The Ningbo Science Experiment Exam, a highly competitive and prestigious examination in China, typically has a duration of 150 minutes. This duration is divided into two sections: the first section consists of multiple-choice questions, which usually takes about 90 minutes to complete, and the second section involves subjective questions that require students to demonstrate their analytical and problem-solving skills, taking up the remaining 60 minutes.

The exam's structure and duration are designed to assess a wide range of scientific knowledge and critical thinking abilities. The 150-minute time frame allows students to thoroughly understand the questions and demonstrate their understanding of the subject matter. According to a report by the Ningbo Education Bureau, the exam is designed to be challenging yet fair, ensuring that only the most qualified candidates are selected for further education and research opportunities.

Data from the Ningbo Education Bureau indicates that the exam's duration has remained consistent over the years, reflecting the importance of maintaining a balanced assessment of students' abilities. The exam's format and duration are carefully reviewed and updated periodically to ensure they remain relevant and effective in evaluating students' scientific aptitude. The consistent duration also helps students prepare for the exam by familiarizing themselves with the time management required to complete the questions accurately within the given time frame.