Yes, there are relaxations and concessions in the cut-off marks for reserved category candidates in the NABARD Grade B Exam. The reserved categories include Scheduled Castes (SC), Scheduled Tribes (ST), Other Backward Classes (OBC), and Persons with Disabilities (PWD). These relaxations are provided to ensure equal opportunities for candidates from these categories and promote inclusivity in the selection process.

Relaxation in Age Limit:
- SC/ST candidates are eligible for a relaxation of 5 years in the upper age limit.
- OBC candidates are eligible for a relaxation of 3 years in the upper age limit.
- PWD candidates are eligible for a relaxation of 10 years in the upper age limit.

Relaxation in Educational Qualification:
- SC/ST candidates are eligible for a relaxation in the minimum educational qualification requirements.
- OBC candidates are eligible for a relaxation in the minimum educational qualification requirements.

Relaxation in Cut-off Marks:
- SC/ST candidates are eligible for a relaxation in the cut-off marks for both the preliminary and mains examination.
- OBC candidates are eligible for a relaxation in the cut-off marks for both the preliminary and mains examination.

Reservation of Vacancies:
- A certain percentage of vacancies are reserved for candidates from the SC, ST, OBC, and PWD categories as per the government norms.

Concessions for PWD candidates:
- PWD candidates are eligible for certain concessions in the examination process, such as extra time, scribe/reader assistance, and use of a compensatory tool or assistive device as per their requirement.

It is important to note that these relaxations and concessions are subject to the guidelines and policies set by the NABARD and the government. Candidates belonging to the reserved categories should carefully review the official notification and guidelines to understand the specific relaxations and concessions applicable to them in the NABARD Grade B Exam.