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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.
Use of natural resources: you studied about various natural resources such as land, water, soil, minerals etc. You know that these resources are limited and precious. Therefore
Define age related changes in Nervous system Varying degrees of atrophy in neuronal areas can be observed neurotransmitter functions are hampered. The cholinergic deficits seen
Temperature variations in glacial regions In glacial regions of the world or during forest fires the rocks are exposed to extreme temperatures. Since the conduction of heat is
Oxidation Weathering by oxidation is common in rocks which are rich in the elements that can be easily oxidised e.g. iron. Iron as Fe 2+ present in a mineral is oxidised to Fe
factors which decide the broad area of Scientific activity
State the meaning of Low tensile strength Low tensile strength and chances of consequent cracking and deterioration of load bearing capacity of structural components, we wis
Q. Do you know of any activity which may be polluting this water source? Answer: The discharge of waste water from homes, industries, hospitals, etc. into the river pollutes thi
RADIATION HAZARDS : We are sure that you would have studied about electromagnetic radiation during your studies at the school. You would recall that in electromagnetic radiatio
Technology forecasting: With such power of science in relation to technology, and consequently to satisfy social need, the question arises, can technologies of the future be fo
It is estimated that the temperature of the Earths core is: as hot as the surface of the sun
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