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NCERT Solutions for Class 10 English Chapter 5 - Unit 1 Natures Medicines

NCERT Solutions for Class 10 English Chapter 5 Unit 1 Natures Medicines are provided here with simple step-by-step explanations. These solutions for Unit 1 Natures Medicines are extremely popular among class 10 students for English Unit 1 Natures Medicines Solutions come handy for quickly completing your homework and preparing for exams. All questions and answers from the NCERT Book of class 10 English Chapter 5 are provided here for you for free. You will also love the ad-free experience on Meritnation’s NCERT Solutions. All NCERT solutions for class 10 English are prepared by experts and are 100% accurate.

Page No 36:

Question E.2:

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.

Subtitles

Paragraph Number

Birth of the first modern drug.

_________________

Man’s hunt for medicinal plants from ancient times.

_________________

Contribution of Greek scholars

_________________

Pioneering isolation of compounds

_________________

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

_________________

Positive effects of new trade and trading routes

_________________

The Wonder Tree

_________________

Knowledge from ancient Egypt

_________________

Answer:

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 Tree

6

Knowledge from ancient Egypt

2

Page No 36:

Question E.3:

Find words from the passage that mean the same or nearly the same as the following:

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

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

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

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

(e) notably large or significant (para 5 ) : ____________________________

Answer:

(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



Page No 37:

Question E.4(a):

After the Renaissance, the major shifts that occurred in the approach towards herbal plants were ___________________________________________________________________

___________________________________________________________________

Answer:

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.

Page No 37:

Question E.4(b):

Isolation of compounds from plants to be used as drugs was the ____________________________________________________________________

____________________________________________________________________

Answer:

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.

Page No 37:

Question E.5:

Complete the following flowchart that traces the contributory processes leading to the development of the first modern drug from the willow tree.

Answer:

(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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