Relevant Titles
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Periodic Classification of Elements Class 11 Chemistry MCQs with Answers
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CBSE Class 11 Chemistry Chapter 3 – Periodic Classification Practice Test
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Important MCQs on Classification of Elements for Class 11 Chemistry
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NCERT-Based Periodic Classification of Elements Class 11 Quiz Online
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CBSE Class 11 Chemistry Objective Questions – Periodic Trends Explained
Introduction Paragraph
Prepare effectively for your CBSE Class 11 Chemistry Board Exams with this exclusive online practice test on “Periodic Classification of Elements”, a key topic from Chapter 3 of Physical Chemistry. This chapter lays the foundation for understanding how elements are systematically arranged in the Modern Periodic Table based on their atomic numbers and recurring chemical properties.
These NCERT-based MCQs are carefully designed to test conceptual understanding of periodic trends such as atomic size, ionization energy, electron affinity, and electronegativity. Students will also revise concepts related to the modern periodic law, periodicity of properties, and classification of elements into s, p, d, and f blocks.
Each question includes instant feedback with correct answers and explanations, helping learners strengthen their grasp on key principles. Attempt this 30-question interactive quiz to assess your preparation, clarify doubts, and boost confidence for your Class 11 Chemistry CBSE Board Examination and competitive exams like NEET and JEE (Main).
Sample MCQs (with Answers and Explanations)
Q1. Who proposed the Modern Periodic Law?
A) Mendeleev B) Lothar Meyer C) Henry Moseley D) Dalton
Answer: C) Henry Moseley
Explanation: Moseley discovered that atomic number, not atomic mass, determines an element’s properties, forming the basis of the modern periodic law.
Q2. Which group of the periodic table contains noble gases?
A) Group 16 B) Group 17 C) Group 18 D) Group 15
Answer: C) Group 18
Explanation: Noble gases belong to Group 18 and are chemically inert due to their completely filled valence shells.
Q3. Across a period, atomic radius generally:
A) Increases B) Decreases C) Remains constant D) Increases then decreases
Answer: B) Decreases
Explanation: As nuclear charge increases across a period, electrons are pulled closer to the nucleus, reducing atomic size.
Q4. Which of the following has the highest electronegativity?
A) Sodium B) Oxygen C) Fluorine D) Chlorine
Answer: C) Fluorine
Explanation: Fluorine is the most electronegative element due to its small atomic radius and strong nuclear attraction.
Q5. The s-block elements are found in which groups?
A) Groups 1 and 2 B) Groups 3 and 4 C) Groups 13 and 14 D) Groups 17 and 18
Answer: A) Groups 1 and 2
Explanation: The s-block elements include alkali and alkaline earth metals, located in Groups 1 and 2 of the periodic table.