Question 19M.1.sl.TZ2.29
| Date | May 2019 | Marks available | [Maximum mark: 1] | Reference code | 19M.1.sl.TZ2.29 |
| Level | sl | Paper | 1 | Time zone | TZ2 |
| Command term | Question number | 29 | Adapted from | N/A |
Data collected from a larger number of silicon samples could also be plotted to determine the density using the following axes.
Which statements are correct?
I. The density is the slope of the graph.
II. The data will show that mass is proportional to volume.
III. The best-fit line should pass through the origin.
A. I and II only
B. I and III only
C. II and III only
D. I, II and III
[1]
D
This question was answered in two different ways. 33 % of the candidates chose the correct answer (D) considering what would be true about a mass-volume graph for silicon samples. However, 39 % chose distractor (B) as they considered the silicon samples in the previous question which did not show a directly proportional relationship. Both answers were accepted as we agree that the wording was ambiguous (it will be amended before publication).