Yes, 11th portion is covered in MHT CET only weightage is less as compare to 12th class.

According, to the new changes MHT CET level is raised to JEE Main ad there will be no negative marking as well.

In order to score good marks in your exam make sure you read your text book throughly. You can also refer books by Arihant, Marvel and Target publication.

Solving mock test series is very important for your practice and to know your strength and weakness. So, you can work upon them.

All the best for your preparation and exam!!