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Subjects
Science CBSE
Class 9
Improvement in food resources
Textbook based HOTS
33.
Multiple choice questions XXXIII
Exercise condition:
2
m.
1
.
DDT, BHC belong to class of compounds known as
Fungicide
Fumigants
Insecticide
Weedicide
2
.
The biotic factor which damages the food material is
Temperature
Living organism
Air
Metal of the container
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