When aluminium is extracted by electrolysis, cryolite is added to:
2. Question | Chemistry
The second most common gas in the atmosphere is:
3. Question | Mathematics
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
4. Question | Integrated Science
Three factors that increase the risk of coronary heart disease are:
5. Question | Mathematics
This question refers to the triangle PQR in
which angle QPR = 90°, PR = 12 cm and
PQ = 5 cm.
The length of QR, in cm, is
6. Question | English A
Choose the ONE underlined part A, B or C that is inappropriate. If the sentence is acceptable as it stands, choose D.
We could reach the survivors neither by boat or by plane, and so we abandoned our search as futile.
7. Question | Mathematics
The expression (3x - 2)(x + 1) =
8. Question | Mathematics
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?
9. Question | Mathematics
$x is divided among three boys, Romon,
Deven and Adam, in the ratio 2 : 3 : 7,
respectively.
If Adam gets $28, what is the value of x ?
10. Question | Information Technology
Eight bits are called a __________.
11. Question | Biology
In hot conditions the surface blood vessels in the skin undergo vasodilation. This allows:
12. Question | Mathematics
The shaded area in the Venn diagram above
represents
13. Question | Biology
All of the following are components of an ecosystem EXCEPT for:
14. Question | Biology
Water is lost from the body in:
15. Question | Mathematics
A contractor completed five-ninths of a job before a second contractor completed an additional one-third. What fraction of the job is left undone?
16. Question | Mathematics
If x is an odd number, which of the following
is also odd?
17. Question | Chemistry
The number of double bonds in a molecule of carbon dioxide is:
18. Question | Principles Of Accounts
In a partnership maintaining fixed capital accounts, the net profit is appropriated to the