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ICSE Class 10 Chemistry 2023 Paper

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SECTION - I
Choose the correct answers to the questions from the given options.
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Question : 10 of 88
Marks: +1, -0
The salt formed when concentrated sulphuric acid reacts with KNO3\mathrm{KNO}_3 above 200∘ C200^{\circ}\,\mathrm{C} :
Solution:  
(a) K2SO4\mathrm{K}_2\mathrm{SO}_4
Explanation:
  H2SO4(conc.)+2KNO3→200∘ Cabove\;\mathrm{H}_2{\mathrm{SO}_4}_{\text{(conc.)}} + 2\mathrm{KNO}_3 \xrightarrow[200^{\circ}\,\mathrm{C}]{\text{above}} K2SO4+\mathrm{K}_2\mathrm{SO}_4+   2HNO3(g)\;2\mathrm{HNO}_3(\mathrm{g})
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