone...n no carboxylic too..so option remaining is only alkane
  19. A

    paper 12 chemistry ...

    wht abt the angle of nitrogen one??? 107 ??
  20. A

    paper 12 chemistry ...

    Ash the percentage of mass one is 50% 50%...both :)
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