The optimum temperature for enzyme action is:

THE ITEM refers to the following illustration.

The pattern where many persons make the same decision as the young man in the picture is refered to as

When two solutions are mixed and give a solid product we call it:

A lack of vitamin D in the diet causes:

The energy used in thermal decomposition is:

The exterior angles and the interior angles of a polygon are equal. How many sides does the polygon have?

Tooth decay can be caused by:

Which one of these statements is true for ALL electromagnetic waves?

Which of the following is LEAST likely to lead to the development of the Human Resources of a country?

__________ is a type of chip from which data can be erased by exposure to ultraviolet light.

In metals, the particles forming the structure are all:

2(5 - x) - 3(x - 6) =

Which of the relations represented below are functions?

The mean of ten numbers is 58. If one of the numbers is 40, what is the mean of the other nine?

THE ITEM is based on the following extract.

Unemployment and hard economic conditions have forced both parents in some Caribbean families to migrate, leaving an elder son or daughter to care for the younger brothers and sisters.

Which of the following problem is LEAST likely to affect the younger brothers and sisters?

Which of the following tests describes the test for glucose?

When metals react with acids they give a salt and:

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

How many lines of symmetry does this shape have?

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?