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Aluminium is more reactive than iron. Bu...

Aluminium is more reactive than iron. But aluminium is less easily corroded than iron because.

A

aluminium is a noble metal

B

oxygen forms a protective oxide layer

C

iron undergoes reaction easily with water

D

iron forms mono and divalent ions

Text Solution

Verified by Experts

The correct Answer is:
B
Aluminium reacts with air to form a protective layer of aluminium oxide which makes it less prone to corrosion.
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Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R ). Mark the correct choice as: Assertion : Aluminium is more reactive than iron. Reason : Its corrosion is less than that of iron.

(a) Why is an iron grill painted frequently? (b). Explain why, through aluminium is more reactive than iron, yet there is less corrosion of aluminium when both are exposed to air.

MTG IIT JEE FOUNDATION-CHEMICAL REACTIONS AND EQUATIONS-EXERCISE (Multiple Choice Questions )
  1. Which of the following is a decomposition reaction ?

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  2. Which of the statement about the following reactions is correct ? Z...

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  3. In the decomposition of lead (II) nitrate to give lead (II) oxide,nitr...

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  4. Which of the following is not an example of single displacement reacti...

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  5. The reaction in which to compounds exchange their ions to form two com...

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  6. Antioxidants are

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  7. Aluminium is more reactive than iron. But aluminium is less easily cor...

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  8. The example for exothermic reaction is

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  9. What does the symbol (aq) represent in a chemical equation?

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  10. In the reaction betwee.n lead sulphide and hydrogen peroxide which sub...

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  11. Which of the following reactions is involved in black and white photog...

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  12. Which of the following is not a combination reaction?

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  13. Which of the following is not a double displacement reaction?

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  14. The addition of oxygen to a substance is called

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  15. Identify the following type of reaction. 2KCIO3underset("catalyst")o...

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  16. Which of the following pairs will give displacement reactions?

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  17. Which of the following is a chemical change?

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  18. When copper sulphate solution reacts with iron metal, copper metal is ...

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  19. Which information is not conveyed by a balanced chemical equation?

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  20. The process of respiration is:

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