If you have Bharat Gas connection and want to check the status of your AADHAR card either linked or not, then you can check with this link.
On this link, you need to enter your AADHAR details or Bharat Gas Consumer Number.
You can also select your agency by choosing state/district.
Link your AADHAR to bank as well as to gas agency for getting the gas subsidy in the bank.
Here is the website for checking the AADHAR status