Here's how the process generally works:
* Syllabus as the Foundation: The CBSE syllabus for Class 12 Economics is the primary document. It outlines the topics, concepts, and learning objectives students are expected to master.
* Textbook Resources: While no single book is the "official" source, several widely used textbooks align with the syllabus. These books serve as a reference point for the subject matter experts involved in question paper setting. Teachers and subject matter experts familiar with these books will contribute to the question bank.
* Subject Experts and Committees: A team of experienced Economics teachers and subject matter experts from various schools and institutions is involved in the question paper setting process. They carefully craft questions that test different levels of understanding (knowledge, comprehension, application, analysis, synthesis, evaluation).
* Blueprint and Weightage: A blueprint is prepared that specifies the number of questions, marks distribution, and topics to be covered from each unit within the syllabus. This ensures a balanced and comprehensive assessment.
* Question Bank: Over time, a large question bank is built up. This bank consists of questions from previous years' papers, sample papers, and newly designed questions by the expert committee. The final question paper is selected from this bank ensuring fair representation of all syllabus topics and cognitive levels.
* Review and Moderation: The drafted question papers undergo rigorous review and moderation by multiple subject experts to ensure accuracy, clarity, and adherence to the syllabus.
In short, the CBSE doesn't refer to *one* specific book. They use the syllabus as the guideline and draw upon a range of textbooks and resources commonly used in schools, relying on the expertise of a committee to create a fair and comprehensive examination. Students should focus on understanding the concepts outlined in the syllabus rather than trying to find one "magic book."