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SSC CGL
mediumQ. No. 14927-which-of-the-following-has-zero-dipole-moment

Which of the following has zero dipole moment?

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This SSC CGL Chemistry question asks: “Which of the following has zero dipole moment?” The correct answer is BF3. BF3 is a planar trigonal molecule. Due to its symmetrical geometry the individual bond dipoles cancel giving zero net dipole moment. Option A (“H2O”) 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 (“NH3”) is incorrect because it does not satisfy the chemical formula, reaction, periodic trend, numerical relation, oxidation state or definition required by the question. The option BF3 agrees with accepted chemical principles and the wording of the question.

AH2O
BNH3
CBF3
DHF
Correct Answer: BF3Your Answer: C

Explanation

ipoles cancel giving zero net dipole moment. Option A (“H2O”) 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 (“NH3”) 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 BF3. BF3 is a planar trigonal molecule. Due to its symmetrical geometry the individual bond dipoles cancel giving zero net dipole moment.

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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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