# Sets MCQ Questions for Class 11 Math’s Chapter 1 with Answers

## Q1. Empty set is a?

(i) Finite Set
(ii) Invalid Set
(iii) None of the above
(iv) Infinite Set

(i) Finite Set

(i) 5
(ii) 6
(iii) 16
(iv) 32

(iv) 32

(i) {0}
(ii) {1}
(iii) {1, 1}
(iv) {1, -1}

(i) {0}

(i) ∪ – A
(ii) A’
(iii) ∪
(iv) A

(iv) A

(i) 0 ∈ A
(ii) 2 ∈ A
(iii) 3 ∉ A
(iv) 5 ∉ A

(ii) 2 ∈ A

(i) {2}
(ii) {2, 4}
(iii) {2,14}
(iv) {2, 4, 14}

(i) {2}

## Q7. If A = {x, y} then the power set of A is :

(i) {xx, yy}
(ii) {f, x, y}
(iii) {f,{x},{2y}}
(iv) {f,{x},{y},{x,y}}

(iv) {f,{x},{y},{x,y}}

## Q8. Which of the following is not a set of letters of word PRINCIPAL?

(i) {P,R,I,N,C,A,L}
(ii) {C,A,P,I,N,R,L}
(iii) {P,R,I,N,C,I,P,A,L}
(iv) {L,N,I,P,C,A,R}

(iii) {P,R,I,N,C,I,P,A,L}

(i) (- ∞, ∞)
(ii) R – {3}
(iii) (- ∞, 0)
(iv) (0, – ∞)

(i) (- ∞, ∞)

(i) 2
(ii) 1
(iii) 4
(iv) 3

(iv) 3

## Q11. Let R be a relation N define by x + 2y = 8. The domain of R is

(i) {2, 4, 6, 8}
(ii) {1, 2, 3, 4}
(iii) {2, 4, 8}
(iv) {2, 4, 6}

(iv) {2, 4, 6}

## Q12. If A, B and C are any three sets, then A × (B ∪ C) is equal to

(i) (A × B) ∪ (A × C)
(ii) (A ∪ B) × (A ∪ C)
(iii) None of these
(iv) (A × B) ∩ (A × C)

(i) (A × B) ∪ (A × C)

(i) 8
(ii) 7
(iii) 9
(iv) 10

(iii) 9

(i) B∩C¢
(ii) A∩C
(iii) B∩ C
(iv) A∩C¢

(i) B∩C¢

## Q15. Which of the following properties are associative law ?

(i) A∪B = B∪ A
(ii) A∪C = C ∪ A
(iii) A∪D = D∪ A
(iv) (A∪B)∪C = A∪(B∪C)

(iv) (A∪B)∪C = A∪(B∪C)

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