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प्रश्न
Complete the following flowchart that traces the contributory processes leading to the development of the first modem drug from the willow tree.
उत्तर
(a) salicin, the first major compound, was obtained in 1828
(b) In 1838, the Italian chemist, Raffaele Piria also obtained salicylic acid from the bark by various chemical processes.
(c) In 1853, a French chemist, Charles Frederic Gerhardt, synthesised a modified form of salicylic acid-acetylsalicylic acid.
(d) Felix Hoffman's contribution of rediscovering Gerhardt's compound
(d) Bayer decided to market the acetylsalicylic acid as a new drug for pain relief and patented the compound acetylsalicylic acid in 1899.
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संबंधित प्रश्न
Some sub titles are given below corresponding to each of the paragraphs of the article that you have just read. Match the sub-titles with their paragraphs by writing the number of the paragraph in the space provided.
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Subtitles |
Paragraph Number |
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Birth of the first modern drug |
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Man's hunt for medicinal plants from ancient times |
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Contribution of Greek scholars |
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Pioneering isolation of compounds |
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The beginning of a new era of recreation of plant components with modifications |
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Positive effects of new trade and trading routes |
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The wonder thee |
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Knowledge form ancient Egypt |
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Find word from the passage that mean the same or nearly the same as the following .
filled with a certain quality (para 1) : _______________
Find word from the passage that mean the same or nearly the same as the following .
scented or perfumed or sweet-smelling (para 2) : _______________
Find word from the passage that mean the same or nearly the same as the following .
written work dealing with a subject systematically (para 3) : _______________
Find word from the passage that mean the same or nearly the same as the following .
people living at the same time as others (para 5) : _______________
Find word from the passage that mean the same or nearly the same as the following .
notably large or significant (para 5) : _______________
Complete the following sentence on the basis of your reading of the text in Dl.
After the Renaissance, the major shifts that occurred in the approach towards herbal plants were __________
Complete the following sentence on the basis of your reading of the text in Dl.
Isolation of compounds from plants to be used as drugs was the __________
