If x = 2 and y = -1, then 3x - 5y / xy²

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

When an element combines with oxygen we get an:

When zinc metal is added to copper sulphate solution the products are copper and zinc sulphate solution, so the material that has been displaced must be:

Which of the following relations is represented by the graph shown above?

The sharp-tasting compound in vinegar is:

In electrolysing a solution of copper sulphate using copper electrodes, the anode:

To electrolyse solid lead bromide it must first be heated so that:

Automated directory assistance services utilize __________ technology for accepting user input.

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?

All of the following are systems programs EXCEPT __________

The constitutions of Commonwealth Caribbean countries guarantee citizens freedom of conscience, expression, assembly and movement. These freedoms are usually referred to as

When we are too hot, more blood flows through the capillaries near the surface of the skin. This helps us to cool down because the blood loses heat by:

A liquid compound that conducts electricity is:

75 g of freshly dug soil was placed in an oven at 105 ℃ for 24 hours. It was allowed to cool, then reweighed. If the final mass of the dry soil was 66 g, what was the % water content of the original soil sample?

What is the value of u in the sequence 2 , 7 , 14 , 23 , 34 , u ?

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

Which of the following sets has a finite number of members?

Healthy individuals are beneficial to a country′s development because such individuals are likely to be