The use of a table (specifically, a mathematical table for trigonometric values, logarithms, etc.) for CBSE SA2 (Summative Assessment 2) Maths board exams
depends on the specific instructions given in the exam paper and the class level.
There's no blanket yes or no answer. Some exams might explicitly allow it, while others might not. Always check the instructions printed on the question paper itself. If in doubt, ask the invigilator.