Q. Which of the following is not correct?
A) Iodine oxidises sodium thiosulphate to sodium tetrathionate.
B) Sodium thiosulphate is soluble in water.
C) Ozone is used to identify the presence of unsaturation in alkenes.
D) Sodium thiosulphate reacts with iodine to form sodium sulphate.
Explanation
(d)
$2Na_{2}S_{2}O_{3}\ \ \ \ \ \ \ \ \ \ + I_{2} \longrightarrow Na_{2}S_{4}O_{6}\ \ \ \ \ \ \ \ \ \ \ \ \ + 2NaI$
sodium thiosulphate sodium tetrathionate
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.