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.Hydrogen without any electron is:
- a.Deuterium
- b.Protium
- c.Tritium
- d.None of these
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2.Which of the following correctly lists the characteristic properties of covalent compounds?
- A.High melting and boiling points, conduct electricity, soluble in water, usually solids.
- B.Usually gases or liquids, low melting and boiling points, do not conduct electricity, generally insoluble in water but soluble in organic solvents.
- C.Always solids, conduct electricity in molten state, soluble in water, high melting points.
- D.Low melting points, conduct electricity in solid state, insoluble in organic solvents, usually liquids.
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3.What is the meaning of a lone pair of electrons?
- A.A pair of valence electrons that is not shared with another atom and remains localized on one atom.
- B.A pair of electrons that is shared equally between two atoms in a covalent bond.
- C.A single unpaired electron that participates in bond formation with another atom.
- D.A pair of electrons found in the innermost shell of an atom, not involved in bonding.
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4.A pair of electron which is not shared with another atom.
- a.Lone pair
- b.Bond pair
- c.Ionic bond
- d.Hydrogen bond
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5.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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