The number of carbon atoms in the alcohol, pentanol, is:
2. Question | Biology
The animals shown in the diagram were
identified using a dichotomous key based
on the visible characteristics listed
below:
Ⅰ body shape
Ⅱ number of legs
Ⅲ number of wings
Ⅳ number of eyes
Ⅴ number of antennae
Which characteristics could be used to
divide the animals into two groups?
3. Question | Integrated Science
When we are too hot, more blood flows through the capillaries near the surface of the skin. This helps us to cool down because the blood loses heat by:
4. Question | Mathematics
A square has the same area as a rectangle with
sides of length 9 centimetres and 16 centimetres.
What is the length of the square?
5. Question | Chemistry
With iodine, starch changes colour to:
6. Question | Chemistry
A salt that is anhydrous contains no:
7. 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.
8. Question | English A
Instruction: Choose from the four options the word or pair of words which BEST completes the meaning of the sentence.
While the committee members ............ insults across the floor, the chairman tried in vain to ............ order.
9. Question | Chemistry
Which one of the following gases is considerably heavier than air?
10. Question | Chemistry
When aluminium is extracted by electrolysis, cryolite is added to:
11. Question | Biology
In a food chain a plant is a producer because it produces:
12. Question | Chemistry
In metals, the particles forming the structure are all:
13. 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
14. 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.
Had they not been forewarned, they might have joined the queue, not knowing that gas was not on sale at that station.
15. Question | Chemistry
The standard atom used for mass calculations is:
16. Question | Physics
Which one of the following statements about constructive interference is NOT true?
17. Question | Mathematics
The area of the trapezium ABCD above is
18. Question | Chemistry
A flame test colour of red could indicate the presence of a compound of:
19. Question | Information Technology
__________ enables users to convert the image from a fax modem to text and then edit it.