Question

On strong heating, sulphur burns in the air with blue flame and gives out:

• A. $S{O}_2$
• B. $S{O}_3$
• C. both $A$ and $B$
• D. none of the above

Answer 1

Answer: (C)

both $A$ and $B$

Sulfur burns with a blue flame concomitant with the formation of sulfur dioxide notable for suffocating odor. The principal sulfur oxides are sulfur dioxide and sulfur trioxide.