See image — AITS & Test Series Chemistry Question

💡 Solution & Explanation

 2 SO g NaOH solution  2 H S g 2 3 Na SO S Warm 2 3 Na SO S  Na + O   S S O O Na Algebric sum of oxidation states of sulphur atoms present in a molecule of compound ‘Z’ = + 6 – 2= + 4