The nucleus of a carbon atom has six protons and eight neutrons.Which one of the following describes it?
2. Question | Mathematics
Given ƒ : x -> 3x - 1, and g : x -> x2, then ƒg(-2) =
3. Question | Integrated Science
Each of the features of our bodies is controlled by a:
4. Question | Integrated Science
When carbon dioxide gas passes through limewater, the limewater:
5. Question | Biology
Most plant and animal cells contain:
6. Question | Biology
The following diagram shows a model used to show how breathing movements take place:
Which part of the model represents the diaphragm?
7. Question | Chemistry
The halogen used to make bleach is called:
8. Question | Mathematics
The number 32747 written to 4 significant
figures is
9. Question | Mathematics
How many grams are in 2.5 kilograms?
10. Question | Mathematics
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
11. Question | Biology
Enzymes catalyse specific reactions by having an active site where the substrate fits.This theory
is called:
12. Question | Physics
A detector close to a sample of radioactive material records 76 counts per second (cps).
Precisely 2 days later the count rate has fallen to 22 cps.The count rate due to background
radiation, taken immediately before and after the experiment, averaged 4 cps. The half-life of the
material is:
13. Question | Mathematics
The range of values of v when
5 - v ≤ 2v - 1 is
14. Question | Physics
A certain nucleus has 12 protons and 16 neutrons.Which one of the following statements about
the nucleus is NOT true?
15. Question | Mathematics
The bases and heights of a cylinder and a cone are the same. The volume of the cylinder is V cm3. What is the volume of the cone in cm3 ?
16. Question | Chemistry
When gas particles spread out we call it:
17. Question | Chemistry
Oxidation can include all of these EXCEPT for:
18. Question | Social Studies
Which of the following BEST characterizes a primary group?
19. Question | Mathematics
If U = {1, 2, 3, . . . 10 } and
S = { 4, 5, 6, 7, 8 }, then S ' =