GSEB Class 10 Social Science Solutions Chapter 5 ભારતનો વિજ્ઞાન અને ટેક્નોલૉજીનો વારસો

1. Answer The Following Questions In Detail:

Question 1. Explain ancient India's contribution to metallurgy. OR Describe the progress made by ancient India in metallurgy. OR Explain how ancient India achieved unique feats in metallurgy.
Answer: Ancient India gained great success in metallurgy, as evidenced by the metal artifacts listed below:

• From the remains of the Indus Valley (Harappan) civilization in ancient India, a bronze statue of a dancing girl was found.
• Statues of Lord Buddha from the period of the *Dynasty* kings were discovered in Taxila.
• The art of making metal sculptures began to flourish in India from the 10th and 11th centuries. During the reign of Chola kings in South India, a large number of metal sculptures were created.
• The world-famous sculpture of Mahadev Nataraja (Shiva) created during this time is a prime example of ancient Indian metallurgy. This sculpture is now stored in a museum in Chennai (Tamil Nadu).
• A metal idol of Lord Rama holding a bow is also preserved in the Chennai (Tamil Nadu) museum.
• Metal statues of Buddha found in Sarnath from the Gupta kings' era, copper idols of Buddha found in Nalanda and Sultanganj, and Jain idols from Mathura are excellent examples of metallurgy.
• Artistic idols of gods and goddesses, animals and birds, swing chains, various types of nutcrackers for betel nuts, and artistic lamps made from metals are considered important metal artifacts.
• The Iron Pillar of Delhi has endured cold, heat, and rain without rusting, which is an amazing feat of metallurgy.

Exam Tip: Always mention specific examples of metal artifacts and their historical context (e.g., Indus Valley, Chola period, Gupta period) to showcase India's rich metallurgical heritage.

Question 2. Describe the progress made by ancient India in the field of chemistry. OR Provide an introduction to chemistry as an experimental science. (March 20) OR Give information about chemistry in the context of ancient India. (August 20)
Answer: Ancient India's advancement in chemistry is shown through these points:

• Acharya Nagarjuna, a Buddhist scholar at Nalanda University, suggested using chemical medicines alongside herbal remedies. He is regarded as the father of Indian chemistry. He penned books named 'Rasararatnakara' and 'Arogyamanjari'.
• It is believed that Acharya Nagarjuna started the practice of using mercury ash as medicine.
• Nalanda University built separate laboratories and furnaces for the study and research of chemistry.
• Chemistry texts describe main and secondary essences, ten types of poisons, various salts, and metal ashes.
• The 7\( \frac { 1 }{ 2 } \) feet tall and 1-ton heavy copper Buddha statue found in Sultanganj, Bhagalpur district, Bihar, and the 18-foot tall copper Buddha statue from Nalanda are prime examples of the extraordinary progress made in chemistry in ancient India.
• During the reign of Gupta emperor Chandragupta II (Vikramaditya), a 24-foot tall and 7-ton heavy victory pillar (Iron Pillar) was erected near Mehrauli in Delhi.
• This iron pillar has endured cold, heat, and rain without rusting, which is an astonishing achievement of ancient Indian metallurgy and chemistry.

Exam Tip: When discussing chemistry in ancient India, make sure to name prominent figures like Acharya Nagarjuna and key discoveries or artifacts, such as mercury ash and the Delhi Iron Pillar, to provide detailed insights.

Question 3. Explain the importance of ancient India in medicine and surgery. OR Write about medicine and surgery in ancient India. (August 20) OR Describe the unprecedented achievements made by ancient India in medicine and surgery.
Answer: Pioneers of Indian medical science, Maharshi Charaka, Maharshi Sushruta, and Vagbhata, achieved remarkable success in medicine through their research.

