The rate of reaction between marble and hydrochloric acid can be speeded up by using:

Which of the following nutrients is/are digested in the stomach?

The number of particles in a mole of any gas is always:

Given ƒ : x -> 3x - 1, and g : x -> x², then ƒg(-2) =

When a trial balance does NOT agree, the difference is placed in a

In the equation, carbon monoxide + oxygen → carbon dioxide, a reactant is:

The length of an insect such as a grasshopper increases in steps.This is because:

Which of the following may result if many people do what the young man in the picture is doing?

1. The rapid growth of cities
2. The growth of shanty towns and squatter settlements
3. The brain drain experienced by many developing countries
4. Inadequate housing, educational and health facilities in urban areas

The marked price of a stove was $520. A worker bought the stove on hire-purchase by making a down payment of $100, and twelve monthly payments of $40 each.
How much could she have saved if she had bought the stove for the marked price?

We can separate an insoluble solid from a liquid using:

The main site of action of ADH (antidiuretic hormone).

Which of the following acronyms represents a computer bus primarily designed for the transfer of data between a computer system and a mass storage device?

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

Which one of the following taxonomic groups contains the greatest number of organisms?

The table shows the distribution of the ages of 25 students.

What is the probability that a student chosen at random is AT LEAST 13 years old?

Identify the order in which the ancestors of the Caribbean people arrived in the region.

1. Amerindians
2. East Indians
3. Europeans
4. Africans

A flame test colour of red could indicate the presence of a compound of:

The major plant nutrients written as NPK refer to phosphorus, nitrogen and:

Hormonal methods of contraception work by:

The standard atom used for mass calculations is: