For admission to courses like B.Tech, institutes usually require you to ensure that you are a resident of the state you are applying for. Your Aadhaar card is proof of your residence, so if your address is Bareilly, Uttar Pradesh, you may need to update it to prove that you are a resident of Uttarakhand.

Usually, educational institutions require a valid document as proof of your current address. If your Aadhaar card reflects your current address, it will be a valid document. If it does not reflect your current address, you will need to update it.

You can update the address in your Aadhaar card online or offline. To update online, you can visit the UIDAI website and submit the required details and documents. To update offline, you have to visit your nearest Aadhaar enrolment centre.

Hope it helps!!