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15. Select the correct answers: NCERT- book back one mark questions - III

Select the correct answer:

1. Write the balanced chemical equation for the following.

Magnesium(s) + Hydrochloric acid(aq) → Magnesium chloride(aq) + Hydrogen(g)

\(Mg\)(s) + \(HCl\)(aq) → \(MgCl_2\)(aq) + \(H_2\)(g)
\(Mg\)(s) + \(2HCl\)(aq) → \(MgCl_2\)(aq) + \(H_2\)(g)
\(Mg\)(s) + \(2HCl\)(aq) → \(MnCl_2\)(aq) + \(H_2\)(g)
\(Mn\)(s) + \(2HCl\)(aq) → \(MgCl_2\)(aq) + \(H_2\)(g)

2. Identify the type of the following reaction.

Potassium bromide(aq) + Barium iodide(aq) → Potassium iodide(aq) + Barium bromide(s)

Combination reaction
Decomposition reaction
Redox reaction
Double displacement reaction
Displacement reaction

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