Chemistry Past Questions and Answers

Which of these metals, Mg, Fe, Pb and Cu will dissolve in dilute HCI?

Stainless steel is an alloy of

Which volume of 0.5 M H <sub style='font-size: smaller;'>2</sub>SO<sub style='font-size: smaller;'>4</sub> will exactly neutralize 20 cm <sup style='font-size: smaller;'>3</sup> of 0.1 M NaOH solution?

Which of the following pair of gases will NOT react further with oxygen at a temperature between 30<sup style='font-size: smaller;'>o</sup>C AND 400<sup style='font-size: smaller;'>o</sup>C

Some metals are extracted from their ores after some preliminary treatments by electrolysis (L), some of both processes (TL). Which set-up in the following for the extraction of ion, copper and aluminium is correct?