how to study g.k for ssc chsl?

Follow these books for preparing GK section for SSC CHSL- 

General Studies (GS) Preparation:
Lucent's General Knowledge: This comprehensive book covers a wide array of topics, including history, geography, polity, economics, science, and more. It is a valuable resource for building your GS knowledge.
Manorama Yearbook: It is another excellent source of information for current events and general knowledge. It covers national and international affairs.
NCERT Books: For a solid foundation in GS topics, consider reading NCERT textbooks from class 6 to 10 for subjects like history, geography, economics, and polity.