Chemistry Past Questions and Answers

Wine containing 8% to 17% ethanol can be converted to gin containing about 40% ethanol by

Which of the following substances could be responsible for the banana taste of a food flavour?

What is the organic product of the reaction of C<sub style='font-size: smaller;'>2</sub>H <sub style='font-size: smaller;'>5</sub>OH with excess acidified K <sub style='font-size: smaller;'>2</sub>Cr <sub style='font-size: smaller;'>2</sub>O<sub style='font-size: smaller;'>7(aq)</sub>?

The reaction of vegetable oil with a solution of wood ash is

What process does the following equation represent ? (C <sub style='font-size: smaller;'>6</sub>H <sub style='font-size: smaller;'>10</sub>O <sub style='font-size: smaller;'>5</sub>) + nH<sub style='font-size: smaller;'>2</sub>O → nC<sub style='font-size: smaller;'>6</sub>H <sub style='font-size: smaller;'>12</sub>O?<sub style='font-size: smaller;'>6</sub>