HELLO MOHAMMED

Ntse is the most prestigious scholarship exam conducted by NCERT.This exam is conducted all over in two stages

1. state level

2. national level

As you can see you will be competing with all over indian then in order to crack this exam you need to have right kind of resources.
so coming now to your question best book for social science.

since NCERT itself is conducting the exam the most obvious and recommended books are

For Social Science, i.e. History, Geography, and Civics, the following are the best books:

India and the Contemporary World 1 & 2 (NCERT)

Democratic Politics (NCERT Class 10)

Contemporary India (NCERT Class 9 & 10)

HOPE IT HELPS!!