Hello!

The best books I can suggest are:

• Quantitative Aptitude - R.S. Aggrawal
• Verbal and Non Verbal Reasoning - R.S. Aggrawal
• NCERT General Studies - Mc Graw Hill Education, Sheelwant Singh
• General Knowledge - Lucent
• General Awareness - Read Newspapers daily 

It is also suggested to practice online mock tests available on apps and websites.

Thank You

Reply for any more doubts