Chemistry Past Questions and Answers

Which of the following compounds will form a solution if exposed to air?

The most common type of chemical reaction which alkanes undergo is

Consider the following exothermic reaction<br/>2SO<sub style='font-size: smaller;'>2(g)</sub> + O<sub style='font-size: smaller;'>2(g)</sub> ↔ 2SO<sub style='font-size: smaller;'>3(g)</sub><br/>If the temperature of the reaction is reduced from 800°C to 500°C, 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

Three solutions contain carbonate, sulphate and sulphide ions respectively. One test that will identify just ONE of them completely is by addition to each of them of