DP Chemistry (last assessment 2024)
Question 19N.3.sl.TZ0.b
| Date | November 2019 | Marks available | [Maximum mark: 1] | Reference code | 19N.3.sl.TZ0.b |
| Level | sl | Paper | 3 | Time zone | TZ0 |
| Command term | Suggest | Question number | b | Adapted from | N/A |
b.
[Maximum mark: 1]
19N.3.sl.TZ0.b
Disposal of chemical waste is a growing problem in industry.
Suggest a concern about the disposal of solvents from drug manufacturing.
[1]
Markscheme
Any one of:
«most are» toxic «to living organisms»
OR
incomplete combustion/incineration can produce toxic products/dioxins/phosgene
OR
carcinogenic/can cause cancer ✔
accumulate in groundwater
OR
have limited biodegradability ✔
cost of disposal ✔
NOTE: Do not accept “harmful to the environment”.
Do not accept just “pollutes water”.
Do not accept “hazard of disposal”.
Accept “ozone depletion” only if there is some reference to chlorinated solvents.
