Observe the given figure carefully and identify the substances marked as (p), (q) and (r).

(p)- Zinc, (q)- Water, (r)- Carbon dioxide

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(p)- Magnesium, (q)- Hydrochloric acid, (r)- Oxygen

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(p)- Magnesium, (q)- Water, (r)- Carbon dioxide

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(p)- Zinc, (q)- Hydrochloric acid, (r)- Hydrogen

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Solution

The correct option is D (p)- Zinc, (q)- Hydrochloric acid, (r)- Hydrogen
$Z n + 2 H C l \to Z n C l_{2} + H_{2}$
ZInc Hydrochloric acid ZInc chloride Hydrogen

Hydrogen gas burns with a pop sound when burning splinter is brought near it.

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Similar questions

Write the balanced chemical equation for the following and identify the type of reaction in each case.

(a)Potassium bromide _(a_q₎ + Barium iodide _(aq) → Potassium iodide _(aq) +

Barium bromide_(s)

(b) Zinc carbonate ₍_s₎ → Zinc oxide ₍_s₎ + Carbon dioxide ₍_g₎

(d) Magnesium ₍_s₎+ Hydrochloric acid ₍_aq₎→ Magnesium chloride ₍_aq₎+ Hydrogen ₍_g₎

Write the balanced equations for the following reactions, and add the state symbols :

(a) Magnesium carbonate reacts with hydrochloric acid to produce magnesium chloride, carbon dioxide and water.

(b) Sodium hydroxide reacts with sulphuric acid to produce sulphate and water

H_{2} S O_{4}

H C l

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