Scholarships from the National Scholarship Portal (NSP) typically have specific eligibility criteria and durations. Whether you can receive a scholarship for an extra year due to backlogs depends on the scholarship's terms and conditions. Here are some steps to follow:

1. Review Guidelines : Check the specific scholarship guidelines on the NSP portal to see if they mention extensions or provisions for additional years due to backlogs.
2. Contact Authorities : Reach out to the NSP support or your institution’s scholarship office for clarification.
3. Documentation : Be prepared to provide documentation explaining your situation and need for an extra year.

Some scholarships may allow for extensions under special circumstances, but this varies by program.

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The eligibility criteria for scholarships on the National Scholarship Portal (NSP) can vary depending on the specific scheme you're interested in.

There are numerous scholarship schemes available through the NSP. Each scheme has its own eligibility criteria, including duration of study.

Look for scholarships specifically designed for students pursuing technical courses like BTech/BE in IITs. Some examples include:

• Central Sector Scholarship Scheme for College and University Students
• Scholarships for Students from North Eastern Region
• Merit Cum Means Scholarship Scheme for Professional and Technical Courses (MHRD)

• Some scholarship schemes allow renewal for an extra year if the student has backlogs and needs additional time to complete the course.
• Look for information about renewal options within the specific scholarship scheme details on the NSP website.

If you are unsure about the eligibility for an extra year in your specific case, consider contacting the NSP Helpdesk. You can find their contact information (phone number and email address) on the NSP website.

• If NSP scholarships aren't an option for your extra year, explore other scholarship opportunities offered directly by IITs or external organizations.
  
  
• Check the financial aid section on the website of your specific IIT for scholarships or grants available for students in your situation.
  
  
  https://school.careers360.com/articles/national-scholarship-portal-registration
  
  I hope it helps!