Which of the following is the key step in the manufacture of sulphuric

1.	Which of the following is the key step in the manufacture of sulphuric acid?
A.	Burning of sulphur or sulphide ores in air to generate \[S{{O}_{2}}\].
B.	Conversion of \[S{{O}_{2}}\] to \[S{{O}_{3}}\] by the reaction with oxygen in presence of catalyst.
C.	Absorption of \[S{{O}_{3}}\] in \[{{H}_{2}}S{{O}_{4}}\] to give oleum.
D.	Both [b] and [c]
Answer» C. Absorption of \[S{{O}_{3}}\] in \[{{H}_{2}}S{{O}_{4}}\] to give oleum.

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Which of the following is the key step in the manufacture of sulphuric acid?

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