Question

3. What happens chemically when quicklime is added to water filled in a bucket?
4. Why should magnesium ribbon be cleaned before burning in air?​

Answer 1

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1. When quicklime is added to water, it forms slaked lime along with the evolution of heat. There will be a rise in the temperature of the bucket. Calcium oxide reacts with water to form calcium hydroxide, also called slaked lime.
2. Magnesium is a very reactive metal. When it is kept in the open air it can react with the gases present in the air. Cleaning will remove those impurities formed due to the reaction with air.

Answer 2

Answer:

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