DP Chemistry (last assessment 2024)

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Question 19N.3.sl.TZ0.19b

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Date November 2019 Marks available [Maximum mark: 1] Reference code 19N.3.sl.TZ0.19b
Level sl Paper 3 Time zone TZ0
Command term Suggest Question number b Adapted from N/A
b.
[Maximum mark: 1]
19N.3.sl.TZ0.19b

Disposal of chemical waste is a growing problem in industry.

(b)

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.

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