ECAT Mathematics Chapter 4 online mcq test with answers for chapter 4 (Functions and Groups)

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Sr.#	Question	Answer
1		A. bijective function B. into function C. onto function D. surjective
2	The group of a constant line is	A. Vertical line B. Parabola C. Circle D. Horizontal line
3	Which of the following diagrams represent bijective function?	A. B. C. D.
4	A function from A to B is called on-to function, if its range is	A. A B. B C. A and B D. neither A nor B
5	(a,b) (c,d) if and only if	A. a = b and c =d B. a = d and b = c C. a = c and b = d D. a - b = c - d
6	If no two elements of ordered pairs of a function from A onto B are the same, then it is called	A. surjective B. injuctive C. bijective D. on to
7	Addition is not operation on	A. Natural numbers B. Even numbers C. odd numbers D. set of integers
8	ax+by+c = 0 , represents a	A. Circle B. Parabola C. Straight line D. Quadratic circle
9	If A is non-empty set, any subset of AxA is called a relation in a	A. A B. B C. D D. r
10	N is closed with respect to ordinary	A. addition B. multiplication C. addition and multiplication D. division
11	There will be no inverse if the function is	A. one -to - one B. One to many C. onto D. into
12	Function is a special type of	A. relation B. ordered pairs C. cartesian product D. sets
13	A relation a into B in which Domain is not equal to a, is called.	A. Into function B. on to function C. None of these D. Surjective
14	If range of a function f is B, then the function is	A. surjective B. injuctive C. bijective D. into
15	Extraction of square root of a given number is a	A. unary operation B. binary operation C. group D. inverse function
16		A. B. C. D.
17		A. B. C. D.
18	Which of the following diagrams represent into function?	A. B. C. D.
19	Which of the following is surjective	A. B. C. D.
20	The set of second elements of the ordered pairs forming a relation is called a	A. Domain B. range C. function D. relation
21	If the number of elements in set A is n, and in set B is m, then the number of elements in AxB will	A. n^m B. mⁿ C. m x n D. m + n
22	The graph of a constant line is	A. vertical line B. parabola C. circle D. horizontal line
23	The inverse of a line is	A. inverse B. Line C. quadratic D. Circle
24	Which of the following notation defines AxB	A. B. C. D.