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  1. Mairaxo

    no really! theyre challenging :D

    no really! theyre challenging :D
  2. Mairaxo

    P1 MCQ's preparation thread for chemistry ONLY!!!!

    yeah sorry it does react and an O is attached to both ends of the double bond! my bad :P
  3. Mairaxo

    P1 MCQ's preparation thread for chemistry ONLY!!!!

    u mean sis :P nope it does not
  4. Mairaxo

    A level Biology: Post your doubts here!

    its already haploid so it wont undergo reductional division again
  5. Mairaxo

    A level Biology: Post your doubts here!

    dead is appoplast
  6. Mairaxo

    AS Physics P1 MCQs Preparation Thread.

    u dont have to find it quantitatively. just take ratios. Ratio of V:I is smallest for C so R is smallest :P
  7. Mairaxo

    AS Physics P1 MCQs Preparation Thread.

    U have to find R first. R=V/I At point A B and D, ratio of V:I will be higher as V is more than I so ratio will be higher than 1. At C they are almost equal so ratio will almost be 1 so its the smallest value of R
  8. Mairaxo

    Let's discuss Physics Paper 52!!!

    Nope you have to wait for 24 hours :)
  9. Mairaxo

    Chemistry and Physics AS paper 12 MCQS

    Lol no problem! Its hard to remember all this but the more you solve the easier it becomes and the more you remember :)
  10. Mairaxo

    Chemistry and Physics AS paper 12 MCQS

    your welcome :)
  11. Mairaxo

    Chemistry and Physics AS paper 12 MCQS

    No its a CHO according to what you wrote!
  12. Mairaxo

    Chemistry and Physics AS paper 12 MCQS

    A just has one CHO group so only 1 mole of HCN needed B needs 2 mol HCN but as it is a ketone it doesnt get oxidised so no colour change C also needs only one mol HCN as it has only one CHO group D has 2 CHO groups so 2 mol of HCN needed and CHO gets oxidised to acid so colour will also chnage...
  13. Mairaxo

    Chemistry and Physics AS paper 12 MCQS

    Oh wait .. D has two CHO groups right? Or is that an OH ?
  14. Mairaxo

    Chemistry and Physics AS paper 12 MCQS

    in A H2SO4 is dehydrating so removal of water will take place and a double bond will form forming propene. in B NaOH(aq) is used. it will only substitute Br with OH so propanol forms not propene. in C NaOH in ethanol will remove the Br and form a double bond instead so propene form. in D Al2O3...
  15. Mairaxo

    Physics, Chemistry and Biology: Post your doubts here!

    water in lake applies equal pressure everywhere. pressure is equally distributed on both the areas. only if the 2 areas are separated area will affect the pressure.
  16. Mairaxo

    Chemistry: Post your doubts here!

    Q13- all are soluble except CaCO3 so only it will precipitate Q20 - its hard to explain in written form. just draw the structures and their isomers and you'll get 8.
  17. Mairaxo

    AS Physics P1 MCQs Preparation Thread.

    Q4- substitute symbols by units. m^3/P = QS^2 then substitute P and Q using the options. Both sides should cancel eachother out Q20- first find magnitude equation. E=F*d and F=ma so E=mad. a=E/md and as d is X here a=E/mx then find direction. energy decreases towards Q means it is attracted...
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