I got JEE Advanced air 7794 in Gen category so can I get any old IIT(B.Tech) and if so then branch changing is easier,moderate or tough

Candidates must be very careful in filling JEE Advanced application form as the correction facility is not provided post the last date of registration. It is thus advised that candidates verify all the details they fill in the form at least once and make the corrections before the last date to apply

If the PwD certificate is valid and issued by the competent authority, it will be considered for availing the reservation. However, it is advsied to get the UDID card before admission process.

Candidates with benchmark disabilities are eligible to avail scribe facility. For this, they have to first mark their PwBD status/category in application form. Candidates can bring their own scribe or can take the facility from the organizing institute. 

The procedure to apply for IIT JEE Adv includes four main steps

• Login through JEE Main application number and date of birth
• Fillling of required details
• Uploading documents 
• Payment of application fee

In case of failed JEE Advanced application fee payment, the money deited from account will be credited back to the account within 24-hours. In case the money is not recieved back, they can contact the JEE Adv official through email or phone.