1. Familiarize Yourself with the Exam Pattern:
- Understand the structure of the exam, including the number of questions, marks allotted, and time duration.
- This will help you plan your time accordingly and prioritize sections or questions.

2. Make a Time Allocation Plan:
- Divide the total time available by the number of questions to determine how much time to spend on each question.
- Allocate more time to questions that carry more marks or require more in-depth answers.

3. Read the Instructions Carefully:
- Before starting the exam, read through the instructions provided for each question.
- This will help you understand the requirements and save time by avoiding errors or unnecessary details.

4. Skim through the Entire Paper:
- Quickly go through the entire question paper to get an overview of the topics and difficulty level.
- Identify questions you are more confident about and those that require more time or effort.

5. Start with Easy Questions:
- Begin with the questions you find easier and can answer quickly.
- This will boost your confidence and save time for more challenging questions later.

6. Manage Your Time within Each Question:
- Read each question carefully to understand what is being asked.
- Plan your answer and structure it before writing to avoid unnecessary revisions.
- Allocate a specific amount of time for each question and stick to it.

7. Prioritize Key Points and Examples:
- Focus on highlighting the key points in your answer.
- Use examples or illustrations to support your arguments or explanations.
- This will help you convey your understanding concisely and save time.

8. Avoid Overwriting:
- Be concise and to the point while answering questions.
- Avoid elaborating excessively or repeating information.
- This will save time and allow you to attempt more questions.

9. Keep an Eye on the Clock:
- Regularly check the time during the exam to ensure you are on track.
- If you find yourself spending too much time on a particular question, move on and come back to it later if time permits.

10. Review and Revise:
- Allocate the last few minutes of the exam for revising your answers.
- Check for any mistakes, improve clarity, and make necessary corrections.

By following these strategies, you can effectively manage your time during the exam for Paper I of UPSC Chemistry Optional subject, maximizing your chances of success.