How Acid rain is formed equations?Formation of acid rain:Sulphur dioxide accounts for most of the acid rain problems. (a) When sulphur dioxide dissolves in water, sulphurous acid is formed. SO2(g) + H2O(l) → H2SO3(aq) (b) Sulphur dioxide can react with …

What are the properties of a pure metal?Pure Metals: Typical pure metals have the following physical properties:Ductile- can be drawn into fine wireMalleable- can be beaten into thin sheets without crackingLustrous- becomes shiny when polishedHigh densit…

What are Metallic and Nonmetallic Properties   Metals generally show less electronegative character. In compounds, they generally show a tendency to remain as positive ions. This property is often termed as electropositive character. Metals are electrop…

Which acid is used for coagulating rubber from latex?Coagulation process of latex: The milky fluid obtained from tapped rubber trees is called latex.It consists of an aqueous suspension of colloidal rubber particles.Each rubber particle is made up of rub…

What is meant by the calorific value of a fuel?Fuels are substances that can normally burn readily in air or oxygen to produce large quantity of heat.Examples of some common fuels are petroleum, natural gas and coal. These are called fossil fuels.Differ…

Classification Of Pure SubstancesChemical substances are made of atoms and molecules. An atom is the smallest particle of a substance. Atoms may or may not exist independently. Molecules are formed when two or more atoms join together. Molecules can exi…

Classification of SolutionsSolutions are of Three types.     True SolutionsSuspensionColloids1. True Solutions : A solution is a homogeneous mixture of two or more pure substances. A solution is made up of two parts i.e., a solute and a solvent. Usually …

Concept of the pH ScaleThe pH Scale :A litmus solution or litmus paper can be used to determine whether a given solution is acidic or basic. But suppose you have two acidic solutions containing different amounts of acids in them. How can you say which so…

Role of pH in everyday lifeRole of pH in everyday life : pH plays a very important role in our everyday life. 1. In our digestive system : Hydrochloric acid produced in our stomach helps the digestion of food without causing any harm to the stomach. But…

What is the pH of a salt solutionpH of Salts : The aqueous solutions of all kinds of salts do not have the same pH value. What is the ph of a NaCl solution:(i)   Salts of strong acids and strong bases : Sodium chloride (NaCl), potassium nitrate (KNO3), …