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  1. K

    Bio Paper 12 (24 hours passed) Discussion!

    but for mrna nuclei the high one was B as i recall
  2. K

    Chemistry: Post your doubts here!

    Under the Montreal Protocol the use of chlorofluorocarbons is to be phased out. Fluorocarbons are often used to replace them. One chlorofluorocarbon which was widely used as a solvent is CCl2FCCl F2 and large stocks of it remain. One process to use up these stocks is to convert it into the...
  3. K

    Chemistry: Post your doubts here!

    How many different substitution products are possible, in principle, when a mixture of bromine and ethane is allowed to react? A 3 B 5 C 7 D 9
  4. K

    Chemistry MCQ thread...

    where can u do a2 level
  5. K

    Chemistry MCQ thread...

    only like this impossible it is harder
  6. K

    Chemistry MCQ thread...

    How many hydrogen atoms in a molecule of glycerol, HOCH2CH(OH)CH2OH, may be substituted by deuterium on dissolving it in an excess of D2O? A 2 B 3 C 5 D 8
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