Three different tests are done on an aqueous solution of S. The observations are as follows. 1. Magnesium shows no reaction with the solution. 2. When ammonium sulfate is heated with the solution, a gas is released. 3. On addition to the solution, methyl orange becomes yellow. What substance is S?
- Ahydrochloric acid
- Bsodium hydroxide
- Csodium chloride
- Dsulfur dioxide