Maharashtra HSC Improvement Exam

Yes you can give the improvement exam and take admission in B.Sc the same year 

No, you cannot give 12th HSC board improvement exam for 2-3 subjects even if you had passed in all subjects. You have to give exam of all the subjects.

Yes, you can appear HSC (Higher Secondary Certificate) improvement again in February if you are eligible for it and complete the procedure decided by the specific board.

HSC grouping is a crucial factor for NEET (National Eligibility cum Entrance Test).

There are some boards which allow students to go for an improvement exam if the student is not satisfied with the result.

No, you don't have to go for your practical exams, if you are appearing in class improvement exam. The improvement exams are conducted with the purpose of giving a chance to students for improving their marks in theory portion only. 

If you have passed the practical exams once, your marks will be considered the same in practical portion.

Yes, you can take the improvement exam next year for the HSC board even if you have failed in one subject during the July improvement but passed the main boards in February. Students are permitted by the Maharashtra Board to take the improvement exams for improving their marks. But because you have failed in one subject, you would also have to enroll for the supplementary exam of that particular subject. Make sure you confirm the registration dates and process with your school or on the Maharashtra Board website to act accordingly.