Chemistry Past Questions and Answers

What is the change in the oxidation number of 1<sup style='font-size: smaller;'>-</sup> in the reaction represented by the following equation? 51 <sup style='font-size: smaller;'>-1</sup><sub style='font-size: smaller;'>(aq)</sub> + 6H<sup style='font-size: smaller;'>+</sup><sub style='font-size: smaller;'>(aq)</sub> + 1O<sup style='font-size: smaller;'>-</sup><sub style='font-size: smaller;'>3(aq)</sub> → 31<sub style='font-size: smaller;'>2(g)</sub> + 3H<sub style='font-size: smaller;'>2</sub>O<sub style='font-size: smaller;'>(l)</sub>

The key factor to be considered in siting a chemical industry is

Which of the following reactions will be affected by change in pressure at equilibrium?

WHICH OF THE FOLLOWING PETROLEUM FRACTIONS YIELDS VASELINE AND PARAFFIN WAX ON REDISTILLATION?

What is the product Cx Hy in the following equation? C<sub style='font-size: smaller;'>10</sub>H<sub style='font-size: smaller;'>12</sub> → C<sub style='font-size: smaller;'>8</sub>H<sub style='font-size: smaller;'>18</sub> + CxHy