When hydrogen burns in oxygen, water is formed. The type of chemical change involved is:

combustion

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evaporation

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displacement

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decomposition

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Solution

The correct option is A combustion
The reaction for the same is
$H_{2 (q)} + \frac{1}{2} O_{2 (q)} ⟶ H_{2} O_{(q)}$
The type of chemical change involved is combustion because combustion is burning of reactant in the pressure of oxygen.
$\to$ Here $H_{2}$ burned in pressure of $O_{2} \to H_{2} O$

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When hydrogen burns in oxygen, water is formed. The type of chemical change involved is:

The correct option is A combustionThe reaction for the same isH2(q)+12O2(q)⟶H2O(q)The type of chemical change involved is combustion because combustion is burning of reactant in the pressure of oxygen.→ Here H2 burned in pressure of O2→H2O

The correct option is A combustion
The reaction for the same is
$H_{2 (q)} + \frac{1}{2} O_{2 (q)} ⟶ H_{2} O_{(q)}$
The type of chemical change involved is combustion because combustion is burning of reactant in the pressure of oxygen.
$\to$ Here $H_{2}$ burned in pressure of $O_{2} \to H_{2} O$