More Classes
5th Class
6th Class
7th Class
8th Class
9th Class
10th Class
11th Class
12th Class
NAT I
NAT II
CSS
IQ
General Knowledge
MDCAT
ECAT
GAT General
GAT Subject
Other Links
Go to Home
Online Tests
ECAT Mathematics Chapter 5 Matrices and Detarminants Online Test MCQs With Answers
Question # 1
Choose an answer
4A - 3I
3A - 4I
A - I
None of these
Previous
Skip
Next
Question # 2
Choose an answer
Previous
Skip
Next
Question # 3
Choose an answer
2
4
6
8
Previous
Skip
Next
Question # 4
Let A be a square matrix. Then, 1/2 (A-A') is
Choose an answer
Skew-symmetric
Symmetric
Null
None of the above
Previous
Skip
Next
Question # 5
If A is a non singular matrix then A
-1
= ______
Choose an answer
Previous
Skip
Next
Question # 6
Choose an answer
-3
-7
1
0
Previous
Skip
Next
Question # 7
Choose an answer
1
0
3
-1
Previous
Skip
Next
Question # 8
If A = [aij]mxpand B =[aij]pxnthen order of BA is
Choose an answer
m x n
p x n
n x m
None of these
Previous
Skip
Next
Question # 9
System of linear equation is inconsistent if
Choose an answer
System has no solution
System has one solution
System has two solution
None of above
Previous
Skip
Next
Question # 10
Choose an answer
16
None of these
Previous
Skip
Next
Question # 11
Choose an answer
Previous
Skip
Next
Question # 12
Choose an answer
all are correct
Previous
Skip
Next
Question # 13
Choose an answer
1
0
-1
2
Previous
Skip
Next
Question # 14
Choose an answer
(2x4)
(2x7)
(2x3)
(7x2)
Previous
Skip
Next
Question # 15
A and B be two square matrices and if their inverse exist, the (AB)
-1
=
Choose an answer
A
-1
B
-1
AB
-1
A
-1
B
B
-1
A
-1
Previous
Skip
Next
Question # 16
(ABC)' =
Choose an answer
CBA'
CBA
C' B' A'
None of these
Previous
Skip
Next
Question # 17
In order of A is m x n and order of B is n x p then order of AB is
Choose an answer
m x m
n x n
m x p
p x m
Previous
Skip
Next
Question # 18
Choose an answer
16
256
64
1024
Previous
Skip
Next
Question # 19
A matrix in which the number of rows is not equal to the number of columns is called a
Choose an answer
Diagonal matrix
Rectangular matrix
Square matrix
Scalar matrix
Previous
Skip
Next
Question # 20
We also the system of non-homogeneous linear equations by
Choose an answer
a and b
b and c
c and a
a, b and c
Previous
Skip
Next
Question # 21
The order of the matrix A is 3 x 2 and that of B is 2 x 3. The order of the matrix BA is
Choose an answer
3 x 3
3 x 2
2 x 5
5 x 2
Previous
Skip
Next
Question # 22
If order of A is m x n, then order of A
t
is
Choose an answer
m x m
n x n
m x n
n x m
Previous
Skip
Next
Question # 23
Choose an answer
5
15
10
20
Previous
Skip
Next
Question # 24
Choose an answer
Previous
Skip
Next
Question # 25
Choose an answer
0
1
2
4
Previous
Skip
Next
Question # 26
The number of non zero rows in echelon form of a matrix is called
Choose an answer
Order of matrix
Rank of matrix
Row operation
None of these
Previous
Skip
Next
Question # 27
Choose an answer
Singular
Non-singular
Adjoint
None of above
Previous
Skip
Next
Question # 28
If A is any matrix then its additive inverse is
Choose an answer
A
A
-1
A
t
-A
Previous
Skip
Next
Question # 29
A square matrix A = [aij] is lower triangular matrix when
Choose an answer
aij = 0 for all i<j
bij = 0
cij = 0
dij = 0
Previous
Skip
Next
Question # 30
If for the matrix A, A
5
= I, then A
-1
=
Choose an answer
A
2
A
3
A
None of above
Previous
Skip
Next
Question # 31
If the matrices A and B are conformable for multiplication then (AB)
t
= ______
Choose an answer
AB
A
t
B
t
B
t
A
t
A
t
B
Previous
Skip
Next
Back