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  1. F

    AS Biology P1 MCQs Preparation Thread

    http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Biology%20(9700)/9700_w10_qp_12.pdf Q8. the answer is C but why is the 4th statement correct
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    AS Biology P1 MCQs Preparation Thread

    Q7 Turgid plant tissue is placed in a solution which has the same solute potential as the contents of the cells. The diagram shows a cell after one hour. Which equation describes the value of the pressure potential for this cell? A pressure potential = solute potential of the cell B pressure...
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    AS Biology P1 MCQs Preparation Thread

    Q13 How does increasing substrate concentration affect the rate of an enzyme-catalysed reaction in the presence of a competitive inhibitor? A) The rate of the reaction decreases. B) The rate of the reaction decreases initially and then recovers. C) The rate of the reaction increases. D) The...
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    AS Biology P1 MCQs Preparation Thread

    Q7 Turgid plant tissue is placed in a solution which has the same solute potential as the contents of the cells. The diagram shows a cell after one hour. Which equation describes the value of the pressure potential for this cell? A pressure potential = solute potential of the cell B pressure...
  5. F

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

    thanks a lot :D
  6. F

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

    http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Chemistry%20(9701)/9701_s08_qp_1.pdf Q6 and 8. help please
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    P1 MCQ's preparation thread for chemistry ONLY!!!!

    oooh, yupp i got it :P thank you :D
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    P1 MCQ's preparation thread for chemistry ONLY!!!!

    Q12 Which chlorine compound has bonding that can be described as ionic with some covalent character? A NaCl B MgCl2 C AlCl3 D SiCl4 why is the answer B and not C??
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    Chemistry and Physics AS paper 12 MCQS

    http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Chemistry%20(9701)/9701_w04_qp_1.pdf Q12. why is the answer B? and not D
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    Chemistry paper 33 how was it?

    did anyone else find the salt analysis question messed up?
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    Chemistry paper 33 how was it?

    how many marks are you certain you'll be losing?
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    Chemistry paper 33 how was it?

    IT SUCKED! i feel like our salt was a bit contaminated in Q3. what do you think the GT will be?
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    how was chemistry paper 22

    wasnt the first questions equation : NH3 + H+ (equilibrium sign) NH4+ isnt that the definition of a weak base?
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    Chemi v2 discussion ?

    the water Q one did you chose the answer which did not include drinking?
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    EM paper 4

    how did you guys find paper 4??
  16. F

    Chemi v2 discussion ?

    you know the Q about the test for gases did you guys chose option B. i know its the lighted splint, but was the option B the lighted splint? Can't remember :(
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    Physics, Chemistry and Biology: Post your doubts here!

    http://www.xtremepapers.com/papers/CIE/Cambridge%20IGCSE/Chemistry%20(0620)/0620_w03_qp_1.pdf Q21.. please help!
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    Physics, Chemistry and Biology: Post your doubts here!

    you have to learn the test for anions and cations.. no other way!
  19. F

    Physics, Chemistry and Biology: Post your doubts here!

    but wont that form like somewhere in the middle? why does the cathode change into purple/blue.. it only contains Na+ ions which while the anode has OH- ions.. :S
  20. F

    Physics, Chemistry and Biology: Post your doubts here!

    acids are acidic due to the presence of H+ ions right? and alkalines are basic because of the presence on OH- ions?
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