No, you cannot type your answers in Hindi Language.
Answers Mode support 2 languages for 2 different sections.
1. English –  Answersmode.com
2. Bangla –  Answersmode.com/bn

So if you want to ask your questions in English then go here – https://www.answersmode.com
and if you want to ask your questions in Bangla then go here – https://www.answersmode.com/bn
Thanks for the question.