Mechanism of chalcone formation Kinetic studies have been reported for the base-catalyzed formation of chalcone and its derivatives. [7‚ 8‚ 9] Two alternative mechanisms have been advanced for the reaction of benzaldehyde with acetophenone in the presence of a basic catalyst. 5 The formation of chalcone by the acid catalyzed condensation of acetophenone and benzaldehyde has been studied [10]. The following mechanism seems to be operating- 6 Importance of chalcones [1]They have close relationship
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NTRODUCTION TO THE INDUSTRY The Travel and Tourism industry is still one of the largest single businesses in world commerce and its importance is widely recognized. The tourism industry is now one of the largest sectors earning foreign exchange. In the face of many benefits‚ many countries have started assigning due weightage to the tourism industry in their national development agenda. Tourism statistics: i. The tourism industry as a whole is presently estimated to earn over US$ 3.5 trillion
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झाँसी Coordinates 25°26′55″N 78°34′11″ECoordinates: 25°26′55″N 78°34′11″E Country-India Region -Bundelkhand State-Uttar Pradesh District(s)-Jhansi Mayor Dr. B. Lal Deputy Mayor -Mrs. Sushila Dubey Population • Density 504‚292 (2001) • 3‚094 /km2 (8‚013 /sq mi) Official languages Hindi Time zone IST (UTC+5:30) Area • Elevation • 285 metres (935 ft) Codes• Pincode • 284 00x • Telephone • +91-510 • Vehicle • UP-93 Website jhansi.nic.in Jhansi (झाँसी)is a historical
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Hinduism is a very complex and intricate henotheistic religion. It is mainly practiced in India and came before all the other religions in India. The most important sacred text of Hinduism is called the Vedas. It consists of four Veda texts in which the other texts of Hinduism are based around. Hindus base their lives around the four goals. Hindus divide their scripture into two categories: Shruti and Smriti. The Shruti is the primary revelation which has no human or divine author but has
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Process Analysis THE STRATEGIES The process-analysis essay is an elementary but essential writing strategy. Most teachers prefer to teach it as the first expository form because all students have had experience giving and following directions and because composition students can use the skills that they have already studied in narration and description to explain the stages in a process. Like the chronology of events and the pattern of details‚ the stages in a process provide a plan for the process-analysis
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Offer Proposal is defined under section 2(a) of the Indian contract Act‚ 1872 as "when one person signifies to another his willingness to do or to abstain from doing anything with a view to obtain the assent of that other to such act or abstinence‚ he is said to make a proposal/offer". Thus‚ for a valid offer‚ the party making it must express his willingness to do or not to do something. But mere expression of willingness does not constitute an offer. The rules regarding the offer are The offer
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Bhagat Singh In 1923‚ Singh joined the National College in Lahore‚ where he not only excelled in academics but also in extra-curricular activities.[3] He was a participant of the dramatics society in the college.[3] By this time‚ he was fluent in Hindi‚ English‚ Urdu‚ Punjabi and Sanskrit languages.[3][26][27] In 1923‚ Singh won an essay competition set by the Punjab Hindi Sahitya Sammelan. In his essay on Punjab’s Language and Script‚ he quoted Punjabi literature and showed a deep understanding
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Sahitya Akademi. pp. 4567–4569. ISBN 9788126012213. 6.^ Nikhil Sarkar [Sripantho]‚ "Bat tala"‚ (Calcutta: Ananda‚ 1977) p. 66. (This text is in Bengali and is‚ unfortunately‚ yet to be translated.) 7.^ Romesh Dutt‚ Cultural Heritage of Bengal‚ Calcutta‚ Punthi Pustak (1962)‚ p 8.^ Romesh Dutt‚ Cultural Heritage of Bengal‚ Calcutta‚ Punthi Pustak (1962)‚ p. 117.
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JANUARY 30th‚ 1949 - The Mahatma was assassinated by a man called Naturam Godse. After he shot him‚ instead of running away‚ he stood his ground and surrounded. He said‚ "No one should think that Gandhi was killed by a madman" One of the best speeches of All time‚ which is compared to Socrates’s speech in his trial. The Judge was astonished by his speech and commented that if India had followed the Jury system of giving judgments‚ Godse would have been adjudicated as "Not Guilty" by the Jury‚ cause
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2.5. Characterization Methods 1H–NMR and 13C–NMR spectra of HPPP‚ BOMP and HVPA were taken in CDCl3 on Bruker DPX–300 MHz spectrometer using tetramethylsilane (TMS) as an internal standard. FT–IR spectra of the synthesized compounds‚ HPPP‚ BOMP‚ HVPA and photocrosslinked polymers were recorded on Perkin-Elmer system 2000 (4000–400 cm–1) spectrometer‚ using KBr pellets. Medium pressure mercury vapour lamp to the power output of 125W/cm2 was used for the photocrosslinking study. The viscosity of the
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