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Mathematics ECAT Pre Engineering Chapter 5 Matrices and Determinants Online Test MCQs With Answers
Question # 1
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 # 2
The additive inverse of a matrix A is
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None of these
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Question # 3
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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 # 4
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Question # 5
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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Question # 6
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1, 2, 3
1, 5, 9
2, 5, 8
3, 6, 9
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Question # 7
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Question # 8
Every identity matrix is
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Row-vector
Scalar
Column-vector
All
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Question # 9
Let A be a square matrix. Then, 1/2 (A-A') is
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Skew-symmetric
Symmetric
Null
None of the above
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Question # 10
A = [3] is a/an
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Square matrix
Scalar matrix
Diagonal matrix
Identity matrix
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Question # 11
Matrix multiplication is
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Commutative
Not commutative
Not associative
Not distributive
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Question # 12
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Question # 13
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0
1
2
3
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Question # 14
The order of the matrix A is 3 x 5 and that of B is 2 x 3.The order of the matrix BA is
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2 x 3
3 x 2
2 x 5
5 x 2
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Question # 15
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Orthogonal
Involutary
Idempotent
Nilpotent
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Question # 16
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3 x 1
1 x 3
3 x 3
1 x 1
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Question # 17
If A is singular then |A| = ______
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1
0
2
None of these
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Question # 18
The square matrix A is skew-symmetric when At =
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-B
-C
-A
-D
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Question # 19
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x =0, y =4
x = -1, y = 2
x = 2, y = 3
x = 3, y = 4
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Question # 20
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Question # 21
A square matrix all of whose elements except the main diagonal are zeros is called a
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Null matrix
Singular matrix
Symmetric matrix
Diagonal matrix
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