Teachoo Quiz

Short Quiz

Chapter 3 Class 12 Matrices | 5 questions | about 4 minutes

Attempt time 0:00
This question 0:00
Question 1 of 5
Advertisement
Question 1 of 5
CBSE Board Exam 2025
Assertion (A) : A=diag [ \(\begin{array}{lll}3 & 5 & 2\end{array}\) is a scalar matrix of order \(3 \times 3\).
Reason (R) : If a diagonal matrix has all non-zero elements equal, it is known as a scalar matrix.
Select an option to see the answer, or skip this question.
Question 2 of 5
CBSE Board Exam 2024
For any square matrix A , (A \(-\mathrm{A}^{\prime}\) ) is always
Select an option to see the answer, or skip this question.
Question 3 of 5
CBSE Board Exam 2025
If A and B are square matrices of order m such that \(\mathrm{A}^2-\mathrm{B}^2=(\mathrm{A}-\mathrm{B})(\mathrm{A}+\mathrm{B})\), then which of the following is always correct?
Select an option to see the answer, or skip this question.
Question 4 of 5
CBSE Board Exam 2024
If \(A=\left[a_{i j}\right]\) is an identity matrix, then which of the following is true ?
Select an option to see the answer, or skip this question.
Question 5 of 5
CBSE Board Exam 2026
If a matrix B is such that \(\mathrm{B}\left[\begin{array}{lll}1 & 2 & 3\end{array}\right]=\left[\begin{array}{lll}1 & 2 & 3 \\ 0 & 1 & 1 \\ 2 & 0 & 1\end{array}\right]\), then the order of matrix B is :
Select an option to see the answer, or skip this question.
Stuck? Keep your progress moving.