Chemistry Past Questions and Answers

Substance Q reacts with cold water to form a solution which turns red litmus blue. Substance Q could be

What term is used to describe an oxide whose aqueous solution turns blue litmus red?

The pH of 0.50 mol dm<sup style='font-size: smaller;'>-3</sup> solutions of HCI, H<sub style='font-size: smaller;'>2</sub>SO<sub style='font-size: smaller;'>4</sub> and CH<sub style='font-size: smaller;'>3</sub>COOH were measured. which of the following statements about the values obtained is correct?

Which of the following processes involves neutralization?

Sea shells contain mainly CaCO <sub style='font-size: smaller;'>3</sub>. Calcium oxide can be prepared from sea shells by