advantages of chemistry

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,..

1) More efficient than conventional cells because the energy of the fuel is converted directly into electric energy. Efficiency = 60-70%. 2) They are free from polluti..

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..

a) It prevents the back suction of water into the apparatus. b) It provides a larger surface area for dissolution of hydrogen chloride g..

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..

High calorific value Clean fuel No residue produced No smoke produced Non polluting Economical Can be supplied through pipe lines Burns readily - has a convenient ignition temperatur..

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..

The study of organic compounds becomes easier with the knowledge of homologous series. The study of a vast number of organic compounds become restricted to the study of a few series of homologue..

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..

a) It gives a general idea about the ability of a solute to dissolve in water, at different temperatures. b) The solubility of the solute at any temperature, between the given lowest and highest temperatures, can be more or less accurately read. c) The mass of crystals deposited, when a saturated s..