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ECAT Pre General Science Mathematics Chapter 5 Matrics and Determinants Online Test MCQs With Answers
Question # 1
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Question # 2
Which of the following is skew symmetric matrix
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Question # 3
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1
0
3
-1
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Question # 4
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a = 4, b = 1
a = 1, b = -4
a = 0, b = 4
a = 2, b = 4
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Question # 5
The transpose of a zero matrix is a ______
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Column matrix
Zero matrix
Row matrix
Scalar matrix
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Question # 6
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Question # 7
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2
4
6
8
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Question # 8
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Diagonal matrix
Scalar matrix
Triangular matrix
Identity matrix
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Question # 9
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 # 10
A = [3] is a/an
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Square matrix
Scalar matrix
Diagonal matrix
Identity matrix
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Question # 11
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Diagonal matrix
Scalar matrix
Triangular matrix
Identity matrix
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Question # 12
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A
-A
A
t
A
-
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Question # 13
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0
1
2
3
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Question # 14
For any positive integer n
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ABn = Bn A ⇔ AB = BA
ABn = Bn A⇔ A,B are square matrices and AB = BA
ABn = BnA⇔ A + B
ABn = BnA ⇔ A and B are square matries
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Question # 15
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Question # 16
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2 x 2
2 x 3
3 x 2
3 x 3
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Question # 17
An equation of the form ax + by = k is homogeneous linear equation when
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b = 0, a = 0
a = 0,b ≠0
b = -0,a≠0
a≠0,b≠0, k = 0
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Question # 18
If there are m rows and n columns in a matrix then its order is
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m x n
m x m
n x n
n x m
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Question # 19
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3 x 1
1 x 3
3 x 3
1 x 1
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Question # 20
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Question # 21
If A is singular then |A| = ______
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1
0
2
None of these
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Question # 22
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Question # 23
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 # 24
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Question # 25
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 # 26
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 # 27
A square matrix A for which A
t
= A is called a
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Column matrix
Symmetric matrix
Skew-symmetric matrix
Row matrix
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Question # 28
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Question # 29
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 # 30
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Zero matrix
Diagonal matrix
Column matrix
Scalar matrix
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