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Corrosion of Metals

Chemistry ⇒ Metals and Non-metals

Corrosion of Metals starts at 8 and continues till grade 12. QuestionsToday has an evolving set of questions to continuously challenge students so that their knowledge grows in Corrosion of Metals. How you perform is determined by your score and the time you take. When you play a quiz, your answers are evaluated in concept instead of actual words and definitions used.
See sample questions for grade 9
A steel bridge is painted regularly. Explain why this is necessary.
A water tank made of iron is leaking after several years of use. Suggest a reason for this.
Describe how moisture contributes to the corrosion of metals.
Describe one way in which corrosion can be prevented in ships.
Describe the role of oxygen in the corrosion of iron.
Explain the term 'sacrificial protection' in the context of corrosion.
A steel bridge is painted regularly. Explain why this is necessary.
A water tank made of iron is leaking after several years of use. Suggest a reason for this.
Which chemical formula represents rust? (1) FeO (2) Fe2O3·xH2O (3) Fe3O4 (4) FeCl3
Which of the following environments will speed up the corrosion of iron? (1) Dry air (2) Pure water (3) Moist air (4) Oil
Which of the following is a chemical reaction involved in the rusting of iron? (1) Fe + O2 + H2O → Fe2O3·xH2O (2) Fe + HCl → FeCl2 + H2 (3) Fe + S → FeS (4) Fe + CuSO4 → FeSO4 + Cu
Which of the following is a correct statement about corrosion? (1) It only affects non-metals (2) It is a physical change (3) It can be prevented by coating metals (4) It makes metals stronger
Fill in the blank: The chemical reaction that causes corrosion is usually a type of ________ reaction.
Fill in the blank: The green coating that forms on copper objects due to corrosion is called ________.
Fill in the blank: The process of coating iron with a layer of zinc to prevent corrosion is called ________.
Fill in the blank: The process of corrosion involves the ________ of metals.
True or False: All metals corrode at the same rate.
True or False: Corrosion can be completely stopped by using only one method of protection.
True or False: Corrosion can weaken metal structures and cause them to fail.
True or False: Corrosion is a reversible process.