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Priyadaranjan Ray
Priyadaranjan Ray FNA, FIAS (16 January 1888 – 11 December 1982) was an Indian inorganic chemist and historian of chemistry noted for proposing the Ray-Dutt twist mechanism. Life and career Ray was born in Chittagong District, Bengal Presidency (now in Bangladesh) to a ''zamindari'' family originally from Hooghly district (now in West Bengal), which had first migrated to the princely state of Tripura in the late 17th century, and had subsequently entered the service of the Nawabs of Bengal. The family were granted the estate of Noapara in the early 18th century by Nawab Murshid Quli Khan, the first Nawab of Bengal. After matriculating with distinction from the Chittagong Collegiate School in 1904, Ray secured a scholarship to Chittagong Government College and in 1906 joined Presidency College Calcutta as an undergraduate. He secured an honours degree in chemistry and physics in 1908, and then studied under Prafulla Chandra Ray for his master's degree, which he secured ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chittagong District
Chittagong District, renamed the Chattogram District, is a district located in the south-eastern region of Bangladesh. It is a part of the Chattogram Division. The port city of Chattogram, which is the second largest city in Bangladesh, is located within this district. History Because of the natural harbour, Chattogram had been an important location for trade, drawing Arab traders as early as the 9th century CE. The region fell under the rule of kings from Arakan in the 16th and 17th centuries, but later, the Mughal Army under Shaista Khan conquered Chattogram. During the 17th century, the region also faced a lot of attacks by Portuguese pirates. The Mughals established Chattogram as a district in 1666. Chattogram is the 2nd largest district in Bangladesh by population and area. The Chattogram Hill Tracts were separated from Chittagong in 1860. In 1947, Chattogram came under Pakistan and became part a district of East Pakistan. Port of Chattogram was a big spot for exports ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hooghly District
Hooghly district () is one of the districts of the Indian state of West Bengal. It can alternatively be spelt ''Hoogli'' or ''Hugli''. The district is named after the Hooghly River. The headquarters of the district are at Hooghly-Chinsura (''Chuchura''). There are four subdivisions: Chinsurah Sadar, Srirampore, Chandannagore, and Arambagh. History The district of Hooghly derived its name from the town of Hooghly on the west bank of the Hugli River about 40 km north of Kolkata. This town was a major river port for trade in India before colonialism. The district has thousands of years of rich heritage as part of the Bengali kingdom of Bhurshut. The first European to reach this area was the Portuguese sailor Vasco da Gama. In 1536 Portuguese traders obtained a permit from Sultan Mahmud Shah to trade in this area. In those days the Hooghly River was the main route for transportation and Hooghly served as an excellent trading port. Within a few decades, the town o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Indian Chemical Society
The Indian Chemical Society is a scientific society dedicated in the field of chemistry from India. It was established in 1924 with Prafulla Chandra Ray as its founding president. The same year the society started to publish its "Quarterly Journal of Indian Chemical Society" (1924– 1927) which is currently known as Journal of Indian Chemical Society. Fellows *Animesh Chakravorty Animesh Chakravorty FNA, FASc (born 30 June 1935) is a Bengali Indian inorganic chemist. In 1975, he was awarded the Shanti Swarup Bhatnagar Prize for Science and Technology in chemistry by the Council of Scientific and Industrial Research. E ... Indian Chemical Society – North Branch To serve more efficiently towards the scientific objective of the society, on the 3rd day of March 2020 ICS has launched thIndian Chemical Society – North Branch [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rajabazar Science College
The University College of Science, Technology and Agriculture (commonly or formerly known as Rashbehari Siksha Prangan & Taraknath Palit Siksha Prangan or Rajabazar Science College & Ballygunge Science College) are two of five main campuses of the University of Calcutta (CU). The college served as the cradle of Indian Sciences by winning the Nobel Prize in Physics in 1930 and many fellowships of the Royal Society London. History Despite the fact that the Presidency College at Calcutta witnessed great scientific research by Jagadish Chandra Bose and Prafulla Chandra Ray in the last decade of the 19th and the first decade of the 20th century, first organised scientific research at Calcutta University began with the establishment of its University College of Science and Technology in March 1914. A galaxy of Indian scientists joined the Chairs set up with the income of the endowments of nearly thirty seven and half lakhs rupees donated by Sir Taraknath Palit and Sir Rash ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
City College, Kolkata
City College is a composite fully state government-aided public college, affiliated to the University of Calcutta. Established in 1881, it is one of the heritage institutions of Kolkata, and played a prominent role in the wake of the Bengal Renaissance of the nineteenth century. The college is located at 102/1, Raja Rammohan Roy Sarani ( Amherst Street), Kolkata-700009. It shares premises with Rammohan College (morning college) and Anandamohan College (evening college). In the year 1961 the branches of City College emerged as separate colleges under instructions of the University Grants Commission. While the original college retained the original name “City College”, the branches were named as 1. Rammohan College, 2. Ananda Mohan College, 3. Umesh Chandra College, 4. City College of Commerce and Business Administration, 5. Sivanath Sastri College, 6. Heramba Chandra College, and 7. Prafulla Chandra College. Together they are referred to as City group of College (Kolkat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sulfuric Acid
