Notes and Study material for Exams
Acid An acid is a substance which forms H+ ions as the only positive ion in aqueous solution. Examples:- Hydrochloric acid dissolved in water forms H+ and Cl– ions HCl —> H+ + Cl– Sulphuric acid dissolved in water forms H+ and SO42- ions H2SO4 —>2H+ + SO42- Nitric acid forms H+ and NO3– ions when dissolved in water … Read more
Soap – Characteristics And Uses Soaps are excellent cleansing agents and have good biodegradability. A serious drawback which reduces their general use, is the tendency for the carboxylate ion to react with Ca+ and Mg+ ions in hard water. The result is a water insoluble salt which can be deposited on clothes and other surfaces. These … Read more
Arts Art is a broad term that encompasses a wide range of human activities and creations. It can be defined as the expression or application of human creative skill and imagination, typically in a visual form such as painting or sculpture, producing works to be appreciated primarily for their beauty or emotional power. Art has … Read more
Embroidery Crafts Embroidery is the art of decorating fabric or other materials with needle and thread. It is one of the oldest and most popular forms of needlework, and has been practiced for centuries by people all over the world. Embroidery can be used to create a wide variety of designs, from simple geometric patterns … Read more