"The validity of improvement exams for government exams depends on the specific exam and conducting authority. Generally, improvement exams are valid for competitive exams like NEET, JEE, UPSC, and banking exams. However, for board exams and recruitment exams, there might be specific rules and restrictions.

If you've passed the improvement exam, you'll typically receive a new passing certificate with the improved marks. But it's essential to verify the certificate's validity for the specific government exam you're applying for and ensure that your original marksheets are updated with the improved marks.

To confirm the validity of improvement exams and passing certificates, always check the official exam notification, website, or contact the exam conducting authority directly."