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  1. intelnehalem

    chemistry MCQs

    Q38 Answer is Ethanoic acid which is B ethanoic acid can react with ethanol to form ethyl ethanoate and it can react with Potassium hydroxide which is a base to form Potassium ethanote. It also reacts with sodium carbonate to form Sodium ethanoate, carbondioxide and water. here they are asking...
  2. intelnehalem

    chemistry MCQs

    Q 17 Answer is A When an alcohol is oxidised, a carboxylic acid is formed ! However,forming ethyl ethanoate during esterification and forming sodium ethanoate doesn't involve oxidation !
  3. intelnehalem

    chemistry MCQs

    Q12 : Copper electrodes so at anode Cu --> Cu2+ + 2e (anode dissolves) at cathode Cu2+ + 2e ---> Cu Copper is deposited on cathode. Overall concentration of Copper ions remain the same so electrolyte colour is blue!(no change) Answer is B
  4. intelnehalem

    Very Important Regarding English Paper 2

    Me too :cry: The very first question of passage 2 :(
  5. intelnehalem

    Very Important Regarding English Paper 2

    Are you sure? Can someone else confirm? :cry:
  6. intelnehalem

    Very Important Regarding English Paper 2

    yes dude I also answered to the tasks he did every morning :( I don't remember seeing anything regarding betrayal there :Search:
  7. intelnehalem

    Very Important Regarding English Paper 2

    I think the question was What are the things Hassan used to do every morning? I don't remember if there was anything about betrayal because the very next question was related to that :/
  8. intelnehalem

    Very Important Regarding English Paper 2

    hmm I wrote that he ironed his clothes and prepared breakfast :unknown:
  9. intelnehalem

    Transformation matrix

    Yes. If an object has more than one point, you arrange the x coordinates in the first row of the matrix and the corresponding y coordinates on the bottom row ex: For a triangle, (x1,y1) (x2,y2) and (x3,y3) are the vertices so the matrix is- x1 x2 x3 y1 y2 y3
  10. intelnehalem

    Transformation matrix

    I suggest you remember the transformation matrices your teacher has given you ! :) Otherwise you have to do this: (coordinate matrix of object) x (transformation matrix) = (coordinate matrix of image_ ex: 0 2 x a c = 0 4 1 0 , b d _ 2 0 matrix on LHS...
  11. intelnehalem

    Biology/Physics ATP Preparation Thread

    Here is another question which many might like! hint(this question might be tough): you have to use 2 crosses :D
  12. intelnehalem

    Biology/Physics ATP Preparation Thread

    My pleasure to be able to help ! :)
  13. intelnehalem

    Biology/Physics ATP Preparation Thread

    Actually, blood cells contain protein too :) Haemoglobin in RBCs is also a protein, They are also digested by the enzymes. If the stain is dry, the liquid part of the blood would have evaporated, so I don't think it would be appropriate to refer to blood plasma ! I should have mentioned dry...
  14. intelnehalem

    Biology/Physics ATP Preparation Thread

    Tips on testing for Reducing Sugar/lipids/Protein/Starch Starch: Crush and grind a given solid sample either you can make a solution with this or you can directly proceed to adding Iodine solution Place the sample on a WHITE TILE (important!!) Add Iodine SOLUTION (iodine disqualifies, it should...
  15. intelnehalem

    Maths, Addmaths and Statistics: Post your doubts here!

    Re: O'level Maths, Addmaths and Statistics help available he No problem ! :) Feel free to ask more questions dude :beer:
  16. intelnehalem

    Biology/Physics ATP Preparation Thread

    Answer to the biological washing powder question: Biological washing powders contain enzymes! [YOU NEED TO KNOW THIS TO ANSWER THE QUESTION] Take 2 equal sized material of the same type ex: Cotton Create an equally sized blood stain/fatty deposit on both the 2 clothes. Take 2 basins(or any...
  17. intelnehalem

    Biology/Physics ATP Preparation Thread

    oh was it in that paper? :) I ,too, have no idea what tap meters and tight connections mean ! Sorry dude :(
  18. intelnehalem

    Biology/Physics ATP Preparation Thread

    Thanks dude ! I hope we could discuss as many questions as possible :) Another bio question :D
  19. intelnehalem

    Biology/Physics ATP Preparation Thread

    I'll try and upload them by tonight :)
  20. intelnehalem

    Biology/Physics ATP Preparation Thread

    This is the circuit diagram and how the experiment is carried out. At room temperature, take the readings from the ammeter . Voltage is constant at 5V from the DC supply. Increase the temperature by 5C , observe the thermometer scale reading(line of sight has to be in line with the meniscus) to...
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