• Maharshi Charaka, a great pioneer of medicine, described over 2000 plant-based medicines in his book 'Charaka Samhita'.
• Maharshi Sushruta, a great surgeon, mentioned sharp instruments for surgery (cutting science - operation) in his book 'Sushruta Samhita', which could vertically split a single hair.
• Ancient Indian pharmacology had a rich collection of mineral, plant, and animal-based medicines. It also provided intricate methods for preparing medicines, classification of drugs, and instructions for their use.
• Indian physicians performed surgeries by tying a cup-shaped bandage to stop blood circulation. They also operated on the abdomen and urinary bladder, removing hernias, cataracts, kidney stones, and hemorrhoids.
• They could set fractured and dislocated bones and skillfully extract foreign objects embedded in the body.
• They knew 'plastic surgery' to attach new ears or noses in place of damaged ones.
• They also crafted surgical instruments and gave practical knowledge of operations to students by operating on wax models or cadavers. They did not hesitate to perform risky operations during childbirth.
• They were experts in treating diseases of women and children.
• They classified the causes and symptoms of diseases. They diagnosed diseases and prescribed dietary restrictions after recovery.
• Ancient Indian physicians developed a science for animal diseases. They wrote books on horse and elephant diseases. 'Hasti Ayurved' and 'Shalihotra Samhita' by Shalihotra are very famous texts.
• Vagbhata, a notable medical writer, made significant contributions to diagnosis by writing many books like 'Ashtanga Hrudayam'.

Exam Tip: Highlighting the specific contributions of Charaka (Charaka Samhita, herbal medicine), Sushruta (Sushruta Samhita, surgical instruments, plastic surgery), and Vagbhata (Ashtanga Hrudayam) is crucial for a complete answer.

Question 4. State ancient India's contribution to the field of science.
Answer: Ancient India made significant advancements in various sciences, including metallurgy, chemistry, mathematics, astronomy, medicine, surgery, astrology, Vastu Shastra, and physics, leaving an invaluable legacy to the world.

• India has made a huge contribution in the field of science and technology. Modern research has proved that India holds a scientific perspective along with its spiritual ideology.
• The foundational principles of ancient Indian science are evident at the core of almost all scientific and technical achievements made by Western countries today.
• This clearly indicates that ancient India provided a significant heritage in the realm of science.

Exam Tip: When discussing India's scientific heritage, list key scientific fields and emphasize the blend of spiritual and scientific thought, along with the influence of ancient Indian principles on modern science.

2. Answer The Following Questions In Points:

Question 1. Write a note on the progress made by ancient India in mathematics. OR Describe the progress made by India in mathematics. OR State the notable achievements of ancient Indian mathematicians.
Answer: Ancient India had several groundbreaking discoveries in the field of mathematics:

• India gave the world the concept of zero \( (0) \), the decimal system, algebra, geometry, Vedic mathematics, and theorems like the Bodhayana theorem.
• The great mathematician Aryabhata discovered the concept of zero \( (0) \) and the decimal system. In his book 'Aryabhattiyam', he stated that the value of pi \( (\pi) \) is approximately \( \frac { 22 }{ 7 } \) \( (3.14) \). He also established that pi \( (\pi) \) is a constant representing the ratio of a sphere's circumference to its diameter.
• In his writings, Aryabhata provided details on the modern method of division, multiplication, division, addition, subtraction, square roots, and cube roots, which are eight fundamental operations. Thus, Aryabhata is known as the 'father of mathematics'. Aryabhata wrote texts like 'Dasagitika' and 'Aryasiddhanta'. In 'Aryasiddhanta', he briefly described the basic principles of astrology and solved fundamental problems in algebra, arithmetic, and geometry.
• The sage Gritsamada discovered the process of writing numbers by placing a zero \( (0) \) after a digit.
• Ancient Indian mathematicians identified names for numbers formed by placing 53 zeros after 1.
• Evidence of the decimal system, found in measuring and weighing instruments from the Mohenjo-Daro and Harappa remains, was introduced by the mathematician Medhatithi in ancient times.
• In 1150 AD, the great mathematician Bhaskaracharya wrote the famous book 'Lilavati Ganit'. Additionally, he wrote books on algebra, arithmetic, and astronomy. He also discovered the concepts of \( + \) (addition) and \( - \) (subtraction).
• Mathematician Brahmagupta discovered types of equations.
• Mathematician Apastambha, in his 'Shulbasutras' (800 BCE), determined the proportions of various altars required for different Vedic sacrifices.
• Mathematicians Bodhayana and Katyayana discussed various aspects of mathematics in their texts.

