(a) Classify the following chemical substances based on their uses under the headings as shown in
the table below:
Milk of magnesia, alcohol, paracetamol, sodium hydroxide, N.P.K.
INSERT i2013b6a

(b) State one use each of the following instruments used in the study of the weather:
(i) rain gauge;
(ii) hygrometer;
(iii) anemometer.

(c) (i) Name two types of transistors.
(ii) Draw and label the circuit symbols of the transistors named in (i)

(d) State three reasons why vegetable farming is important.