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

Crossing two brown mice produced an offspring with a black coat.Which of the following statements MUST be correct?
Ⅰ Brown coat is dominant to black.
Ⅱ The brown mice were heterozygous for coat colour.
Ⅲ The black mouse was homozygous for coat colour.
Ⅳ Crossing a black mouse with another black mouse could produce a brown offspring.

A ripple travels over the surface of some water. Its wavelength is 2 m, its amplitude is 0.1 m and its frequency is 0.5 Hz.The speed of the ripple is:

The alloy, brass, contains copper and:

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

The introduction of machines in agriculture results in the unemployment or farm workers.

The type of unemployment these workers suffer is

The number 0.0417 in standard form is

When limestone is heated strongly it changes into:

A home computer system is equipped with a memory card reader, floppy disk drive, a DVD drive and an internal hard disk, The LEAST an MOST portable media that can be used with this computer are __________.

Given that a and b are integers, which of the following is not necessarily an integer?

Choose the ONE underlined part A, B or C that is inappropriate. If the sentence is acceptable as it stands, choose D.

Had they not been forewarned, they might have joined the queue, not knowing that gas was not on sale at that station.

Hormonal methods of contraception work by:

After a 10% discount, an article is sold for $360. The price before the discount was

Demersals are fish that are found:

The active catalyst in a car′s catalytic converter is:

In metals, the particles forming the structure are all:

All of these reactions are exothermic EXCEPT for:

The alkane compound with seven carbon atoms is:

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?

Dividing 9 × 10^-2 by 3 × 10^-8 gives: