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  1. smart_boy

    Physics, Chemistry and Biology: Post your doubts here!

    Can anyone pls help me out with IGCSE Biology June 2012 Paper 12 Q16.... the ans in the ms is A but I cant understand why..????? Pls help asap as i hv my exam tomo..!!:(
  2. smart_boy

    Biology; Chemistry; Physics: Post your doubts here!

    Can anyone pls help me out with IGCSE Biology June 2012 Paper 12 Q16.... the ans in the ms is A but I cant understand why..????? Pls help asap as i hv my exam tomo..!!:(
  3. smart_boy

    how was biology paper 3??

    So do you remember what should hav been d ans..???
  4. smart_boy

    Any Type of Doubts in ENg Phy Chem Bio or Math....Ask me here!!!

    The reaction is 2NO + O2 --> 2NO2. If you see, all the chemicals are gases... I only know that NO2 is brown in colour and the rest of the gases are colourless... so how to calculate the amount fr product formed per unit time.....or calculate the usage of product per unit time...???? The...
  5. smart_boy

    Physics P3.. how was it?

    But wat the question said... was that - show that the resultant direction is the same as the centripetal force.. And i did exactly the same (as you said) but the logical direction accordin to the triangle law of vectors, ws coming just the opposite...!!!
  6. smart_boy

    how was biology paper 3??

    The hormone Bovine Somatotrophin.. Rmmbr there was a question on tat..??
  7. smart_boy

    Biology; Chemistry; Physics: Post your doubts here!

    Bcos it is a transition metal... Transition metals usually have catalytic properties.. Thats all u need to know fr this question...
  8. smart_boy

    Any Type of Doubts in ENg Phy Chem Bio or Math....Ask me here!!!

    I ve got a doubt..!! Pls help.. Suggest a practical method of investigating the rate of reaction of nitrogen monoxide reacting with oxygen.
  9. smart_boy

    how was biology paper 3??

    Hey..!! do u rmmbr wat wer the advantages and disadvantages of using BST..???
  10. smart_boy

    Physics P3.. how was it?

    Hi.. I gave 32.. And it was kinda okay..! Just wantd to ask abt that vector diagram of the plane.. If anyone knows the correct method and ans.. Cos i could hav screwed up... I just hope not..!!:(
  11. smart_boy

    Chemistry October/November 2012 Paper 32 how did it went ?

    Are you serious..!! It was very easy..!!! Mine went AWESOME..:)
  12. smart_boy

    Physics, Chemistry and Biology: Post your doubts here!

    Can anyone help me with this question...???
  13. smart_boy

    Physics, Chemistry and Biology: Post your doubts here!

    First u need to find number of moles by dividing mass by molar mass... 12.16/152= 0.08 Then u need to see in the equation.. that half the moles of Fe2O3 will form.. Because ratio is 2:1.... so u write there.. 0.04 Calculatin one mole of Fe2O3 is simple... (56x2)+(16x3)= 160 Mass equals no of...
  14. smart_boy

    Physics, Chemistry and Biology: Post your doubts here!

    Okay.. You need to understnd this concept calmly... U must be knowing about electromagnetic induction.. Whenevr u move a conducting wire inside a magnetic field, or when you move a bar magnet near a solenoid (coil of wire)... A voltage is induced in the wire.. that creates a current... So its...
  15. smart_boy

    Physics, Chemistry and Biology: Post your doubts here!

    Parallax error is when you dont view sumthng like a thermometer or a burette by keeping the eye parallel and get a wrong reading because of the error caused by the human eye..
  16. smart_boy

    Physics, Chemistry and Biology: Post your doubts here!

    That's an explanation... Can you please define the two terms, in proper language..??
  17. smart_boy

    Physics, Chemistry and Biology: Post your doubts here!

    Can anyone please tell me how to exactly define digital and analogue, in electronics..???
  18. smart_boy

    Biology; Chemistry; Physics: Post your doubts here!

    Which paper is this question exactly from..?? Because no such question is there in O level june 2002 paper 2...
  19. smart_boy

    Biology; Chemistry; Physics: Post your doubts here!

    When conc aq sodium chloride is electrolysed, chloride ions will go to the anode and will lose an electron each, to become chlorine gas... Get it..?
  20. smart_boy

    Biology; Chemistry; Physics: Post your doubts here!

    Thanks a lot..!!!
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