If a flask containing marble and acid is placed on a balance, the mass decreases steadily with time, which means that:

Photosynthesis is important because:

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 __________.

Enzymes are called biological catalysts because they:

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

While the committee members ............ insults across the floor, the chairman tried in vain to ............ order.

When a person who has diabetes injects himself with insulin it:

Osmosis is:

All of the following are non-metals EXCEPT for:

When a metal wire carries an electric current, charges flow through it.The moving charges are:

After a 5% discount, an article is sold for $475. The price before the discount was

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

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?

Which of the following would undermine the authority of parents in the home?

The following statements describe a magnetic field plot, showing the lines of force.Which one is true?

The type of polymerisation used to make polythene is called:

A rectangular tank is 50 cm long, 50 cm wide and 10 cm deep. The volume of liquid it will hold is

Any solution with a pH below 7 must be:

Personal accounts are found in the

A(n) __________ printer is suitable for printing multi-part forms because they easily print through many layers of paper.

For which of the following purposes is the information collected in a census normally used?

1. To determine the rate of population growth
2. To predict the needs of the society and plan how to satisfy them
3. To estimate the number of government supporters in the country