NCERT Solutions for Class 10 English Chapter 1(E) - Nature's Medicines

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Chapter 1(E) - Nature's Medicines Exercise 36

Solution 2

Subtitles

Paragraph Number

Birth of the first modern drug

7

Man's hunt for medicinal plants from ancient times

1

Contribution of Greek scholars

3

Pioneering isolation of compounds

5

The beginning of a new era of recreation of plant components with modifications

8

Positive effects of new trade and trading routes

4

The wonder thee

6

Knowledge form ancient Egypt

2

Solution 3

(a) filled with a certain quality ( para 1 ) : imbued

(b) scented or perfumed or sweet-smelling (para 2) : aromatic

(c) written work dealing with a subject systematically (para 3): treatise

(d) people living at the same time as others (para 5) : contemporaries

(e) notably large or significant (para 6 ) : considerable

Chapter 1(E) - Nature's Medicines Exercise 37

Solution 4(a)

After the Renaissance, the major shifts that occurred in the approach towards herbal plants were that scientists and their scientific studies, discoveries and inventions came to the fore. Alchemists' elixirs and other magical remedies were rejected. Local plants were carefully collected and widely used to make infusions, decoctions and ointments.

Solution 4(b)

Isolation of compounds from plants to be used as drugs was the technique developed by the Swedish chemist Carl Wilheim Scheele and his contemporaries in the late 1700s.

Solution 5

(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.