S-Block Elements - Online Mcqs Test - Chemistry 12th (Part II) Chemistry XII Class MCQs – S-Block Elements – 12th S-Block Elements – Online Mcqs Test (24 Mcqs) 1/24jQuizMe *Electrolysis of molten sodium chloride gives:Na and Cl2 Na and H2 Na and O2 H2 and O2 Chemistry Notes XII,Chemistry Online Mcqs XII S-Block Elements Chapter List | Theory & Question Answers | Scientific Reasons | Mcqs | Online Mcqs