hello shristi,

from below links you can have the syllabus,exam pattern and eligibility, tips needed for your preparation. both exams will test you from fundamentals areas like,

for UCEED

• visualization and spatial ability
• social awareness
• observation and design sensitivity
• reasoning
• creativity and problem solving

for NID,

You should able to be clear on basics of product and graphics design and animation.

being neat and  fast sketcher can be a key factor .

LINKS:

• https://design.careers360.com/articles/uceed
• https://design.careers360.com/exams/nid-dat
• https://design.careers360.com/exams/uceed

I Hope this information will be useful to you.

if you need additional information,let us know to help you.

Thank you!!!:)