ICSE Class 10 Chemical Bonding and Molecular Structure — Mock Test (2027)
Free online mock test for Chemical Bonding and Molecular Structure (ICSE Class 10 Chemistry) — 92 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 and Molecular Structure 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.According to the orbital overlap concept, the strength of a covalent bond is decided by the:
- A.Extent of overlap of the atomic orbitals
- B.Number of lone pairs
- C.Atomic number of the atoms
- D.Mass of the atoms
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2.Which property is best explained by molecular orbital theory but NOT by valence bond theory or the Lewis approach?
- A.The paramagnetism of the O2 molecule
- B.The tetrahedral shape of CH4
- C.The bond angle in H2O
- D.The ionic character of NaCl
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3.Bond enthalpy is defined as the amount of energy required to do which of the following?
- A.Break one mole of bonds of a particular type between two atoms in the gaseous state
- B.Form one mole of bonds between two atoms in the solid state
- C.Separate one mole of an ionic solid into gaseous ions
- D.Remove one electron from a gaseous atom
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4.Which of the following is a drawback of the octet theory?
- A.It does not account for the shape of molecules
- B.It correctly predicts all bond angles
- C.It explains the energy of every molecule
- D.It applies to all noble gas compounds
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5.What is the total number of sigma and pi bonds in the ethyne molecule, C2H2?
- A.3 sigma and 2 pi
- B.2 sigma and 3 pi
- C.5 sigma and 0 pi
- D.4 sigma and 1 pi
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