WAEC Chemistry Past Questions & Answers - Page 278

The metal extracted from cassiterite is

Petrol can be obtained from diesel by

The following metals are extracted by the electrolytic method except

Which of the following compounds crystallizes without water of crystallization?

The decomposition of hydrogen peroxide is represented by the equation: 2H₂O_(l) + O_2(g) what mass of hydrogen peroxide would be required to produce 22.4dm₃ of oxygen at s.t.p? (H = 1, O = 16, molar volume of a gas at s.t.p. = 22.4dm₃)