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  1. S

    BIO MCQ thread

    Oh I thought of it this way, Ψ = Ψp + Ψs Since it is isotonic, the water potential of the solution is equal to the Ψs of the cell, therefore Ψp has to be 0. correct me if i am wrong
  2. S

    Chemistry MCQ thread...

    Ok I guess 9 is common sense...C and D wont be the answer (acids and ketones are not used as fuels)... and i guess we know it from bio that a substance which is richer in Carbon-hydrogen bonds has a greater calorific value(its a fact so you can learn it).so the answer should be B
  3. S

    BIO MCQ thread

    shorbottom bekti shorboda huh? :P
  4. S

    Chemistry MCQ thread...

    38 should be A. 1 has 2 Cl substituents hence faster rate...and both 2 and 3 will have a faster rate as the bond enthalpy of C-Br and C-I is less than C-Cl.... NOTE: the graph doesnt level out, indicating the reaction completes much later.......at the end point the original curve, 2 and 3 will...
  5. S

    Chemistry MCQ thread...

    So I don't take elements above and below it? :S LOL, CIE's english is really Scottish :S
  6. S

    Chemistry MCQ thread...

    What exactly do they mean by NEIGHBOURS? shouldn't it in a normal way mean any atom next to it (up, down, left and right)?....In that cause B shouldn't be the answer (as Boron's second IE is greater than that of aluminium)
  7. S

    BIO MCQ thread

    Someone?
  8. S

    Chemistry MCQ thread...

    @zishi: yes I get it now :)...in D, area is decreased!
  9. S

    Chemistry MCQ thread...

    but Zishi why cant it be D?...the peak would be lower and to the right of the original curve. With an increase of just 10 degrees, there is a significant shift to the right. So shouldn't the shift at 500 degrees be much more to the right(as in D)? :S
  10. S

    BIO MCQ thread

    The answer to this is C, could anyone please explain?
  11. S

    Chemistry MCQ thread...

    A small increase in temperature, gives us a Boltzman distribution curve whose peak is to the right of the original curve right? So how is the answer B here? Should it not be D? where the peak is now much more to the right (at 500 degrees)
  12. S

    Chemistry MCQ thread...

    @Xthegreat: oh right! I get it now. Thanks :) @Zishi: Dont you mean the first alcohol cannot be dehydrated?
  13. S

    Chemistry MCQ thread...

    The answer to this is B. But why should it react differently with Conc H2SO4?...they are both primary alcohols (so rate of dehydration would be the same would it not?)....And even if one of them were secondary, then C would also have been the right answer( As secondary alcohols undergo Sn2 and...
  14. S

    Chemistry MCQ thread...

    Oh yes, thanks :D
  15. S

    Chemistry MCQ thread...

    But, doesnt polarity depend upon 'net dipole moment'? Sulfur has an equal dipole moment on either side both horizontally and vertically (as the differences in electronegativities between S and O remain constant), so doesn't this symmetry cancel out its net dipole moment? :S
  16. S

    Chemistry MCQ thread...

    Guys the answer to this one is A could you please tell me how it is polar? :S
  17. S

    Physics p22

    Ok guys, please tell me if the last question had asked for "phase difference" or "path difference" I thought I read path difference and wrote lambda and 0.5 lambda
  18. S

    Biology P22 Was Quiet Easy !!!!

    Hey please tell me if my answers are right. For Question 1(ii) i wrote: Because they have might not have begun with their new cell cycle, i.e they are still young in their life stages. for (iii) I wrote: They are not in a "resting" stage because here they undergo DNA replication in the S stage...
  19. S

    Math P1 doubt

    Find XO and XC then use, required angle= cos^-1 {( XO.XC)/ (|XO|x|XC|)}........(i) Solution : XO = -2i -j -2k XC = i -2j -k XO.XC= 2 |XO| x |XC| = 3 x 6^1/2 using the formula given in (i), Angle = 74.2 Hope it helps :)
  20. S

    about da w10 reports

    @workinghard: You are welcome :) @Zishi: So sorry, but I had only the sciences :(
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