NCERT one for all UPSC and state PSC's :  General science  
 Union Public Service Commission 

 - Agra:  Oswaal Books,  2025. 
 - 360p.;  24 cm. 
<br/><br/><label>ISBN: </label>9789357286947 
<br/><br/><label>Subjects--Topical Terms: </label><br/>General Science
<br/><br/><label>Dewey Class. No.: </label>351.076  / UPS