61. Which of the following occurs in the contact process?
A. Sulphar dioxide is dissolved in water
B. sulphur trioxide is dissolved in water
D. Sulphuric trioxide is dissolved concentrated sulphuric acid 8. None of the above.
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Explanation:
Directly dissolving sulphur trioxide in water is not possible due to highly exothermic nature of the reaction. Acidic vapors are formed. Oleum is reacted with water to form conc. sulphuric acid.
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