✓ Board-verified
Science · 2026 · 2 marks
CBSE 2026 · Region 1 · Set 1 · Q25
(a)What are amphoteric oxides ?(b)Categorise the following based on their nature : $\displaystyle \mathrm{ZnO}, \mathrm{Na}_{2} \mathrm{O}, \mathrm{CO}_{2}$
(a)
What are amphoteric oxides ?
(b)
Categorise the following based on their nature : $\displaystyle \mathrm{ZnO}, \mathrm{Na}_{2} \mathrm{O}, \mathrm{CO}_{2}$
Marking-scheme solution
(a) Metal oxides which can react with both acids as well as bases to produce salt and water.
(b) ZnO - Amphoteric oxide \(\displaystyle \mathrm{Na}_{2} \mathrm{O}\) - Basic oxide \(\displaystyle \mathrm{CO}_{2}\) - Acidic oxide
More from Metals and Non-metals
- A metal, M, displaces iron from aqueous solution of ferrous sulphate but fails to do so in case of aqueous…2025 · asked 3×
- List two advantages of adopting the atomic number of an element as the basis of classification of elements in…2022 · asked 3×
- Attempt either or: (i) Write one example each of one metal that is so soft that it can be cut with a knife,…2026 · asked 3×
- The melting points and boiling points of some ionic compounds are given below: These compounds are termed…2023 · asked 3×
- Two metals zinc and tin are dissolved separately in definite proportions in molten copper (the primary metal)…2025 · asked 3×
- The metals produced by various reduction processes are not very pure. They contain impurities, which must be…2024 · asked 3×
- Read the following passage and answer the questions given below: Most of metals occur in combined state in…2026 · asked 3×
- The pH plays an important role in our daily life. Strength of acids and bases depends on the number of H^+…2026 · asked 3×
CBSE Class 10 Science past-paper question from the 2026board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.