Tooth decay can be caused by:

When rotated through 90° about the origin in a clockwise direction, the image of the point (3, 1) is

All of these are compounds EXCEPT for:

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

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

This question refers to the triangle PQR in which angle QPR = 90°, PR = 12 cm and PQ = 5 cm.

The length of QR, in cm, is

When we sweat, we lose heat because:

Powders react faster than lumps because they have:

Which one of the following is correct. When we digest our food:

On May 1, a petty cashier received Imprest of $150. During the month, petty cash expenses amounted to $77.00 and $2.00 was received from a member of staff who made a personal telephone call. How much cash is needed to restore the imprest on 31 May?

A certain nucleus has 12 protons and 16 neutrons.Which one of the following statements about the nucleus is NOT true?

All of the following have endoskeletons EXCEPT for:

In an ecosystem a population is:

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?

All of the following devices are commonly used non-impact printers EXCEPT __________.

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

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

Instruction: Choose from the four options the word or pair of words which BEST completes the meaning of the sentence.

To conceal his true activities, the spy quickly ............ a plausible excuse for his presence there.

The empirical formula, C₆H₁₂O₆, gives the simplest ratio as:

What would be the best materials to use for making the coil and the core of an electromagnet?