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Unit 19
🔬 Science · Unit 19
Types of pesticides
6 topics, with notes, question answers, exercises and tests.
Food Preservatives · खाद्य संरक्षक
Natural Materials Used in Cleansing · सफाइमा प्रयोग हुने प्राकृतिक वस्तुहरू
Chemicals used in cleansing · सफाइमा प्रयोग हुने रसायनहरू
Chemical pesticides · रासायनिक विषादी
Types of pesticides · विषादीका प्रकार
Chemical pollution · रासायनिक प्रदूषण
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Unit 18: Alcohol