Hi Abhinay

As National Talent Search Examination (NTSE) is conducted by National Council of Education Research and Training (NCERT) , so you should have good command over NCERT book of Social Science. Some smart tips are provided below for preparation of NTSE especially section of Social Science :-

• Categorize the chapters according to the difficulty level.
• Make proper schedule which balances your studies and daily routine work.
• Solve previous year papers and sample papers as many as you can.
• You can make a chart of important dates and events and see it regularly si that you should not forget it.
• Make yourself fit and stay healthy.

For more detailed preparation tips you should read this article .

Good Luck!!