Exams › JEE Main › Chemistry

In the following reactions, ZnO is respectively acting as a/an: (i) ZnO + Na2O → Na2ZnO2 (ii) ZnO + CO2 → ZnCO3

1. base and acid
2. base and base
3. acid and acid
4. acid and base

Correct answer: acid and base

Solution

In the first reaction, ZnO acts as an acid by reacting with the base Na2O to form a zincate, while in the second reaction, ZnO behaves as a base by reacting with CO2 to form zinc carbonate.

Related JEE Main Chemistry questions

• Which statement correctly describes how chemical reactivity changes down the group for alkali metals and halogens?
• Which of the following is a true peroxide?
• When zeolite, a hydrated sodium aluminium silicate, is used with hard water, which ions from the water replace the sodium ions in the zeolite?
• Among the following carbonates, which one is the least thermally stable?
• The solubility of carbonates falls as we move down the magnesium group because there is a reduction in the
• Which of the following salts fails to give any colour in a flame test?

⚔️ Practice JEE Main Chemistry free + battle 1v1 →