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Subjects
Science CBSE
Class 10
Our environment
Textbook based HOTS
24.
Multiple choice questions XXIV
Exercise condition:
2
m.
1
.
Depletion of ozone is mainly due to
Chlorofluorocarbon compounds
Carbon monoxide
Pesticides
Methane
2
.
Which of the following is biodegradable?
lead
DDT
polythene
cowdung
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