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Mixed Worksheet for Matrices Class 12

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Sample questions

1. Question 1 [1 mark]
CBSE Board Exam 2026
If \(\mathrm{A}^{2}=4 \mathrm{~A}+3 \mathrm{I}\) and \(\mathrm{A}^{-1}=\mathrm{xA}+\mathrm{yI}\), then the value of \((\mathrm{x}+\mathrm{y})\) is :
(A)
-1
(B)
1
(C)
\(\frac{5}{3}\)
(D)
7
2. Question 2 [1 mark]
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.
(A)
Both A and R are true, and R is the correct explanation of A.
(B)
Both A and R are true, but R is not the correct explanation of A.
(C)
A is true, but R is false.
(D)
A is false, but R is true.
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About this Mixed Worksheet

This mixed worksheet is designed for Class 12 Maths practice from Matrices Class 12. It uses the question types selected for this worksheet and keeps the preview representative of the complete set.

Solve the questions first, then use the separate answer key to check the method and identify concepts that need revision. For more practice, continue with the chapter quiz or another worksheet below.

Frequently asked questions

How many questions are in this mixed worksheet?

The complete worksheet contains 10 questions. This page shows a fixed preview of 2 questions.

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Yes. The complete download includes a questions PDF and a separate answer key PDF.

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How should I use this mixed worksheet?

Attempt the questions without the answer key, check each solution afterwards, and revise the linked chapter concepts before trying another worksheet or quiz.