Air Pollution: Air pollution means the spreading of harmful substances in the air. Such harmful or undesirable substances are called pollutants. Air pollution is generally referred to as the contamination of air that results from the activities of man. The burning of substances generally cause pollution. All fuels contain carbon which on burning in air
Constituents Of Air And Their Uses: Air is invisible to the eye because it contains colourless gases. The major constituents of dry air are nitrogen, oxygen, inert gases and carbon dioxide. Uses of Nitrogen (78.1%): Nitrogen dilutes the effect of oxygen. Oxygen supports burning and respiration. Nitrogen takes no part in burning. Any fire would
The Human Genome Project (HGP) was formally launched in October 1990 in the USA. The project was co-sponsored by the Department of Energy (DOE) and the National Institute of Health (NIH). It envisaged as the US $3 billion, 15 year-effort. The completion of the first draft sequence or map representing about 90 percent of the
DNA Fingerprinting- Process and Application: DNA fingerprinting was discovered by Sir Alec Jeffreys in 1985. DNA fingerprinting is a well-known method of identifying criminals by the means of their digital/palmer prints. DNA fingerprinting is a technique to find out variations in individuals of a population at the DNA level. DNA fingerprinting works on the principle
Disaster Management- Earthquakes, Floods, Landslides, Cyclones, Droughts: Geological processes like earthquakes, volcanoes, floods, and landslides are normal natural events which have resulted in the formation of the earth that we have today. They are, however, disastrous in their impacts when they affect human settlements. Human societies have witnessed a large number of such natural hazards
Central Teacher Eligibility Test: CTET December 2018 Question Paper with Answers [Paper- I Main] Which one of the following statements is true about the role of heredity and environment?(1) Certain aspects of development are influenced more by heredity and others more by environment.(2) A child’s ability to learn and perform is completely decided by the
UPSC CMS Solved Question Paper 2017 (Paper I): Which of the following is NOT correct?(a) Hepatitis A does not lead to massive hepatic necrosis(b) Hepatitis B vaccination is part of universal childhood vaccination(c) Hepatitis C is commonest cause of transfusion transmitted hepatitis(d) Hepatitis E carries very high mortality in pregnant women Ans: (a) Hepatitis A
Important Booklist for UPSC IAS Prelims in Hindi: History: Ancient and Medieval Indian History: India’s Ancient Past (भारत का प्राचीन इतिहास) by R.S Sharma. Medieval Indian History by Satish Chandra– Class 11th Old NCERT. Themes in Indian History- Part I: Chapters 1 to 6 The Harappan Civilisation. Early States And Economies. Early Societies. Cultural Developments.
Wildlife Protection Act, 1972- Provisions and Drawbacks: A number of steps have been taken by Indian government for the welfare and protection of wildlife. In 1952, the government of India constituted an advisory board, the Indian Board for Wildlife in 1952 to look after the country’s wildlife. Later it was named the Indian Board for
NCERT Political Science Books For IAS, SSC, And Other Exams- Both In English / Hindi: Class 6th NCERT Political Science: Social and Political Life-I Understanding Diversity. Understanding Diversity (Hindi). Diversity and Discrimination. Diversity and Discrimination (Hindi). What is Government? What is Government? (Hindi). Key Elements of a Democratic Government. Key Elements of a Democratic Government
