CBSE Class 12 Relations and Functions Multiple Choice Questions with Answers. MCQ Questions Class 12 Relations and Functions with Answers Is Prepared Based on Latest Exam Pattern. Students can solve NCERT MCQ questions Class 12 Relations and Functions with Answers to know their preparation level.
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MCQ Questions Class 12 Relations and Functions with Answers - Set - 1
Question 1:
If A, B and C are three sets such that A ∩ B = A ∩ C and A ∪ B = A ∪ C. then
(a) A = B
(b) A = C
(c) B = C
(d) A ∩ B = d
Correct Answer – (C)
Question 2:
The function f(x) = log (x² + √(x2 + 1) is
(a) even function
(b) odd function
(c) Both
(d) None of these
Correct Answer – (A)
Question 3:
The range of the function f(x) = √[(x-1)(x-3)] is
(a) [1, 3]
(b) [0, 1]
(c) [-2, 2]
(d) None of these
Correct Answer – (A)
Question 4:
If an operation is defined by a* b = a² + b², then (1 * 2) * 6 is
(a) 12
(b) 28
(c) 61
(d) None of these
Correct Answer – (C)
Question 5:
What type of a relation is R = {(1, 3), (4, 2), (2, 4), (2, 3), (3, 1)} on the set A – {1, 2, 3, 4}
(a) Reflexive
(b) Transitive
(c) Symmetric
(d) None of these
Correct Answer – (D)
MCQ Questions Class 12 Relations and Functions With Answers
Question 6:
Let E = {1, 2, 3, 4} and F = {1, 2} Then, the number of onto functions from E to F is
(a) 14
(b) 16
(c) 12
(d) 8
Correct Answer – (A)
Question 7:
If f: R → R defined by f(x) = 2x + 3 then f-1(x) =
(a) 2x – 3
(b) (x-3)/2
(c) (x+3)/2
(d) None of these
Correct Answer – (B)
Question 8:
Consider the binary operation * on a defined by x * y = 1 + 12x + xy, ∀ x, y ∈ Q, then 2 * 3 equals
(a) 31
(b) 40
(c) 43
(d) None of these
Correct Answer – (A)
Question 9:
If F : R → R such that f(x) = 5x + 4 then which of the following is equal to f-1(x).
(a) (x-5)/4
(b) (x-y)/5
(c) (x-4)/5
(d) (x/4) – 5
Correct Answer – (C)
Question 10:
If f(x1) = f (x2) ⇒ x1 = x2 ∀ x1 x2 ∈ A then the function f: A → B is
(a) one-one
(b) one-one onto
(c) onto
(d) many one
Correct Answer – (A)
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