Notes and Study material for Exams
Natural hazards in Nagaland Earthquake Nagaland has been hit by many disasters in the past. The most notable ones are the Great Shillong Earthquake on 12th June 1897 which measured 8.7 in the Richter scale and the Assam Tibet earthquake on 15th August 1950 which measured 8.5 in the Richter scale. However, since those days … Read more
Geological Disasters Earthquake:- Based on tectonic features and records of past Earthquakes, a seismic zoning map of India has been prepared by a committee of experts under the auspices of Bureau of Indian Standard. In this seismic zoning map, most of the area of Punjab State lies in Zone III and IV. However, northern boundary … Read more
The State of Punjab suffers mainly from two natural hazards, namely, flood and Earthquakes, of which floods have quite a high frequency of occurrence, whereas earthquakes of M > 5.0 have a moderate frequency within and close to the boundary of the State. Theoretically risk is said to be the product of hazard and vulnerability … Read more
Metallurgy 2 Roasting It is a process wherein the Ore is heated either alone or with some other material in excess of air below the fusion point of the ore. Usually, this method is used for sulphide ores. In roasting, definite chemical changes take place to form oxide or chloride of the Metal. Ores of … Read more
Metallurgy Metallurgy is the process of obtaining metals from ores. It may be defined as the processes which are involved in the extraction of metals from their ores and then refining them for use are known as metallurgy. Steps of Metallurgy: Metals can be extracted from their ores by following processes: Enrichment of Ore or Concentration of … Read more
Gujarat: Natural Hazards and Disaster Management The state of Gujarat has been facing the most overwhelming natural disasters in the last decade. These natural disasters have not just caused colossal destruction but have also paused a stop to various development programmes. The unique geo-physical setting of the state makes this region highly vulnerable … Read more
Natural hazards and other related aspects of Telangana The natural disasters directly impact economies, agriculture, Food Security, water, sanitation, the Environment and Health each year. Therefore it is one of the single largest concerns for most of the developing nations. Different natural hazards because varying levels of physical damage to Cyclones cause extensive whereas damage to … Read more
Properties of polythylene Polyethylene is a thermoplastic polymer with variable crystalline structure and an extremely large range of applications depending on the particular type. It is one of the most widely produced plastics in the world (tens of millions of tons are produced worldwide each year). The commercial process (the Ziegler-Natta catalysts) that made PE … Read more
Properties of teflon Polytetrafluoroethylene or PTFE (more commonly known as Teflon) is a particularly versatile ivory-white and opaque plastic fluoropolymer; it is made by the free-radical polymerisation of many tetrafluoroethene Molecules, and is suitable for a wide range of applications in industries as diverse as aerospace, the food and drink Industry, pharmaceuticals and telecoms. Produced by … Read more
Refining of ores Metallurgy Metallurgy Metallurgy is the process of obtaining metals from ores. It may be defined as the processes which are involved in the extraction of metals from their ores and then refining them for use are known as metallurgy. Steps of Metallurgy: Metals can be extracted from their ores by following processes: Enrichment of … Read more