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Chemistry Chemistry Difficulty: Medium

The main source of carbon monoxide is

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Match List-I with List-II and select the correct answer: List-I (Organic Acid) List-II (Natural Source) a. Formic acid 1. In milk b. Lactic acid 2. In red ants c. Tartaric acid 3. In tamarind d. Glumatic acid 4. In wheat Urea is a Chlorination of toluene in the presence of sublight produces_________________? O, S and Se what is the correct sequence of atomic sizes of these elements? All the transition elements show_________________?