DP Chemistry (last assessment 2024)
Question 17N.3.hl.TZ0.6b
| Date | November 2017 | Marks available | [Maximum mark: 2] | Reference code | 17N.3.hl.TZ0.6b |
| Level | hl | Paper | 3 | Time zone | TZ0 |
| Command term | Explain | Question number | b | Adapted from | N/A |
b.
[Maximum mark: 2]
17N.3.hl.TZ0.6b
The development of materials with unique properties is critical to advances in industry.
(b)
Explain why Type 2 superconductors are generally more useful than Type 1.
[2]
Markscheme
Any two of:
have higher critical temperatures/Tc «than Type 1»
OR
can act at higher temperatures
have higher critical magnetic fields/Bc «than Type 1»
less time needed to cool to operating temperature
less energy required to cool down/maintain low temperature
Do not accept “Type 2 has a gradual transition to a superconducting state but in Type 1 it is a sharp transition”.
[Max 2 Marks]
