Question

The reaction $4{\mathrm{NH}}_3+5{\mathrm{O}}_2\to 4\mathrm{NO}+6{\mathrm{H}}_2\mathrm{O}$ is an example of I. Combination II. Displacement III. Redox IV, Neutralisation.

• A. I and II
• B. I and III
• C. II and III
• D. I and IV

Answer 1

The correct option is C

II and III

EXPLANATION FOR CORRECT OPTION

1. Displacement reaction

When a more reactive element displaces a less reactive element from its compound, it is a chemical displacement reaction.

2. Redox reaction

The reaction in which oxidation and reduction occur simultaneously is called a redox reaction.

Here, Oxygen displaces Nitrogen, so it is a displacement reaction. Here, oxidation and reduction take place simultaneously.

Thus, option (c) is correct, the reaction $4{\mathrm{NH}}_3+5{\mathrm{O}}_2\to 4\mathrm{NO}+6{\mathrm{H}}_2\mathrm{O}$ is an example of displacement and redox reaction.

EXPLANATION FOR INCORRECT SOLUTION

3. Combination reaction

A combination reaction occurs when two reactants combine to form a single product.

4. Neutralization reaction

The reaction in which an acid reacts with an alkali to form salt and water is a neutralisation reaction.