A student heated some sulphur in a spatula and collected the gas 'X'. Which one among the following is correct about 'X'?

X is SO3 and it turns dry litmus to blue

X is SO2 and it turns moist litmus to red

X is SO3 and it turns moist litmus to red

X is SO2 and it turns moist litmus to blue

A student heated some sulphur in a spatula and collected the gas 'X'.

1.	A student heated some sulphur in a spatula and collected the gas 'X'. Which one among the following is correct about 'X'?
A.	X is SO2 and it turns moist litmus to red
B.	X is SO3 and it turns dry litmus to blue
C.	X is SO3 and it turns moist litmus to red
D.	X is SO2 and it turns moist litmus to blue
Answer» B. X is SO3 and it turns dry litmus to blue