DP Chemistry (last assessment 2024)
Question 20N.3.sl.TZ0.b(iv)
| Date | November 2020 | Marks available | [Maximum mark: 1] | Reference code | 20N.3.sl.TZ0.b(iv) |
| Level | sl | Paper | 3 | Time zone | TZ0 |
| Command term | Suggest | Question number | b(iv) | Adapted from | N/A |
b(iv).
[Maximum mark: 1]
20N.3.sl.TZ0.b(iv)
There has been significant growth in the use of carbon nanotubes, CNT.
Suggest a gas which should be continuously passed over the molten magnesium in the electrolytic cell.
[1]
Markscheme
argon//helium/ ✔
Accept any identified noble/inert gas.
Accept name OR formula.
Do not accept “nitrogen/“.
Examiners report
This was a very popular option with approximately 34% of candidates attempting Option B. Many students appeared well prepared for this option. Some candidates continue to provide answers with a heavy Biology bias that often make them lose valuable points.
