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Maths Relations and Functions Class 12 MCQ and Assertion Questions

CBSE Past Year MCQ Quiz · Class 12 · Maths · CBSE

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Chapter 1 Class 12 Relation and Functions | 3 questions | about 3 minutes

Practise Relations and Functions Class 12 with Teachoo's CBSE Past Year MCQ Quiz (Class 12 · Maths · CBSE). Practise these questions in a free interactive quiz with answer feedback.

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Question 1 of 3
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Question 1 of 3
CBSE Board Exam 2026
Assertion (A) : A relation R on the set \(\{1,2,3\}\) defined as \(\mathrm{R}=\{(1,1),(1,2),(2,1),(2,2),(3,3)\}\) is an equivalence relation.

Reason (R) : A relation that is reflexive, symmetric and transitive is an equivalence relation.
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Question 2 of 3
CBSE Board Exam 2026
Assertion (A) : A function \(\mathrm{f}: \mathrm{N} \rightarrow \mathrm{N}\) given by \(\mathrm{f}(\mathrm{x})=\mathrm{x}^3+2, \forall \mathrm{x} \in \mathrm{N}\) is one-one but not onto.

Reason (R) : Since \(\forall \mathbf{y} \in \mathbf{N}\) (Codomain), there does not exist \(\mathbf{x}=(\mathbf{y}-2)^{1 / 3}\) in N (Domain) such that \(\mathrm{f}(\mathrm{x})=\mathrm{x}^3+2=\mathrm{y}\).
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Question 3 of 3
CBSE Board Exam 2026
A relation \(R\) on set \(A=\{1,2,3\}\) is defined as \(R=\{(1,3),(3,3),(1,1),(2,2)\), (3, 1)\} is
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