When an acid neutralises an alkali the pH is likely to be:

In the figure above, AB || CD and ∠BAD = 32° . ∠APC =

Which conclusion can be drawn from the table?

In an ecosystem a population is:

A ballpoint pen mark can be removed using:

Hydrocarbons contain carbon and:

All of the following processes result in energy loss from an ecosystem EXCEPT for:

Measuring plant growth by measuring height is convenient, but inaccurate because:

We lose water mainly in:

The water authority charges $20.00 per month for the meter rent, $2.00 for the first 1 000 litres and $0.20 for each additional 100 litres. What is the total bill for 2400 litres used in one month?

An electron, with its charge of 1.6 × 10^-19 C, is moved from one place at +8 V to a different place which is at 0 V.The energy released will be:

The density of pure water is:

The Haber Process is used to make:

The following are all natural materials EXCEPT for:

When zinc sulphide is heated in air the gas produced is:

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

To work out the heat change in a reaction we need to know just three things, the mass, the temperature change and the:

Vaccination causes a person′s immune system to produce:

The non-metal used to make margarine is:

The metal used in food containers whose surface is protected by a strong oxide layer is: