All the aspirants must pay attention to the Indian history section because every year many questions are asked about this sub-topic. While there are tons of books to cover Indian history, here are some of the selected ones:
India’s Ancient Past by RS Sharma
History of Medieval India by Satish Chandra
History of Modern India by Bipan Chandra
India’s Struggle For Independence by Bipan Chandra
Indian Art and Culture by Nitin Singhania
India After Independence: Bipan Chandra