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SSC CGL
mediumQ. No. 14912-which-quantum-number-determines-the-shape-of-orbital

Which quantum number determines the shape of orbital?

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This SSC CGL Chemistry question asks: “Which quantum number determines the shape of orbital?” The correct answer is Azimuthal quantum number l. Azimuthal quantum number l determines the shape of orbital. Redox questions should identify oxidation as electron loss or increase in oxidation number and reduction as electron gain or decrease in oxidation number. Acid basicity refers to the number of ionisable protons, not simply the number of hydrogen atoms written in a formula. Option A (“Principal quantum number n”) is incorrect because it does not satisfy the chemical formula, reaction, periodic trend, numerical relation, oxidation state or definition required by the question.

APrincipal quantum number n
BAzimuthal quantum number l
CMagnetic quantum number m
DSpin quantum number s
Correct Answer: Azimuthal quantum number lYour Answer: B

Explanation

mines the shape of orbital. Option A (“Principal quantum number n”) 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 (“Magnetic quantum number m”) is incorrect because it does not satisfy the chemical formula, reaction, periodic trend, numerical relation, oxidation state or definition required by the question. Option D (“Spin quantum number s”) is incorrect because it does not satisfy the chemical formula, reaction, periodic trend, numerical relation, oxidation state or definition required by the question. The answer field, correct index and explanation therefore all identify Azimuthal quantum number l. Azimuthal quantum number l determines the shape of orbital.

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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.

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