Which one of the following is a biological component of a pond ecosystem?

The halogens are found in:

The chemicals that make up the bodies of animals and plants are called:

The units of specific latent heat are:

The interest rate on investments in a bank decreased from 8 ¹/₂ per cent per annum to 6 per cent per annum. The difference in annual interest on a deposit of $2 000 is

Which one of the following statements about constructive interference is NOT true?

The common name for silicon dioxide is:

Which of the following are advantages of asexual reproduction in a flowering plant?
Ⅰ Large numbers of offspring are rapidly produced.
Ⅱ Favourable genotypes are maintained from one generation to the next.
Ⅲ The plant does not need to rely on wind or insects for pollination.
Ⅳ Several identical individuals grow close together.

We lose water mainly in:

All of the following are organelles EXCEPT for:

In the figure above, the shaded portion represents

Any solution with a pH below 7 must be:

Removal of forests may cause all of the following EXCEPT

__________ refers to the number of bits that a microprocessor can manipulate at one time

Which of the following social issues are associated with the use of illegal drugs by adolescents?

1. Criminal activity
2. Indiscipline
3. Early marriage
4. Poverty

We do not see an object if rays of light from it are focussed on the blind spot because:

The area of the trapezium ABCD above is

Food can be preserved in all of these ways EXCEPT for:

Acid soils can be neutralised by adding:

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.