Adding mineral water to anhydrous copper sulphate turns it:

Which of the following is a subset of {b, c, d}?

Veins have valves because

The specific heat capacity of a particular liquid is 3000 J kg^-1 K^-1. A large beaker containing 2 kg of the liquid has to be warmed from 25 ℃ to 35 ℃. A 100 W heater is used. If all the thermal energy could be transferred to the liquid, how long would it take?

Any solution with a pH below 7 must be:

Which of the following groups indicates examples of current assets?

All of the following are possible consequences of global warming EXCEPT for:

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

Profits in the partnership of Bess, Bill and Bob are shared in the ratio 1 : 2 : 3. If Bill's share of the profits is $300, what is Bob's share?

In many Caribbean countries the Queen of England is the head of state.

Such countries may be described as

Some foods contain flavour enhancers. These food additives:

The following are all natural materials EXCEPT for:

Which of the following are real accounts?

1. Furniture Account
2. Debtors Account
3. Capital Account
4. Motor Car Account

The wall of the left ventricle is thicker than that of the right ventricle because:

Photosynthesis is important because:

In the circle above, the circumference is 20 cm. The length of the arc AB, in centimetres, is

The equation of the line which passes through the point (0 , -3) and has a gradient of ¹/₂ is

The rate of reaction between marble and hydrochloric acid can be speeded up by using:

The white blood cells that produce antibodies are called:

Demersals are fish that are found: