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crystallisation

Chemical Changes

Last Updated on March 20, 2019 By Mrs Shilpi Nagpal 2 Comments

Question 1 What is meant by rusting of iron? State two conditions necessary for rusting of iron? How rusting damages iron objects? Question 2 What happens when an iron nail is kept immersed in copper sulphate solution?Question 3 What happens when baking soda is added to vinegar? Give its chemical reaction?Question 4 What happens when carbon dioxide is passed through lime … [Read more...] about Chemical Changes

Separation of Mixture

Last Updated on September 28, 2019 By Mrs Shilpi Nagpal 8 Comments

Question 1 What do you mean by separation of mixtures? Question 2 How will you separate a mixture containing sand and sugar? Question 3 Describe a method to separate a mixture of sand and salt? Question 4 How will you separate a mixture of salt and sugar? Question 5 Name a solvent used to separate a mixture of sulphur and carbon? Question 6 How will you separate … [Read more...] about Separation of Mixture

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