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ECAT Mathematics Chapter 5 Matrices and Detarminants Online Test MCQs With Answers
Question # 1
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Question # 2
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Question # 3
An equation of the form ax + by = k is homogeneous linear equation when:
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Question # 4
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all are correct
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Question # 5
The order of the matrix [1 2 3] is
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1 x 1
3 x 3
3 x 1
1 x 3
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Question # 6
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Question # 7
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(2x+a+b+c)
(a+b+c)
(a+b+c+x)
0
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Question # 8
The square matrix A is skew Hermitian when (A)'=
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A
A'
-A
A
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Question # 9
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Question # 10
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a = 2, b = 3
a = 3, b = 2
a = 2, b = 1, 2
a = 3, b = 3
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Question # 11
We also the system of non-homogeneous linear equations by
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a and b
b and c
c and a
a, b and c
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Question # 12
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5
15
10
20
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Question # 13
A diagonal matrix in which the diagonal elements are equal is called a
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Null matrix
Identity matrix
Scalar matrix
Row matrix
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Question # 14
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Question # 15
A = [3] is a/an
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Square matrix
Scalar matrix
Diagonal matrix
Identity matrix
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Question # 16
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Symmetric
Skew-symmetric
Hermitian
Skew hermitian
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Question # 17
For non-trival solution |A| is
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non zero
A = 0
|A| = 0
At = 0
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Question # 18
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A
-
A
t
-A
A
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Question # 19
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An upper triangular matrix
A lower triangular matrix
A diagonal matrix
A null matrix
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Question # 20
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Question # 21
The transpose of a row matrix is a ______
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Zero matrix
Diagonal matrix
Column matrix
Row matrix
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Question # 22
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K/6
2K
3K
6K
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Question # 23
The matrix A = [aij]mxn with m≠n is
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Rectangular
Symmetric
Square
None
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Question # 24
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Question # 25
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1
0
3
-1
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Question # 26
If A is skew Hermitian Matrix then which of the following is not skew Hermitian matrix
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A2
A5
A3
A7
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Question # 27
A matrix in which the number of rows is not equal to the number of columns is called a
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Diagonal matrix
Rectangular matrix
Square matrix
Scalar matrix
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Question # 28
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0
1
2
3
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Question # 29
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Question # 30
Matrix multiplication is
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Commutative
Not commutative
Not associative
Not distributive
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Question # 31
If order of A is m x n, then order of A
t
is
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m x m
n x n
m x n
n x m
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