advantages of chemistry in socoety

They give better thrust than solid propellants By propellant flow regulation, thrust can be controlled A mixture of liquid oxygen and liquid hydrogen is one of the most important liquid propellants. Oxygen burns liquid hydrogen to produce heat energy. Liquid propellant examples are alcohols,..

High calorific value Complete combustion: No residue No smoke No pollutants Burns readily, preheating not required. This is because it has a low ignition temperature..

The advantages of distillation under reduced pressure are: The compounds that decompose on heating to their boiling points can be purified by distillation under reduced pressure. This is because at the reduced pressure, a liquid would boil at a temperature much below its normal boiling..

Reduces burden on forests and fossil fuels Produces a clean fuel - helps in controlling air pollution Provides nutrient rich (N & P) manure for plants Controls water pollution by decomposing sewage, animal dung and human excreta..

1. It is economical since there is no wastage of sulphur. 2. Sulphur of 99.5% purity is obtained. Thus it need not be further purified. 3. The process is simple and cost effective. 4. The process is continuous and does not requite rebuilding of structur..

Soaps are not suitable when hard water is used. Detergents can be used with both hard and soft water. Detergents are more soluble in water than soaps. They also have a stronger cleansing action than soaps. Detergents don't need expensive vegetable oil for their preparation as they can be prepared ..

Sodium metal obtained has high degree of purity (99.5%). The starting material, sodium chloride is very cheap. Chlorine is obtained as a useful by-product..

Advantages of Long form Periodic Table - 1. The classification of elements is based on the atomic number, which is a more fundamental property. 2. The reason for placing isotopes at one place is justified as the classification is on the basis of atomic number. 3. It explains the periodici..

1. The classification of elements is based on the atomic number, which is a more fundamental property. 2. The reason for placing isotopes at one place is justified as the classification is on the basis of atomic number. 3. It explains the periodicity of the properties of the elements and relates th..

Air as a Mixture - As we know that we cannot live without air even for a single minute. We live in a vast ocean of air, which extends upwards for over 1000 km. Apart from providing us air to breathe, this blanket of air traps the sun's heat that is essential for life on the earth, and also acts as ..