APSC Prelims and Mains Notes, APSC Test Series
Poona Pact of 1932 is an agreement between the untouchables or depressed classes of India and the Hindus. Dr. B.R.Ambedkar led the depressed class. The Poona Pact took place at Yerawada Jail in Pune, Maharashtra on 24th September, 1932.During the first Round Table Conference, Ambedkar favored the move of the British Government to provide separate … Read more
Defluoridation is the downward adjustment of the level of fluoride in drinking water. Worldwide, fluoride is one of the most abundant anions present in groundwater. Fluoride is more present in groundwater than surface water mainly due to the leaching of minerals. Groundwater accounts for 98 percent of the earth’s potable water. An excess of fluoride … Read more
Distillation is a water purification method that utilizes heat to collect pure water in the form of vapor. This method is effective by the scientific fact that water has a lower boiling point than other contaminants and disease-causing elements found in water. Water is subjected to a heat source until it attains its boiling point. … Read more
Chlorine is a powerful chemical that has been in use for many years to treat water for home consumption. Chlorine is an effective water purification method that kills germs, parasites and other disease-causing organisms found in ground or tap water. Water can be purified using chlorine tablets or liquid chlorine. As an off-the-shelf water purification … Read more
The earliest evidence of pottery manufacture comes from the site of Mehrgarh in Baluchistan, dated to 6500 BC. One of the characteristic features of the Chalcolithic period is a well-developed ceramic industry. They produced fine painted and plain and coarse pottery for a variety of purposes. Besides, the people of the Ahar and Narahan cultures … Read more
The Vernacular Press Act of 1878 was enacted to curtail the freedom of the Indian-languages’ press. Lord Lytton was being bitterly criticized for the Second Anglo-Afghan War (1878–80). So, he promulgated the act with an aim to prevent the vernacular press from expressing criticism of British policies under him. The act excluded English-language publications. It … Read more
Ultraviolet (UV) disinfection systems contact the treated secondary wastewater with UV light bulbs that are encased in clear housings. The UV light kills pathogenic organisms by using a germicidal photochemical wavelength. Unlike chlorination, UV leaves no residual in the wastewater with which to be concerned. Plants that use UV must either have dual UV systems … Read more
It is a UN body It leads international efforts to defeat hunger It was Established in 1945. It is headquartered at Rome. In theory, acts as a neutral forum where all nations meet as equals to negotiate agreements and debate policy FAO is also a source of knowledge and information, and helps developing countries and … Read more
Shale gas refers to natural gas that is trapped within shale formations. Shales are fine-grained sedimentary rocks that can be rich sources of petroleum and natural gas. Over the past decade, the combination of horizontal drilling and hydraulic fracturing has allowed access to large volumes of shale gas that were previously uneconomical to produce. Typical components of oil shale gas are usually methane, … Read more
Concept of sea floor spreading was given by Henry Hess which was crucial to establish the formation of different geological surface on the earth. The major findings were: The crust below the ocean floor was found only 7-8 km thick. The existence of mid Atlantic ridge was known, but it was found that mid oceanic … Read more