SOAP PREPARATION BY SAPONIFICATION
Soap is a substance that is commonly used for cleaning and is made from the reaction of a fatty acid with an alkali. The chemical equation for the formation of soap can be written...
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EVOLUTION OF NEW SPECIES BY MUTATION AND ISOLATION
A) Mutation theory of organic evolution Mutation is a change in genetic material resulting in a new stable characteristic which can be inherited by offspring. Hugo De Vries, a Dutch botanist propounded the mutation...
TRANSPORT BY AIR
Transport by air is the system of moving goods and passengers through the air by aeroplanes, helicopters etc. Air transport is very fast and comfortable but it is expensive. Air transport has contributed greatly...
TRANSPORT BY PIPELINE
Transport by pipeline is a system of transporting gasses and liquid products from one place to another through the use of pipelines. Pipelines are constructed or laid underground as means of carrying water, gases...
TRANSPORT BY LAND
Transport by land is the means of conveying goods and passengers from one place to another through land. This means of transportation is very good for trading within a country, i.e ., home trade....