ICSE Class 10 Classification of Elements and Periodicity in Properties — Mock Test (2027)
Free online mock test for Classification of Elements and Periodicity in Properties (ICSE Class 10 Chemistry) — 87 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 Classification of Elements and Periodicity in Properties 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.Among P, S, Cl and F, which element has the most negative and which has the least negative electron gain enthalpy?
- A.Most negative Cl; least negative P
- B.Most negative F; least negative S
- C.Most negative Cl; least negative F
- D.Most negative F; least negative P
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2.Among the second period elements, why does beryllium have a higher first ionization enthalpy than boron?
- A.Beryllium loses a 2s-electron which penetrates and is attracted to the nucleus more than the 2p-electron lost by boron.
- B.Beryllium has a greater nuclear charge than boron.
- C.Boron has a completely filled 2p subshell.
- D.Beryllium is a metal while boron is a non-metal.
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3.The enthalpy change when an electron is added to a neutral gaseous atom to form a negative ion is called the:
- A.electron gain enthalpy
- B.ionization enthalpy
- C.lattice enthalpy
- D.atomization enthalpy
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4.According to Newlands' Law of Octaves, every eighth element had properties similar to the first when elements were arranged in order of increasing:
- A.atomic weight
- B.atomic number
- C.nuclear charge
- D.ionization enthalpy
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5.Which of the following statements related to the modern periodic table is INCORRECT?
- A.The d-block has 8 columns because a maximum of 8 electrons can occupy a d-subshell.
- B.The p-block has 6 columns because a maximum of 6 electrons can occupy the p-orbitals.
- C.Each block contains a number of columns equal to the number of electrons that can occupy that subshell.
- D.The block indicates the value of the azimuthal quantum number (l) for the last subshell that received electrons.
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