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Questions and Answers
Why is magnesium ribbon rubbed before burning?
Why is magnesium ribbon rubbed before burning?
- It has a coating of basic magnesium sulphide
- It has a coating of basic magnesium carbonate
- It has a coating of basic magnesium oxide (correct)
- It has a coating of basic magnesium chloride
Which of the following statements about the given reaction 3Fe (s) + 4H2O (g) → Fe3O4 (s) + 4 H2 (g) are correct?
Which of the following statements about the given reaction 3Fe (s) + 4H2O (g) → Fe3O4 (s) + 4 H2 (g) are correct?
- (i), (ii) and (iii)
- (i), (ii) and (iv)
- (ii) and (iv) (correct)
- (i) and (iv)
Which of the following are exothermic processes?
Which of the following are exothermic processes?
- Reaction of water with quick lime (correct)
- Evaporation of water
- Sublimation of camphor (crystals)
- Dilution of an acid
What is oxidation?
What is oxidation?
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What is reduction?
What is reduction?
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Study Notes
Why is magnesium ribbon rubbed before burning? Which of the following statements about the given reaction 3Fe (s) + 4H2O (g) → Fe3O4 (s) + 4 H2 (g) are correct? Which of the following are exothermic processes? What is oxidation? What is reduction?
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