Vegetables like cauliflower, cabbage and broccoli have been bred from the original wild brassica plant by:

When something gets hotter, the particles in it gain more:

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

Which of the following properties of water is not important to the survival of living things?

Nitrogen fixation produces:

1 mole of sodium carbonate weighs 106 g, so the number of moles in 318 g will be:

The correct pathway of water through a plant is:

The interest rate on investments in a bank decreased from 8 ¹/₂ per cent per annum to 6 per cent per annum. The difference in annual interest on a deposit of $2 000 is

To complete the reaction: acid + carbonate → salt + carbon dioxide + ?, we must add the word:

The active catalyst in a car′s catalytic converter is:

A trader received an invoice for $4,000 less 25% trade discount. Subsequently he returned one eighth of the goods. What amount would be entered in his Returns Outwards Account?

A circular hole with diameter 4 cm is cut out of a circular piece of card with a diameter of 16 cm. The area of the remaining card, in cm² , is

A salt that contains water of crystallisation is:

Eight bits are called a __________.

AIDS is a killer disease because:

The alloy, brass, contains copper and:

In the figure above, the shaded portion represents

The statements refer to a fuse. Which one is true?

In an atom the neutron is found:

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?