Chemistry Past Questions and Answers

During the electrolysis of dilute tetraoxosulphate (VI) acid solution 0.05 mole of electrons were passed what volume of gas was produced at the anode? (Gaseous molar volume = 22. 4dm³ at s.t.p)

(a) Name two allotropes of carbon
(b) Name two products of the destructive distillation of coal and state one use of each.

(a) Give one example of;
(i) heavy chemicals
(ii) fine chemicals
(b) Write the structural formulae and the names of compounds having the formula CH\(_4\)CI,

(a) Arrange the following in their correct order of increasing energy: alpha particles, gamma rays and beta particles
(b) State one difference between nuclear fission and nuclear fusion

50cm\(^{3}\) of sulphur (IV) oxide were produced at s.t.p. when some quantity of powdered sulphur were burnt in excess oxygen
(a) Write the equation for the reaction
(b) Calculate the volume of oxygen used up during the reaction
(c) Which of the gas laws is applicable? State the law.