It is always recommended to visit the official UPSC website or refer to credible sources for the most accurate and up-to-date information. You can also refer to the EduRev website for guidance on UPSC Civil Service Exam preparation.

**Explanation in detail:**

1. Language choice during DAF submission:
- While filling the DAF, candidates are required to select a language for the interview process.
- The chosen language should be one of the languages mentioned in the 8th Schedule of the Constitution of India.
- The purpose is to ensure effective communication between the candidate and the interview board.

2. Changing the language after DAF submission:
- Generally, changing the language for the interview after the submission of the DAF is not allowed.
- This is because the interview board is assigned interviewers who are proficient in the language chosen by the candidate.
- Changing the language at a later stage may cause inconvenience and disrupt the interview process.

3. UPSC guidelines and updates:
- It is essential to refer to the official UPSC website or credible sources for the most accurate and up-to-date information regarding the Civil Service Exam.
- UPSC releases notifications and updates from time to time, and it is crucial to stay informed about any changes or modifications in the exam process.

Please note that the provided information is based on general guidelines and may be subject to change. It is advisable to refer to the official UPSC website or reliable sources for the most accurate and updated information regarding the UPSC Civil Service Exam 2020.

Yes you can, it is ammended after a PIL was filed by an IAS aspirant Chittaranjan Kumar...you have now freedom to give interview in the language preferred by you...best of luck

Read more at:
https://m.timesofindia.com/home/education/news/UPSC-aspirants-can-now-choose-Indian-languages-for-interview/articleshow/9194683.cms?utm_source=contentofinterest&utm_medium=text&utm_campaign=cppst