Chemistry Past Questions and Answers

Which of the following sources of energy contributes to green-house effect?

A consequences of global warming is

Which of the following metals is common to both brass and bronze?

The alkanol obtained from the production of soap is

(a) What are nucleons?
(b) State Graham's law of diffusion.
(c) Explain briefly why aluminium does not corrode easily.
(d) State three examples of periodic properties.
(e) State two reasons why real gases deviate from ideal gas behaviour.
(f) List three uses of fractional distillation in industry.
(g) What factors determine the selective discharge of ions at the electrodes during electrolysis?
(h) State the type of reaction represented by each of the following equations:
(i) C\(_2\)H\(_6\) + Br\(_2\) ---> C\(_2\)H\(_5\)Br + HBr;
(ii) C\(_2\)H\(_4\) + .Br\(_2\) ---> CH\(_4\)Br\(_2\)

(i) Name the products formed when butane burns in limited supply of air.
(j) List three methods of separating a solid from a liquid.