Question

The compound, which is soluble in water but does not impede the oxygen transportation, is

• A. NO
• B. $S{O}_2$
• C. CO
• D. $S{O}_3$

Answer 1

The correct option is B $S{O}_2$

• SO2 is a soluble compound that dissolves in water but not in blood and so it does not impede oxygen transport.
• CO and NO both compete with oxygen for binding with haemoglobin. SO3 is insoluble.
• Hence, The compound, which is soluble in water but does not impede oxygen transportation, is SO2
• So, the correct answer is 'SO2'.