Maths MCQ practice
This is a comprehensive mock test based on the CBSE Class 12 Mathematics syllabus and the structure of the papers you provided. Since you are teaching grades 10-12 and preparing for KVS/NVS exams, these are designed to match that "Board Level" difficulty. CBSE Class 12 Math: Mock Section A Time: 60 Minutes | Marks: 30 Multiple Choice Questions (1 Mark Each) 1. Let R be a relation on the set L of all lines in a plane defined by R = \{(L_1, L_2) : L_1 \perp L_2\}. Then R is: (A) Reflexive (B) Symmetric (C) Transitive (D) Equivalence 2. The principal value of \cos^{-1}\left(\cos \frac{7\pi}{6}\right) is: (A) \frac{7\pi}{6} (B) \frac{5\pi}{6} (C) \frac{\pi}{6} (D) \frac{-\pi}{6} 3. If A is a square matrix such that A^2 = A, then (I + A)^3 - 7A is equal to: (A) A (B) I - A (C) I (D) 3A 4. If A = \begin{bmatrix} \alpha & 0 \\ 1 & 1 \end{bmatrix} and B = \begin{bmatrix} 1 & 0 \\ 5 & 1 \end{bmatrix}, then value of \alpha for which A^2 = B is: (A) 1 (B) -1 (C) 4 (D) ...