Adding mineral water to anhydrous copper sulphate turns it:

If the relative atomic mass (RAM) = 1 for hydrogen and 16 for oxygen, the formula mass for H₂O₂ is:

At 20 ℃ all of the halogens are:

Which of the following is NOT transported in phloem?

The range of values of v when 5 - v ≤ 2v - 1 is

All of the following can affect the size of a population EXCEPT for:

The state symbol for a solution in water is:

The speed of an ink-jet printer is measured by the number of __________ it can print.

The graph shows the results of an experiment to investigate
the relationship between the voltage placed across a light bulb
and the current which then flows through it.Which one of the
following statements is NOT true?

The number of double bonds in a molecule of carbon dioxide is:

The length of an insect such as a grasshopper increases in steps.This is because:

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

Identify the order in which the ancestors of the Caribbean people arrived in the region.

1. Amerindians
2. East Indians
3. Europeans
4. Africans

After a 10% discount, an article is sold for $360. The price before the discount was

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

A circular hole with diameter 6 cm is cut out of a circular piece of card with a diameter of 12 cm. The area of the remaining card, in cm² , is

The sharp-tasting compound in vinegar is:

The simplest ratio of atoms in a compound is given by the:

All of the following are components of an ecosystem EXCEPT for:

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 __________.