When metals react with acids they give a salt and:

How many subsets does the set {a, b, c, d, e} have?

$x is divided among three boys, Ryan, Keith and Andrew, in the ratio 2 : 3 : 7, respectively. If Andrew gets $15 more than Keith, what is the value of x ?

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

The halogen used to make bleach is called:

The interest rate on investments in a bank increased from 5 per cent per annum to 6 ¹/₂ per cent per annum. The difference in annual interest on a deposit of $4000 is

In the Venn diagram above, the shaded portion represents

Which of the following does NOT contribute to unemployment?

Democratic control and open members are features of a

Boiling and evaporation both involve a liquid turning into a vapour (i.e. a gas).The following statements relate to water.Which one is NOT true?

All of these reactions are exothermic EXCEPT for:

Which of the following would DISCOURAGE emigration?

Which of the following transactions should be debited in the Cash Account?

Why is testing a leaf for starch a reliable indication that photosynthesis has taken place?

Which of the following methods of fishing is MOST damaging to the eco-system?

A boy throws a cricket ball straight up in the air. At the very top of its flight:

Alcohol can be made by fermentation of all these EXCEPT for:

In metals, the particles forming the structure are all:

The ZAP Company hired you as a book-keeper. On April 3 you received an invoice along with goods from D. Kamin & Co. Ltd. for $600. Where should you record this transaction?

Which one of the following is NOT a function of the placenta?