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Class 11 Chemistry — Chapter 3: Classification of Elements and Periodicity
90 practice questions · 30 Easy · 30 Medium · 30 Hard
Free NCERT-aligned multiple-choice practice for Class 11 Chemistry, Chapter 3 (Classification of Elements and Periodicity). Practise timed Easy, Medium and Hard quizzes with instant explanations — built for CBSE Board exams, JEE Main and NEET UG. Here are a few sample questions; sign in free to practise all 90.
Sample questions
Q1Easy
Modern periodic table is arranged by:
A.Atomic mass
B.Atomic number✓ correct
C.Density
D.Colour
Why
Moseley's law: properties are periodic functions of Z.
Q2Medium
Down a group, atomic radius:
A.Increases✓ correct
B.Decreases
C.Constant
D.Random
Why
More shells added.
Q3Hard
Most electronegative element:
A.Fluorine✓ correct
B.Oxygen
C.Chlorine
D.Nitrogen
Why
F has highest Pauling electronegativity (3.98).
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