In a school of 910 pupils, 3/7 are boys and 2/5 of the boys wear glasses. How many
boys wear glasses?
2. Question | Biology
An enzyme which has an optimum pH of 3 will function best in the:
3. Question | Chemistry
Alcohol can be separated from beer using:
4. Question | Integrated Science
The point where two neurones connect is called:
5. Question | Mathematics
In coordinate geometry, the equation of the x-axis is
6. Question | English A
Instructions: Choose from the four suggested answers the word which is closest to OPPOSITE in meaning to the underlined word.
As a result of the need for trained staff, the firm had to dismiss several workers.
7. Question | Integrated Science
Which statement is not true of sperm and ova?
8. Question | Biology
Crossing two brown mice produced an offspring with a black coat.Which of the following statements MUST be correct?
Ⅰ Brown coat is dominant to black.
Ⅱ The brown mice were heterozygous for coat colour.
Ⅲ The black mouse was homozygous for coat colour.
Ⅳ Crossing a black mouse with another black mouse could produce a brown offspring.
9. Question | Chemistry
The units we use for heat given out by a reaction are:
10. Question | Chemistry
The second most common gas in the atmosphere is:
11. Question | Physics
Two separate forces are acting on a bar to cause it to rotate clockwise. One force is 20 N, at a
distance of 3 m out from the pivot; the second force, 2 m further out, is 10 N. Their combined
moment is:
12. Question | Mathematics
The water authority charges $20.00 per
month for the meter rent, $2.00 for the first
1 000 litres and $0.20 for each additional
100 litres. What is the total bill for 2400
litres used in one month?
13. Question | Biology
A relationship between two organisms where one organism derives benefits from the
relationship and the other organism derives no benefit, but is not harmed, is called:
14. Question | Integrated Science
When we sweat, we lose heat because:
15. Question | Biology
Which one of the following is NOT a function of the placenta?
16. Question | Physics
A dynamo connected to a circuit is being turned.Which one of the following would NOT
generate a greater e.m.f.?
17. Question | Chemistry
All of these are ordered crystalline structures EXCEPT for:
18. Question | Physics
The lowest and the highest frequencies a typical young person′s ear can detect are
approximately:
19. Question | Chemistry
All of the following are non-metals EXCEPT for:
20. Question | Social Studies
The highest authority of the Caribbean Community (CARICOM) is the