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ECAT Pre General Science Mathematics Chapter 5 Matrics and Determinants Online Test MCQs With Answers
Question # 1
The matrix A = [aij]1xn is a
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Vector
Rectangular matrix
Column vector
Square matrix
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Question # 2
Rank of matrix [1 3 5 0] is
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1
3
2
4
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Question # 3
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Question # 4
Matrices A = [aij] 2 x 3 and B =[bij] 3 x 2 are suitable for
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BA
A
2
AB
B
2
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Question # 5
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2 x 2
2 x 3
3 x 2
3 x 3
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Question # 6
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0
Independent of a
Independent of b
Independent of c
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Question # 7
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0
1
-A
-1
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Question # 8
If A is a skew-symmetric matrix of order n and P, any square matrix of order n.prove that P' AP is
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Skew-symmetric
Symmetric
Null
Diagonal
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Question # 9
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Question # 10
For a square matrix A, if A = At, then A is called
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Matrix
Transpose
Symmetric
Non-symmetric
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Question # 11
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Question # 12
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Question # 13
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Question # 14
The number of non zero rows in echelon form of a matrix is called
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Order of matrix
Rank of matrix
Row operation
None of these
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Question # 15
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A
2
- 5A + 7I = 1
2A
2
- 3A + 7I = 0
A
2
- 5A + I = 0
A
2
- 5A + 7I = 0
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Question # 16
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4A - 3I
3A - 4I
A - I
None of these
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Question # 17
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Identity matrix
Diagonal matrix
Null matrix
Hermitian matrix
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Question # 18
(ABC)' =
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CBA'
CBA
C'B'A
C'B'A'
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Question # 19
The additive inverse of a matrix A is
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None of these
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Question # 20
System of linear equation is inconsistent if
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System has no solution
System has one solution
System has two solution
None of above
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Question # 21
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Diagonal matrix
Scalar matrix
Triangular matrix
Identity matrix
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