There are many Indian Bitcoin exchanges in India but all of them require PAN or others documents to validate identity (Though Central Bank of India i.e. RBI has not given Bitcoin as a valid currency so the exchanges shouldn't ask for PAN Cards or other details but they still do.)

That's my other question, does these exchanges are authorized to ask for PAN Card or Other documents to verify identity since I am paying through my Debit Card or Bank Account so additional verification should not be necessary.

Does PAN Card or Identity verification is mandatory for buying Bitcoins from exchanges in India, since RBI doesn't issued any such notification?

The only notification by RBI related to Bitcoins that I am able to find is this.

There are many Bitcoin exchanges in India but all of them require PAN or others documents to validate identity. However, the Central Bank of India i.e. RBI has not given Bitcoin the status of a valid currency so the exchanges shouldn't ask for PAN Cards or other details but they do.

That's my other question, are these exchanges authorized to ask for PAN card or other documents to verify identity since I am paying through my debit card or bank cccount so additional verification should not be necessary.

Is PAN card or ID card verification mandatory for buying Bitcoin from exchanges in India, even through the RBI hasn't issued any such notification?

The is the only notification by the RBI related to Bitcoin I was able to find find: https://www.rbi.org.in/scripts/BS_PressReleaseDisplay.aspx?prid=30247