Chemistry Past Questions and Answers

The most common type of chemical reaction which alkanes undergo is

Consider the following exothermic reaction<br/><br/>2SO<sub style='font-size: smaller;'>2(g)</sub> + I<sub style='font-size: smaller;'>2(g)</sub> 2SO<sub style='font-size: smaller;'>3(g)</sub><br/><br/>If the temperature of the reaction is reduced from to an no other change takes place, then

If excess zinc is added to a bluish green solution of copper (II) sulphate, and the excess zinc filtered off after completion of reaction, a colourless solution is obtained because

Two gas cylinders contain ethylene (ethene) and acetylene respectively. One test which can be used to distinguish between them is by

Consider the following equation H<sub style='font-size: smaller;'>2</sub>O + 2Fe<sup style='font-size: smaller;'>2+</sup> + Cl<sub style='font-size: smaller;'>2</sub> 2Fe<sup style='font-size: smaller;'>3+</sup> + 2Cl<sup style='font-size: smaller;'>-</sup> + H<sub style='font-size: smaller;'>2</sub>O. The only ion which behaves as an oxidising agent is