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

Which one of the following gases is considerably heavier than air?

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

In the modern Periodic Table the elements are arranged:

All of these materials are used in a blast furnace EXCEPT for:

“ individual countries in the region are too small to make their presence felt on the world stage.”

Implied in this statement is the need for

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

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

When large molecules are broken down into smaller ones it is called:

Which one of the following chemicals is used to test for starch?

The monomer used to make poly (propene) is called:

__________ is a temporary holding area for data, application program instructions, and the operating system.

When dilute sulphuric acid is electrolysed the two gases produced are hydrogen and:

The decimal equivalent of ⁷/₈ is

For Mg++ to turn into an atom of magnesium metal it must:

The term __________ designates equipment that might be added to a computer system to enhance its functionality.

The system used by mission control in Houston, Texas to monitor the operation of space exploration vehicles is an example of the __________ processing mode.

When gas particles spread out we call it:

The blood cells that engulf invading microorganisms are:

The standard atom used for mass calculations is: