NID Design Aptitude Test (DAT) is a national-level entrance exam through which aspirants are shortlisted for admission to UG and PG Design courses offered by the prestigious National Institute of Design.

You can visit this website to download sample papers and previous year question papers of NID - https://design.careers360.com/articles/nid-dat-sample-papers

Here are the subjects you should study to clear the exam -

1. Design Outline for Begginers

2. Mood, Theme and Colour Inter-Relationship

3. Natural & Geometric Form

4. Lettering

5. Colour Psychology & Optical Illusions

6. Theme Developement

7. Visual Logic

8. Use of Measurements, Scale & Proportions

9. Memory Drawing

10. Exercises on Imagination

11. Presentation Techniques

12. Graphics & Pictograms

13. Developing Observation

14. Innovation & Creation

15. Imagination & Doodling

16. Lateral Thinking

17. Use of colour in compositions

18. Inspiration & Creativity

19. Optical Illusion

20. Good Design vs Bad Design

21. Creative Thinking & Writing

22. Form & Function

and others.