Notes and Study material for Exams
The Role of Polar Stratospheric Clouds in Ozone Depletion: A Catalyst for Chemical Reactions The Earth’s ozone layer, located in the stratosphere, plays a crucial role in protecting life on Earth from harmful ultraviolet (UV) radiation from the sun. However, this protective shield has been facing a significant threat from human-induced chemical reactions, leading to … Read more
Compounds are defined as substances composed of two or more different Elements that are chemically combined. Both salt and water are compounds. Some important chemical compound and their uses are as follows:- NaCl sodium chloride (table salt, used in solutions for contact lens) ZnO zinc oxide (used in some sunscreens and diaper rash ointment) NaF … Read more
Non Metals As far as Elements are concerned, a nonmetal is simply an element that does not display the properties of a Metal. It is not defined by what it is, but by what it is not. It doesn’t look metallic, can’t be drawn into a wire or pounded into shape or bent, doesn’t conduct … Read more