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  1. MShaheerUddin

    Physics: Post your doubts here!

    Torque of Couple = Force x Distance between two forces which is perpendicular to the line of action of force Here we will take vertical component of force (8Sin60) so that distance is perpendicular to it. 8Sin60 x 0.6 = 4.2 N
  2. MShaheerUddin

    Physics: Post your doubts here!

    Its B 4.2 N
  3. MShaheerUddin

    Chemistry: Post your doubts here!

    Help Needed urgent
  4. MShaheerUddin

    Chemistry: Post your doubts here!

    This?
  5. MShaheerUddin

    Chemistry: Post your doubts here!

    Why A is wrong? :(
  6. MShaheerUddin

    Chemistry: Post your doubts here!

    Sorry for asking too many questions :) Can you explain the above one What is the reason behind slower reaction Ans is D
  7. MShaheerUddin

    Chemistry: Post your doubts here!

    OMG ._. Srsly I can't believe it!
  8. MShaheerUddin

    Chemistry: Post your doubts here!

    Thank you so much :) Are you a graduate?
  9. MShaheerUddin

    Chemistry: Post your doubts here!

  10. MShaheerUddin

    Chemistry: Post your doubts here!

    THis?
  11. MShaheerUddin

    Chemistry: Post your doubts here!

    Ohhh You are so genius :D hats off
  12. MShaheerUddin

    Chemistry: Post your doubts here!

    what about middle carbon in 3 It also has 3 bonds and 0 lonepair (120)
  13. MShaheerUddin

    Chemistry: Post your doubts here!

    Can anybody explain this to me? Ans is B
  14. MShaheerUddin

    Chemistry: Post your doubts here!

    This is secondary alcohol but the point is, the sec alcohol must be like this ... "CH(OH)CH3" [Methyl group attached to the same carbon which is attached with OH group]
  15. MShaheerUddin

    Chemistry: Post your doubts here!

    Because only C has "CH(OH)CH3" group of alcohol which reacts with aqueous alkaline only when we talk about alcohol. note it down
  16. MShaheerUddin

    Come, fall in love with my beautiful Pakistan http://kptourism.com/

    Come, fall in love with my beautiful Pakistan http://kptourism.com/
  17. MShaheerUddin

    Chemistry: Post your doubts here!

    The simplest ratio of 4:2 is actually the value of n and p These value are find using the above method Then we would balance q Finally we will balance the reactants (m) This is the typical method followed when balancing the equation using Valancies Turn to page 112 of the book and see...
  18. MShaheerUddin

    Chemistry: Post your doubts here!

    Do you have a book of Lawrie Ryan and Roger Norris (the blue one) ?
  19. MShaheerUddin

    Chemistry: Post your doubts here!

    Understand? If no, then let me know i will recommend you something
  20. MShaheerUddin

    Chemistry: Post your doubts here!

    oxidation number of I in HIO is +1, in I2 is 0 and in HIO3 is +5 so HIO to I2 is (+1 -----> 0)x2 which is -2 because there is 2 Is in I2. and HIO to HIO3 is (+1------>+5) which is +4 ratio is -2:4 is 1:2 so mol ratio must be 2:1 Don't you get it ? :D
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