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

If an increase of 20% will change the price of an item to $480, what is the original price of the item?

The common name for silicon dioxide is:

Choose the ONE underlined part A, B or C that is inappropriate. If the sentence is acceptable as it stands, choose D.

Had they not been forewarned, they might have joined the queue, not knowing that gas was not on sale at that station.

In a food chain a plant is a producer because it produces:

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?

Some plants reproduce by forming bulbs. The new plants that grow from the bulbs will be genetically identical
because:

If x = 2³ × 5² =, then x⁴ =

The blood cells that engulf invading microorganisms are:

A certain nucleus has 12 protons and 16 neutrons.Which one of the following statements about the nucleus is NOT true?

Three factors that increase the risk of coronary heart disease are:

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

Dividing the mass in grams by the mass of 1 mole in grams gives:

Removal of forests may cause all of the following EXCEPT

Large-scale applications sometimes refer to a graphic tablet as a __________.

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

Enzymes catalyse specific reactions by having an active site where the substrate fits.This theory is called:

-7 - (-3) =

Which of the following would DISCOURAGE emigration?

Seeds are dispersed from the parent plant: