Questions
1. The matrix is an arrangement of numbers in _________
- [A] m rows & n columns
- [B] n rows & m columns
- [C] both A & B
- [D] none of the above
Answer: Option [A]
2. The rank of the given matrix 
- [A] 1
- [B] 2
- [C] 3
- [D] 0
Answer: Option [B]
3. If A is 
then ρ(A) is _________.
then ρ(A) is _________.
- [A] 0
- [B] 1
- [C] 2
- [D] 3
Answer: Option [C]
4. If A is a singular matrix |A| is _________.
- [A] 0
- [B] 1
- [C] any positive value.
- [D] any negative value.
Answer: Option [A]
5. If A, B are two matrices and K is a scalar then _________.
- [A] K(A+B) ≠ KA+KB
- [B] K(A+B) = KA+KB
- [C] K(A+B) < KA+KB.
- [D] K(A+B) > KA+KB.
Answer: Option [B]
6. If A,B and C are matrices the associative property is _________.
- [A] (AB)C < A(BC).
- [B] (AB)C > A(BC).
- [C] (AB)C ≠ A(BC).
- [D] (AB)C = A(BC).
Answer: Option [D]
7. If Aand B are matrices of same order then ___________.
- [A] A+B = B+A.
- [B] A+B ≠ B+A.
- [C] A+B < B+A.
- [D] A+B > B+A.
Answer: Option [A]
8. When the number of rows and the number of columns of a matrix are equal, the matrix
is _________.
- [A] square matrix .
- [B] row matrix
- [C] column matrix.
- [D] none of these.
Answer: Option [A]
9. A diagonal matrix in which all the diagonal elements are equal is a _________.
- [A] scalar matrix.
- [B] column matrix.
- [C] unit matrix.
- [D] None of these.
Answer: Option [A]
10. If there is only one column in a matrix, it is called _________.
- [A] Row matrix .
- [B] column matrix.
- [C] square matrix.
- [D] rectangular matrix.
Answer: Option [B]
11. If the number of rows of a matrix is greater than the number of columns then the matrix is
called as __________
- [A] a row matrix.
- [B] a column matrix.
- [C] a rectangular matrix.
- [D] a square matrix.
Answer: Option [C]
12. A square matrix A is an orthogonal matrix x, if ________
- [A] AA-1 = I
- [B] AA-1 = I
- [C] A = A-1
- [D] A = A-1
Answer: Option [B]
