Matrices MCQs Class 12 Maths (NCERT Solutions)
Matrices MCQs Class 12 Maths (NCERT Solutions)
Class: CBSE Class 12 Mathematics
Subject: Mathematics
Section: Matrices
Topic: Matrices MCQs (NCERT Solutions)
Board: CBSE Board Examinations
Subject: Mathematics
Section: Matrices
Topic: Matrices MCQs (NCERT Solutions)
Board: CBSE Board Examinations
Instructions: These Multiple Choice Questions (MCQs) are designed strictly as per the NCERT syllabus, making them ideal for CBSE Class 12 Board Examination standard practice.
Q1. Order of matrix having 3 rows and 2 columns is:
Answer: B
Explanation: Order = rows × columns.
Explanation: Order = rows × columns.
Q2. A matrix with one row is called:
Answer: B
Explanation: Single row matrix definition.
Explanation: Single row matrix definition.
Q3. Matrix with all elements zero:
Answer: B
Explanation: Also called zero matrix.
Explanation: Also called zero matrix.
Q4. Identity matrix diagonal elements are:
Answer: B
Explanation: Ones on principal diagonal.
Explanation: Ones on principal diagonal.
Q5. If A+B defined, orders must be:
Answer: A
Explanation: Matrix addition requires same order.
Explanation: Matrix addition requires same order.
Q6. Scalar multiplication affects:
Answer: B
Explanation: Each element multiplied.
Explanation: Each element multiplied.
Q7. Transpose of matrix obtained by:
Answer: B
Explanation: Definition of transpose.
Explanation: Definition of transpose.
Q8. (Aᵀ)ᵀ =
Answer: A
Explanation: Double transpose returns original matrix.
Explanation: Double transpose returns original matrix.
Q9. Symmetric matrix satisfies:
Answer: A
Explanation: Definition of symmetric matrix.
Explanation: Definition of symmetric matrix.
Q10. Skew symmetric satisfies:
Answer: B
Explanation: Off‑diagonal elements opposite sign.
Explanation: Off‑diagonal elements opposite sign.
Q11. Diagonal matrix non‑diagonal elements:
Answer: B
Explanation: Only diagonal non‑zero.
Explanation: Only diagonal non‑zero.
Q12. Square matrix has:
Answer: A
Explanation: Equal rows & columns.
Explanation: Equal rows & columns.
Q13. A+A equals:
Answer: A
Explanation: Scalar multiplication property.
Explanation: Scalar multiplication property.
Q14. A−A =
Answer: B
Explanation: Additive inverse.
Explanation: Additive inverse.
Q15. Identity for multiplication:
Answer: A
Explanation: AI = IA = A.
Explanation: AI = IA = A.
Q16. Zero matrix multiplication gives:
Answer: C
Explanation: Null effect.
Explanation: Null effect.
Q17. If A symmetric & B symmetric then A+B:
Answer: A
Explanation: Sum preserves symmetry.
Explanation: Sum preserves symmetry.
Q18. If A skew symmetric, diagonal elements:
Answer: C
Explanation: From Aᵀ=−A.
Explanation: From Aᵀ=−A.
Q19. (A+B)ᵀ =
Answer: A
Explanation: Transpose distributive law.
Explanation: Transpose distributive law.
Q20. (kA)ᵀ =
Answer: A
Explanation: Scalar factor remains same.
Explanation: Scalar factor remains same.
