Exambodh - Practice Aptitude, Reasoning & GK Questions
Play Quiz
SSC CGL
mediumQ. No. 14876

In which reaction does S oxidation number increase?

Last Updated:

This SSC CGL Chemistry question asks: “In which reaction does S oxidation number increase?” The correct answer is SO2 to SO3. S in SO2 has +4 oxidation state and in SO3 has +6. Redox questions should identify oxidation as electron loss or increase in oxidation number and reduction as electron gain or decrease in oxidation number.

AH2SO4 to SO2
BS to H2S
CS to SO2
DSO2 to SO3
Correct Answer: SO2 to SO3Your Answer: D

Explanation

tate and in SO3 has +6. Option A (“H2SO4 to SO2”) is incorrect because it does not satisfy the chemical formula, reaction, periodic trend, numerical relation, oxidation state or definition required by the question. Option B (“S to H2S”) is incorrect because it does not satisfy the chemical formula, reaction, periodic trend, numerical relation, oxidation state or definition required by the question. Option C (“S to SO2”) is incorrect because it does not satisfy the chemical formula, reaction, periodic trend, numerical relation, oxidation state or definition required by the question. Identify the governing formula, definition or reaction and apply it consistently. The answer field, correct index and explanation therefore all identify SO2 to SO3. S in SO2 has +4 oxidation state and in SO3 has +6.

Related Questions

View All
14964Which metal is the best conductor of electricity?14963Which of the following is the correct IUPAC name of CH3-CH=CH-CH3?14962What is the overall cell reaction in a Daniell cell?
Previous QuestionNext Question

Test your SSC CGL Chemistry knowledge

Start Topic Test

FAQ

SSC CGL Chemistry FAQs

Common questions and clear answers for this topic.

How many chemistry questions typically appear in the SSC CGL exam?

Chemistry usually contributes a handful of questions within the General Awareness section, generally covering basic concepts rather than calculation-heavy problems.

Which chemistry topics are most important for SSC CGL preparation?

Atomic structure, periodic table trends, acids-bases-salts, metals and non-metals, and carbon compounds are the areas that appear most consistently across past papers.

Is NCERT chemistry enough to prepare for SSC CGL?

NCERT textbooks from classes 9 and 10 cover most of the conceptual base needed, though supplementing with general knowledge about everyday chemical compounds helps too.

What is the best way to remember chemical reactions and formulas for SSC CGL?

Linking reactions to real-world examples, like rusting or antacids, makes them easier to recall than memorizing formulas in isolation.

Does the SSC CGL chemistry syllabus overlap with the school board syllabus?

Yes, a large part of the syllabus mirrors class 9 and 10 science, making school-level revision a practical starting point.

Same Topic MCQs

View All
Which metal is the best conductor of electricity?Which of the following is the correct IUPAC name of CH3-CH=CH-CH3?What is the overall cell reaction in a Daniell cell?
In which reaction does S... | SSC CGL Chemistry MCQ | Exambodh