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Assertive Sentence Narration Change Worksheet (Direct Speech to Indirect Speech) The Greenhouse Effect – Carl Dennis | Class 12 Sonnet no. 73 That time of year thou mayst in me behold | Class 12 Hawk Roosting – Ted Hughes | Class 12 Down The Rabbit-Hole – Lewis Carrol | Class 12 Tara- Mahesh Dattani | Class 12 Our Casuarina Tree – Toru Dutt | Class 12 From A Room of One’s Own [SHAKESPEARE’S SISTER] – Virginia Woolf | Class 12 The Night Train at Deoli – Ruskin Bond (বঙ্গানুবাদ) | Class 12 Amarnath-Sister Nivedita MCQs and Answers | Class 11

Acharya Prafulla Chandra Roy

Prafulla Chandra Roy is one of the famous scientists that India has ever produced. He was born on 2nd August, 1861 at Khulna (now Bangladesh). He started his primary education in a village Pathsala. Later he had his education in some well-known schools like Hare School and Albert School. He passed the entrance examination in 1879,  F.A. from Metropolitan College in 1882. He won Gilchrist scholarship in 1882 and  went to London for further study. He earned the degrees of B.Sc. and D.Sc. from Edinburgh University. He returned to Calcutta and joined as a Professor  of Chemistry in the Presidency College in 1889. He was the first scientist to prepare Mercurous Nitrite in laboratory in 1896. In 1901, he single handedly established ‘The Bengal Chemicals, the first Indian Pharmaceutical company. Later he joined Science College as palit Professor. He is considered as the ‘Father of the modern Indian chemical Industry’. He breathed his last on June 16th,1944.

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