This topic from General Science and contain the complete detail about the topic.. 
 
Class 1 - Scientific Knowledge & Scientific Temper | TNPSC Unit 1-General Science |Free online Class
VIDEO CLASS - https://youtu.be/tN7ncsGC7_g
PDF - https://www.supersmart2k19.com/product-page/1-scientific-knowledge-and-scientific-temper
BOOK - https://www.supersmart2k19.com/product-page/tnpsc-general-science-volume-1