Subject and UNIT: Engineering Chemistry: Unit II: Nanochemistry Engineering Chemistry
Nanomaterials are composed of grains and grain boundaries. Nanometre sized grains contains only a few thousands of atoms with in each grain.
Subject and UNIT: Engineering Chemistry: Unit II: Nanochemistry Engineering Chemistry
The size of nano particles are less than 100 nm in diameter, molecules are in the range of picometers, but bulk materials are larger in micron size.
Subject and UNIT: Engineering Chemistry: Unit II: Nanochemistry Engineering Chemistry
The prefix (nano), in the word nanochemistry, means a billionth (1 × 10-9m). Atoms are very small and the diameter of a single atom can vary from 0.1 to 0.5 nm. It deals with various structures of matter having dimensions of the order of a billionth of meter.
Water and its Treatment | Engineering Chemistry
Subject and UNIT: Engineering Chemistry: Unit I: Water and its Treatment Engineering Chemistry
Engineering Chemistry : UNIT I : Water and its Treatment : Anna University Questions
Subject and UNIT: Engineering Chemistry: Unit I: Water and its Treatment Engineering Chemistry
The process of removing hardness producing salts from water is known as softening (or) conditioning of water.
Subject and UNIT: Engineering Chemistry: Unit I: Water and its Treatment Engineering Chemistry
The water fed into the boiler for the production of steam is called boiler feed water. Boiler feed water should be free from turbidity, oil, dissolved gases, alkali and hardness causing substances.
Grade, RO Process, Advantages
Subject and UNIT: Engineering Chemistry: Unit I: Water and its Treatment Engineering Chemistry
The process of removing common salt (sodium chloride) from the water is known as desalination.
Subject and UNIT: Engineering Chemistry: Unit I: Water and its Treatment Engineering Chemistry
Rivers and lakes are the most common sources of water used by municipalities. These water should be free from colloidal impurities, domestic sewages, industrial effluents and disease producing bacterias. Hence domestic supply of water involves the following stages in the purification processes.
Subject and UNIT: Engineering Chemistry: Unit I: Water and its Treatment Engineering Chemistry
The quality of water is a very important parameter to be determined in order to decide the type of application or treatment required. The quality of water varies to place to place and seasons.
Subject and UNIT: Engineering Chemistry: Unit I: Water and its Treatment Engineering Chemistry
Water is the most important compound for the existence of human beings, animals and plants. About 80% of the earth's surface is occupied by water.