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Class 11 Mathematics — Chapter 1: Sets
68 practice questions · 23 Easy · 23 Medium · 22 Hard
Free NCERT-aligned multiple-choice practice for Class 11 Mathematics, Chapter 1 (Sets). 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 68.
Sample questions
Q1Easy
The empty set is denoted by:
A.0
B.{0}
C.∅ (or {})✓ correct
D.U
Why
Empty set has no elements; written as ∅ or { }.
Q2Medium
If A = {1, 2, 3} and B = {3, 4, 5}, then A ∪ B is:
A.{3}
B.{1, 2, 3, 4, 5}✓ correct
C.{1, 2}
D.{4, 5}
Why
Union = all elements in either set (no repeats).
Q3Hard
In a class of 50 students, 30 like Maths and 25 like Physics; 10 like both. Number who like neither is:
A.5✓ correct
B.10
C.15
D.0
Why
n(M ∪ P) = 30 + 25 − 10 = 45. Neither = 50 − 45 = 5.
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