Reactive metals such as potassium react with water to give hydrogen and:

The chemicals that make up the bodies of animals and plants are called:

The decimal equivalent of ⁷/₈ is

Which one of the following foods contains the most energy per 100 g?

Plants make growth movements in response to all of the following stimuli EXCEPT for:

Ammonia gas spreads out faster than hydrogen chloride, showing that it is:

“ individual countries in the region are too small to make their presence felt on the world stage.”

Implied in this statement is the need for

The triangle ABC above shows the angle of elevation of the top, B, of a tower, BC, from A, to be 30°. AB = 40 m. The length of BC is

All of the following are systems programs EXCEPT __________

What unit measurement is used to express the speed of memory?

A spring is 100 mm long when unstretched. A 40 N load is hung from it, and its total length increases to 120 mm. A different load on the spring causes it to become 150 mm long. If the spring obeys Hooke′s Law, this second load is:

Which of the following statements about photosynthesis is NOT true?

The water authority charges $10.00 per month for the meter rent, $2.50 for the first 1 000 litres and $0.10 for each additional 100 litres. What is the total bill for 2 500 litres used in one month?

All of these materials are used in a blast furnace EXCEPT for:

The following figures are taken from a manufacturing account.


The cost of tie year's production of finished goods is

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

Water passes out of leaves through the:

One example of an emulsifying agent is:

Which of one the following statements about phloem cells is NOT true?

Which of the following statements about aerobic respiration is correct?