Oxides of aluminium and zinc are :
Oxides of aluminium and zinc are :
Options
Official answer
c
Marking scheme
- 1.1 Mark for selecting the correct option (c)
Hint
Recall the term used for metal oxides that can react with both acids and bases to produce salt and water.
Quick oral answer
Oxides of aluminium and zinc are amphoteric because they react with both acids (like ) and bases (like ) to produce salt and water.
Common mistakes
- 1.Students often generalize all metal oxides as basic and incorrectly choose option (b). Remember that aluminium and zinc oxides are key exceptions that show amphoteric behavior.
Analysis and explanation
According to the NCERT textbook, most metal oxides are basic in nature. However, some metal oxides, such as aluminium oxide () and zinc oxide (), show both acidic as well as basic behaviour. Such metal oxides which react with both acids as well as bases to produce salts and water are known as amphoteric oxides. Therefore, option (c) is correct.
- Option (a) is incorrect because these oxides are not purely acidic; they also exhibit basic properties.
- Option (b) is incorrect because although most metal oxides are basic, aluminium and zinc oxides are exceptions that also exhibit acidic properties.
- Option (d) is incorrect because neutral oxides do not react with either acids or bases, whereas amphoteric oxides react with both.
Interesting facts
Aluminium oxide () is used in the process of anodising to form a thick, protective, and corrosion-resistant layer on aluminium articles, which can also be easily dyed to give attractive finishes.
Question details
Q6 of 39 questions
- Board
- CBSE
- Class
- Class 10
- Subject
- Science
- Year
- 2024
- Section
- Section A
- Marks
- 1
- Type
- MCQ
- Chapter
- Metals and Non-metals
- Topic
- Chemical Properties of Metals
- Bloom's level
- Remembering
- Syllabus topic
- Chemical properties of metals: Reactivity with oxygen, amphoteric oxides
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Frequently asked questions
How many marks does this question carry in CBSE Class 10 Science 2024?
This question carries 1 mark in the CBSE Class 10 Science 2024 examination.
Which chapter does this question come from in Science?
This question is from the chapter "Metals and Non-metals" in the CBSE Class 10 Science syllabus.
What topic does this question cover in Science?
This question covers the topic "Chemical Properties of Metals" from CBSE Class 10 Science.
What type of question is this in the CBSE Class 10 Science 2024 paper?
This is a MCQ question from Section A in the CBSE Class 10 Science 2024 paper.