To effectively use online MCQ tests for NTPC exam preparation, start by choosing reliable platforms that offer well-structured mock tests aligned with the NTPC syllabus. Regularly taking these tests helps assess your knowledge and identify weak areas. Focus on time management during the tests, as the NTPC exam is time-bound, and practice improves your speed and accuracy. After each test, thoroughly review your performance, noting incorrect answers and understanding the reasons behind them. Re-attempt similar questions to solidify concepts. Additionally, focus on practicing a diverse range of questions, covering different topics like General Awareness, Mathematics, Reasoning, and Current Affairs, to ensure comprehensive preparation. Set aside time for daily or weekly mock tests, integrating them with your study plan. Using online MCQ tests effectively will boost your confidence, familiarize you with the exam pattern, and enhance your overall preparation for the NTPC exam.