Unacademy for UPSC

Hey Guys, What’s up? Let’s study about Volcanoes and its landform today.  Ø   Volcanoes – a place where gases, ashes and/or molten rock...

Hey Guys, today we will study about Types of Rocks. Ø   98% earth’s crust composed of 8 elements – Oxygen, Silicon, Aluminium, iron,...