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Corrosive Substances : These substances cause severe damage by chemical action when in contact with living tissue or in case of leakage, destroy /damage other materials. Mineral acids like hydrochloric acid and sulphuric acid, sodium hydroxide belong to this class.
Determine how ion exchange data is helpful The ion exchange data is helpful · in soil management, · indicating nutrient storage capacity of soil, · prediction of s
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Theories of evolution of man Towards the beginning of the nineteenth century, scientists had already started doubting the theory of special creation and various attempts were
laboratory apparatus for separating mixture
The effect of soil on growing things Get samples of a fertile soil from a flower or vegetable garden, from a wood, from a place where a cellar is life form dug, from a sandy pl
A lamp chimney lift pump Use a straight-sided lamp chimney as a pump cylinder. Fit a two-hole stopper into the chimney for a piston. If the stopper is a little small wrap some
Fire extinguishers You would recall the classification of fires dealt. Table summaries the type of extinguisher used for different classes of fire. Table: Summary of fire e
Accidents in laboratories, by and large, occur due to unsafe work practice. The accidents may result in harm to someone and/or damage to equipment and premises. In this unit, we ha
What is tocopherols Vitamin E refers to a group of compounds known as which are the derivatives of a parent compound called as 'tocol'. Four tocopherols namely a, P,
why do we get shock when we touch an open wire?
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