UKPCS Prelims and Mains Notes-UKPSC Test Series
Properties of soaps and detergents Soap – Characteristics And Uses Soaps are excellent cleansing agents and have good biodegradability. A serious drawback which reduces their general use, is the tendency for the carboxylate ion to react with Ca+ and Mg+ ions in hard water. The result is a water insoluble salt which can be deposited on … Read more Properties of soaps and detergents
UTTARAKHAND State govt initiates slew of schemes for welfare of ex-servicemen, says rawat The State Government has undertaken a slew of schemes for the welfare of the ex-servicemen and efforts are being made to connect them with tourism, Chief Minister Trivendra Singh Rawat said while addressing the veterans of the armed forces at … Read more 12.06.18 Uttarakhand (UKPCS) Current Affairs
Preparation of nitrogen Nitrogen is found in both free and combined states. It occupies 78.07% by volume. Nitrogen can be prepared: By heating copper in air: Firstly, air is passed through lime water and then concentrated sulphuric acid to make the air free from carbon dioxide and moistures respectively. The air contains only nitrogen … Read more Preparation of nitrogen
Metallurgy concentration, roasting, smelting 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. … Read more Metallurgy concentration, roasting, smelting
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 Refining of ores Metallurgy
Non Metals As far as elements are concerned, a nonmetal is simply an element that does not display the properties of a metal. It is not defined by what it is, but by what it is not. It doesn’t look metallic, can’t be drawn into a wire or pounded into shape or bent, doesn’t conduct … Read more Non Metals