Treat each chapter's MCQ section as a mock test. Set a timer to build the speed required for the JEE.

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The deepest irony: A. Das Gupta’s problems are designed to be solved slowly, thoughtfully, with pen and paper. The “MCQ PDF + repack” mindset treats them as consumable items to be skimmed, searched, and answered quickly—often with answer keys memorized. This defeats the entire purpose. Students who hoard 20 repacked PDFs rarely finish one. The search for the perfect shortcut becomes the obstacle.