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.What is meant by a dipole molecule? Select the correct explanation using hydrogen chloride as an example.
- A.A molecule with equal electron distribution, where no partial charges exist, as seen in HCl due to similar electronegativities of H and Cl.
- B.A molecule with unequal electron distribution, resulting in partial positive and negative charges, such as HCl where Cl is more electronegative than H (Hδ⁺—Clδ⁻).
- C.A molecule where electrons are completely transferred from one atom to another, forming ions, as in HCl where H becomes H⁺ and Cl becomes Cl⁻.
- D.A molecule with no polar bonds, where the atoms share electrons equally, such as HCl due to its linear structure.
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2.(a) Which of the following is not a common characteristic of an electrovalent compound?
- A.High melting point.
- B.Conducts electricity when molten.
- C.Consists of oppositely charged ions.
- D.Ionizes when dissolved in water.
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3.Which of the following correctly defines a coordinate bond and states the conditions necessary for its formation?
- A.A coordinate bond is a covalent bond where both atoms share electrons equally, and it forms when both atoms have lone pairs of electrons.
- B.A coordinate bond is a type of covalent bond where the shared pair of electrons comes from only one atom (donor), and it forms when the donor has a lone pair and the acceptor has an empty orbital.
- C.A coordinate bond is an ionic bond where one atom donates an electron to another, and it forms when the acceptor atom has a high electronegativity.
- D.A coordinate bond is a metallic bond where electrons are delocalized, and it forms when both atoms have partially filled orbitals.
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4.Compare the properties of sodium atom (Na) and sodium ion (Na⁺). Which of the following correctly describes a key difference between them?
- A.Sodium atom (Na) is colourless and chemically inactive, while sodium ion (Na⁺) is silvery white and chemically active.
- B.Sodium atom (Na) has an incomplete valence shell and is chemically active, while sodium ion (Na⁺) has a complete valence shell and is chemically inactive.
- C.Sodium atom (Na) is non-poisonous and exists independently, while sodium ion (Na⁺) is poisonous and exists in a combined state.
- D.Sodium atom (Na) and sodium ion (Na⁺) both have identical chemical properties and valence shell configurations.
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5.Bonding in this molecule can be understood to involve coordinate bonding.
- a.Carbon tetrachloride
- b.Hydrogen
- c.Ammonium chloride
- d.Hydrogen chloride
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