Welcome to our quizzes about chemistry

feel free to solve the quizzes below

1) Which one is involves in process of reduction?
2) Which substance is added to food containing fats and oils?
3) Which gases can be used for storage?

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Chemistry
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Commonly referred to as salt (although sea salt also contains other chemical salts), sodium chloride is an ionic compound containing sodium and chloride ions in a 1:1 ratio. Having a ...