ICSE Class 10 Chemistry 2018 Solved Paper

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Question : 49
Total: 80
Name the acid used for the preparation of hydrogen chloride gas in the laboratory. Why is this particular acid preferred to other acids?
Solution:  
Conc. Sulphuric acid is used.
It is preferred to other acids as it is highly nonvolatile, so will not evaporate at room temperature.
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