ECAT Pre Computer Science chapter wise online mcq test with answers for Mathematics

ECAT Mathematics MCQ's Test For Full Book

Sr. #	Questions	Answers Choice
1	A diagonal matrix is always	Identity Triangular Scalar Non-singular
2	The matrix A = [aij]mxn with m ≠n is always	Symmetric Hermition Skew-symmetric None
3	The matrix A = [aij]1xn is a	Vector Rectangular matrix Column vector Square matrix
4	The matrix A = [aij]mxn with m≠n is	Rectangular Symmetric Square None
5	If the matrices A and B have the order 1 x 10 and 10 x 1 then order of AB is	1 x 1 1 x 10 10 x 10 10 x 1
6	If A and B are skew-symmetric then (AB)t is	At Bt AB -AB BA
7	Every identity matrix is	Row-vector Scalar Column-vector All
8	A non-homogeneous linear system AX = B has no solution if	\|A\| = 0 \|A\|≠ 0 Rank (a) = no of variables Rank > no of variables
9	If A is a non-singular matrix then adj A is	Non-singular Symmetric Singular Non defined
10	Matrix multiplication is	Commutative Not commutative Not associative Not distributive
11	If A = [aij]mxpand B =[aij]pxnthen order of BA is	m x n p x n n x m None of these
12	A = [3] is a/an	Square matrix Scalar matrix Diagonal matrix Identity matrix
13		all are correct
14
15
16
17		all are correct
18
19	Rank of matrix [1 3 5 0] is	1 3 2 4
20		5 -5 none
21		k3 0 3k k6
22	Which of the following is skew symmetric matrix
23	If A is skew Hermitian Matrix then which of the following is not skew Hermitian matrix	A2 A5 A3 A7
24
25		all
26		(2x+a+b+c) (a+b+c) (a+b+c+x) 0
27		16 256 64 1024
28		I3 rI3 r none
29		5 15 10 20
30		(2x4) (2x7) (2x3) (7x2)