Chemistry Past Questions and Answers

Waste plastics accumulate in the soil and pollute the environment because plastic materials are

The conclusion from Rutherford's from radioactive substance alpha-scattering experiment is that

If a metal R forms a compound with the formula R(NO<sub style='font-size: smaller;'>3</sub>)<sub style='font-size: smaller;'>2</sub> the formula of its tetraoxosulphate (VI) is

Which of the following decreases when a given mass of gas is compressed to half its initial volume?

What volume of hydrogen will be produced if 100cm<sup style='font-size: smaller;'>3</sup> of ammonia is completely decomposed at constant temperature and pressure? The equation for the reaction is 2NH<sub style='font-size: smaller;'>3(g)</sub> → N<sub style='font-size: smaller;'>2(g)</sub> + 3H<sub style='font-size: smaller;'>2(g)</sub>