The triangle ABC above shows the angle of elevation of the top, B, of a tower, BC, from A, to be 30°. AB = 40 m. The length of BC is

All of the following are features of a gas exchange surface EXCEPT for:

Which one of the following is NOT a magnetic material?

Which of the following are all deficiency diseases?

The pie chart above shows how a student used 10 hours per week for studying English (E), Mathematics (M), French (F) and Geography (G), The amount of hours spent studying French is approximately

Which of the following are the functions of a book-keeper?

1. Analysing
2. Interpreting
3. Posting
4. Recording

All of the following are systems programs EXCEPT __________

Which of the following does NOT contribute to unemployment?

All of the following are components of an ecosystem EXCEPT for:

If x = 2³ × 5² =, then x⁴ =

In the circle above, the circumference is 10 cm. The length of the arc AB, in centimetres, is

Instruction: Choose from the four options the word or pair of words which BEST completes the meaning of the sentence.

While the committee members ............ insults across the floor, the chairman tried in vain to ............ order.

In a food chain a plant is a producer because it produces:

In an ecosystem a population is:

Potassium reacts quickly with water but we do not use it with acids because:

Which of the following are examples of environmental variation in humans?
Ⅰ hair colour
Ⅱ height
Ⅲ intelligence
Ⅳ body mass

The nucleus of a carbon atom has six protons and eight neutrons.Which one of the following describes it?

A typical soil contains mineral particles, humus, water, air and:

The following figures are taken from a manufacturing account.


The cost of tie year's production of finished goods is

Which of the following are natural barriers to infection?
Ⅰ tears
Ⅱ skin
Ⅲ stomach acid
Ⅳ mucus