Notes and Study material for Exams
Sanitation and Water Disposal The seriousness of the challenges associated with urban Water supply and sanitation in India have been recognised in recent times. After decades of neglect, the first national effort to invest in the urban water and sanitation sector commenced in the 1970s, but was accorded considerable priority in the subsequent … Read more
Education has been accepted as one major agency of socialization, and teachers and educational institutions as socializing agents. In describing education as an instrument of Social Change, three things are important: the agents of change, the content of change, and the social background of those who are sought to be changed, i.e. students. Educational institutions … Read more
Technology with a Human Face Technology and the Human Race The human race has indeed gone far with technology. From the age when he still used wooden and stone tools to a powerful era of silicon and steel, he ceased to be a helpless prey to a number of predators to become a god among … Read more
Biotechnology through Genetic engineering has made Food Crops more resistant to disease, but the mere act of modification of the naturally selected food crops may actually disturb the delicate balance of
Sociology– Meaning, Scope and nature, Importance of its study. Relation with other Social Sciences Sociology is a discipline in social sciences concerned with the human Society and human social activities. It is one of the youngest social sciences. Auguste Comte, a French social thinker, is traditionally known as the ‘Father of Sociology’ as he coined … Read more
Endothermic Reactions Endothermic reactions are those chemical reactions where energy is absorbed by the system from the surroundings mostly in the form of heat. The concept is applied in the physical sciences like chemical reactions where hear is converted to chemical bond energy by way of experiments. Common examples of endothermic … Read more
Refraction of Light Refraction is the bending of light (it also happens with Sound, water and other waves) as it passes from one transparent substance into another. This bending by refraction makes it possible for us to have lenses, magnifying glasses, prisms and rainbows. Even our eyes depend upon this bending of light. … Read more