11. Choose the best: NCERT- book back one mark questions - I

6 m.

Choose the best answer:

1. What happens when dilute hydrochloric acid is added to iron fillings? Tick the correct answer.

2. Translate the following statements into chemical equations and then balance them.

Hydrogen gas combines with nitrogen to form ammonia.

\(3H_2\) + \(N_2\) → \(2NH_3\)
\(2H_2\) + \(N_2\) → \(2NH_3\)
\(3H_2\) + \(N_2\) → \(2NO_3\)
\(3H_2\) + \(N_2\) → \(NH3\)
\(3H_2\) + \(N_2\) → \(2NH_5\)

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