Chemistry Past Questions and Answers

What is the oxidation number of chromium in K<sub style='font-size: smaller;'>2</sub>CrO<sub style='font-size: smaller;'>4</sub>?

What product is formed at the cathode during the electrolysis of concentrated sodium chloride solution using carbon electrodes?

Which of the following substances is suitable solvent for perfumes?

The complete hydrogenation of C <sub style='font-size: smaller;'>6</sub><br/>H <sub style='font-size: smaller;'>6</sub> in the presence of nicked catalyst at 200<sup style='font-size: smaller;'>o</sup>C gives

Which of the following pairs of substances can be distinguished by use of NaHCO<sub style='font-size: smaller;'>3</sub> solution?