Sulfuric acid ( American spelling and the preferred IUPAC name) or sulphuric acid ( Commonwealth spelling), known in antiquity as oil of vitriol, is a mineral acid composed of the elements sulfur, oxygen and hydrogen, with the molecular formula . It is a colorless, odorless and viscous liquid that is miscible with water. Pure sulfuric acid does not exist naturally on Earth due to its strong affinity to water vapor; it is hygroscopic and readily absorbs water vapor from the air. Concentrated sulfuric acid is highly corrosive towards other materials, from rocks to metals, since it is an oxidant with powerful dehydrating properties. Phosphorus pentoxide is a notable exception in that it is not dehydrated by sulfuric acid, but to the contrary dehydrates sulfuric acid to sulfur trioxide. Upon addition of sulfuric acid to water, a considerable amount of heat is released; thus the reverse procedure of adding water to the acid should not be performed since the heat released ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Potassium Thiocyanate
Potassium thiocyanate is the chemical compound with the molecular formula KSCN. It is an important salt of the thiocyanate anion, one of the pseudohalides. The compound has a low melting point relative to most other inorganic salts. Use in chemical synthesis Aqueous KSCN reacts almost quantitatively with Pb(NO3)2 to give Pb(SCN)2, which has been used to convert acyl chlorides to isothiocyanates. KSCN converts ethylene carbonate to ethylenesulfide. For this purpose, the KSCN is first melted under vacuum to remove water. In a related reaction, KSCN converts cyclohexene oxide to the corresponding episulfide. :C6H10O + KSCN → C6H10S + KOCN KSCN is also the starting product for the synthesis of carbonyl sulfide. Other uses Dilute aqueous KSCN is occasionally used for moderately realistic blood effects in film and theater. It can be painted onto a surface or kept as a colorless solution. When in contact with ferric chloride solution (or other solutions containing ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Copper(I) Thiocyanate
Copper(I) thiocyanate (or cuprous thiocyanate) is a coordination polymer with formula CuSCN. It is an air-stable, white solid used as a precursor for the preparation of other thiocyanate salts. Structure At least two polymorphs have been characterized by X-ray crystallography. They both feature copper(I) in a characteristic tetrahedral coordination geometry. The sulfur end of the SCN- ligand is triply bridging so that the coordination sphere for copper is CuS3N.Smith, D. L.; Saunders, V. I. "Preparation and Structure Refinement of the 2H Polytype of beta-Copper(I) Thiocyanate" Acta Crystallographica B, 1982, volume 38, 907-909. Synthesis Copper(I) thiocyanate forms from the spontaneous decomposition of black copper(II) thiocyanate, releasing thiocyanogen, especially when heated. It is also formed from copper(II) thiocyanate under water, releasing (among others) thiocyanic acid and the highly poisonous hydrogen cyanide. It is conveniently prepared from relatively dilute solu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Master's Degree
A master's degree (from Latin ) is an academic degree awarded by universities or colleges upon completion of a course of study demonstrating mastery or a high-order overview of a specific field of study or area of professional practice. A master's degree normally requires previous study at the bachelor's degree, bachelor's level, either as a separate degree or as part of an integrated course. Within the area studied, master's graduates are expected to possess advanced knowledge of a specialized body of theoretical and applied topics; high order skills in analysis, [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prafulla Chandra Ray
Sir Prafulla Chandra Ray, CIE, FNI, FRASB, FIAS, FCS (also spelled Prafulla Chandra Rây and Prafulla Chandra Roy; bn, প্রফুল্ল চন্দ্র রায় ''Praphulla Chandra Rāy''; 2 August 1861 – 16 June 1944) was an eminent Indian chemist, educationist, historian, industrialist and philanthropist. He established the first modern Indian research school in chemistry (post classical age) and is regarded as the father of chemical science in India. The Royal Society of Chemistry honoured his life and work with the first ever Chemical Landmark Plaque outside Europe. He was the founder of Bengal Chemicals & Pharmaceuticals, India's first pharmaceutical company. He is the author of '' A History of Hindu Chemistry from the Earliest Times to the Middle of the Sixteenth Century'' (1902). Biography Family background Prafulla Chandra Ray was born in the village of Raruli-Katipara, then in Jessore District (subsequently in Khulna District), in the easter ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chittagong College
Chittagong College is a government college in Chittagong, Bangladesh. It is the second college established in Bangladesh after Dhaka College. It offers higher secondary education (HSC), bachelor's degree and master's degree. History Having begun as Chattogram District school (now Chittagong Collegiate School) in 1836, it became an intermediate college in 2nd January 1869. Its academic activities as a college started at a Portuguese-merchant built building beside the Parade Ground. The first principal was J C Bose. Initially, it used to offer law education, but the subject was suspended in 1909. In the same year it started providing science education in the intermediate section from the 1909. The institute became a graduation college in 1910 after University of Calcutta recognized it as a first class degree college. From then it started providing honours degrees on Arabic, Bengali, Pali, Sanskrit, history, mathematics, physics and chemistry. From 1919 it started supplementary cou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chittagong Collegiate School And College
Chittagong Collegiate School is a government educational institution in Chittagong, the southern port city in Bangladesh.It provides education from 5th to 12th grade. Established in 1836, it is one of the oldest and the best educational institutes in Chittagong and one of the in country. In 2016 Chittagong Collegiate School celebrated its 180 years of establishment. History Chittagong Collegiate School and College was established as Chittagong Government School in 1836. The school was the first English medium high school in Chittagong. Its classes were held in a brick building constructed during the early years of British rule. The school was then shifted to a new location at the southern section of the market Sahib Hills. In 1886, the school was relocated to its present location at Collegiate School Road, North Nalapara, near the Chittagong Railway Station, and was named as Chittagong Collegiate School. Until the first decade of the twentieth century, the school was popularly know ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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