2. Never use 2 languages, i.e. either English or Hindi
3. Emphasize on diagrams rather than pure text.
4. Try to write in headings.
5. Use table format for questions asking distinction between two things.
6. Write in a neat and clean way.
7. Break para every 7/10 lines.
8. Highlight the main word or sentence with underline or colored marker.
9. Use media quotations to support your answer, you can find them at http://aryasir.blogspot.com/2008/12/quotations-on-media.html
10.Put the same question number on answer sheet which is on question paper.
11. Remember one thing, you answers would be compared with the other candidates so don't try to fool the examiner.
12. Always portray a positive or optimistic viewpoint in your answers.
The above points apply in an equally good way to all examinations. Best Wishes