ICSE Class 10 Chemical Bonding — Mock Test (2027)
Free online mock test for Chemical Bonding (ICSE Class 10 Chemistry) — 20 competency-based questions based on the latest CISCE 2027 syllabus, with instant marking. Try the samples below, then take the full test free.
What to expect: This mock test covers key concepts from the Chemical Bonding chapter — including application-based and competency-focused questions aligned with how ICSE actually sets the paper.
Tip: Attempt without notes first to identify gaps, then review explanations for any wrong answers. Retake after a few days for best retention.
Sample questions
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1.Compare the properties of electrovalent and covalent compounds. Which of the following correctly summarizes their key differences?
- A.Electrovalent compounds are solids with high melting points, conduct electricity in solution, and are soluble in water; covalent compounds are gases or liquids with low melting points, do not conduct electricity, and are soluble in organic solvents.
- B.Electrovalent compounds are liquids with low boiling points, conduct electricity in solid state, and are insoluble in water; covalent compounds are solids with high melting points and are soluble in water.
- C.Electrovalent compounds are gases with weak intermolecular forces, do not conduct electricity, and are soluble in organic solvents; covalent compounds are solids with strong electrostatic forces and conduct electricity in molten state.
- D.Electrovalent compounds have low melting points and are insoluble in water; covalent compounds have high boiling points, conduct electricity in solution, and are soluble in organic solvents.
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2.Which rule governs the combination of atoms to form molecules, and has the following limitations: (i) it cannot explain molecules where the central atom has more than eight valence electrons, and (ii) it cannot explain molecules where the central atom has fewer than eight valence electrons?
- A.Dual rule
- B.Octet rule
- C.Valency rule
- D.Electron pair rule
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3.Assertion: Hydrogen bonding leads to higher boiling points in compounds like water. Reason: Hydrogen bonding is a type of strong dipole-dipole attraction that occurs between molecules. (a) Assertion and reason both are correct statements and reason is the correct explanation of the assertion. (b) Assertion and reason both are correct statements, but reason is not the correct explanation of the assertion. (c) Assertion is false, but reason is true (d) Assertion is true, but reason is false.
- a.Assertion and reason both are correct statements and reason is the correct explanation of the assertion.
- b.Assertion and reason both are correct statements, but reason is not the correct explanation of the assertion.
- c.Assertion is false, but reason is true
- d.Assertion is true, but reason is false.
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4.Taking MgCl₂ as an electrovalent compound and CCl₄ as a covalent compound, which of the following correctly states a key difference between electrovalent and covalent compounds?
- A.Electrovalent compounds like MgCl₂ consist of ions and have high melting points, while covalent compounds like CCl₄ consist of molecules and have low melting points.
- B.Electrovalent compounds are always soluble in organic solvents, while covalent compounds dissolve only in water.
- C.Covalent compounds conduct electricity in molten state, whereas electrovalent compounds do not conduct electricity at all.
- D.Electrovalent compounds involve electron sharing, while covalent compounds involve complete transfer of electrons.
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5.What type of bond is formed between two atoms by sharing a pair of electrons, where both electrons are provided by the same atom?
- A.Ionic bond
- B.Covalent bond
- C.Coordinate bond
- D.Metallic bond
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