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ICSE Class 10 Chemistry 2022 Paper

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SECTION - I
Choose the correct answers to the questions from the given options.
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Question : 7 of 55
Marks: +1, -0
The metallic oxide which when reacts with HCl\mathrm{HCl} forms salt and water :
Solution:  
(d) Sodium oxide
Explanation :
Na2O+2HCl  (dil) sodium oxide→2NaCl+H2Osalt water\underset{\text{sodium oxide}}{\mathrm{Na}_2\mathrm{O} + 2\mathrm{HCl}\ \text{ (dil) }} \rightarrow \underset{\text{salt water}}{2\mathrm{NaCl} + \mathrm{H}_2\mathrm{O}}
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