Yes, you can attempt SSC CHSL Exam mock tests with a timer. Here's how you can do it:

1. Prepare the Mock Test:
- Find a reliable source for SSC CHSL mock tests. EduRev is a great platform for this purpose.
- Choose a mock test that is specifically designed for the SSC CHSL exam.
- Make sure the mock test covers all the sections and topics of the actual exam.
- Ensure that the mock test provides a timer feature.

2. Set the Timer:
- Before starting the mock test, set a timer based on the actual exam duration. For SSC CHSL, the exam duration is usually 60 minutes for Tier 1 and 15 minutes for Tier 2.
- Use a countdown timer or stopwatch on your phone or computer. Alternatively, you can use an online timer available on various websites.

3. Focus on Time Management:
- Start the mock test and begin answering the questions.
- Be mindful of the timer and allocate a specific time limit for each section or question.
- If you get stuck on a difficult question, move on to the next one and come back to it later if you have time.
- Avoid spending too much time on a single question as it may compromise your performance in other sections.

4. Analyze Your Performance:
- Once the timer runs out, stop attempting the mock test.
- Review your answers and check how many questions you were able to answer within the time limit.
- Analyze the questions you found challenging or time-consuming and identify areas where you need improvement.
- Take note of the time you spent on each section and evaluate if you need to adjust your time allocation strategy for future mock tests.

Benefits of Attempting Mock Tests with a Timer:
- Enhances time management skills, which is crucial for scoring well in the actual SSC CHSL exam.
- Helps in getting accustomed to the time pressure and exam environment.
- Provides a realistic simulation of the actual exam, allowing you to assess your performance accurately.
- Enables you to identify areas of weakness and work on improving them before the actual exam.
- Builds confidence by familiarizing you with the exam pattern and question types.

Remember, regular practice of mock tests with a timer can significantly improve your chances of success in the SSC CHSL exam.