Exam Tip: Always specify Aryabhata's contributions like zero, decimal system, and pi. Also, mention other mathematicians and their works, for instance, Bhaskaracharya and Lilavati Ganit, to provide a detailed overview.

Question 2. Write a short note on: Ancient Indian astronomy. OR State ancient India's contribution to astronomy.
Answer: Ancient India's contributions to astronomy are as follows:

• Among all sciences, astronomy is considered the oldest.
• Ancient Indian universities taught astronomy systematically and in depth.
• Information related to astronomy was gathered by calculating the movements of planets, constellations, and other celestial bodies.
• The great astronomer and astrologer Varahamihira provided authentic information about astrology and astronomy in his book 'Panchasiddhantika'.
• Astrology based on planetary positions was used to predict fate.
• During the Gupta period, the great astronomer Aryabhata first proposed (proved) that the Earth rotates on its axis and that lunar eclipses occur due to the Earth's shadow. Scholars referred to this matter as "Ajarbhar".
• Aryabhata's contribution to astronomy is very important. Therefore, India's first satellite was named 'Aryabhata'.
• A scientist named Brahmagupta wrote the book 'Brahmasiddhanta', in which he explained the laws of gravity.

Exam Tip: Emphasize the systematic study of astronomy in ancient India, mention Aryabhata's significant theories (Earth's rotation, lunar eclipse), and Varahamihira's 'Panchasiddhantika' as key points.

Question 3. Describe India's contribution to astrology. OR State Varahamihira's contribution to the field of astrology.
Answer: India's contributions to the field of astrology are as follows:

• Varahamihira was a renowned astronomer and astrologer. He divided astrology into three parts: 'Tantra', 'Hora', and 'Samhita'.
• In his book 'Brihat Samhita', Varahamihira explained the effects of celestial bodies on human destiny.
• In this book, he also provided information on human characteristics and different types of animals, as well as auspicious timings for events like marriages, digging ponds and wells, creating gardens, and sowing seeds in fields.
• Thus, India's contribution to astrology is unparalleled.

Exam Tip: Highlight Varahamihira's work, including his categorization of astrology and the details in his 'Brihat Samhita' about planetary influences and auspicious timings.

Question 4. What information is included in Vastu Shastra?
Answer: Vastu Shastra includes information on how to construct residential places, temples, palaces, stables, forts, armories, and cities, and in which directions these structures should face. It offers guidelines for building harmoniously.
In simple words: Vastu Shastra tells us how to plan and build different structures like homes, temples, and towns, and which way they should face for good energy.

Exam Tip: Mention the diverse types of structures Vastu Shastra covers (from homes to cities) and its focus on directional placement for good planning.

3. Answer The Following Questions Briefly:

Question 1. What is science and technology?
Answer: Science refers to organized knowledge, while technology means the practical application of scientific knowledge. Science gives us understanding, and technology uses that understanding to create useful things.
In simple words: Science is organized knowledge, and technology is how we use that knowledge in real life.

Exam Tip: Clearly distinguish between science as knowledge and technology as its practical application.

Question 2. State Nagarjuna's contribution to the field of chemistry.
Answer: Acharya Nagarjuna was a revered Indian chemist. He authored important texts named 'Rasararatnakara' and 'Arogyamanjari'.

• He recommended using chemical remedies along with herbal medicines.
• It is believed that he initiated the practice of transforming mercury into ash for medicinal purposes.

Exam Tip: Focus on Nagarjuna's identity as a chemist, his key texts, and his notable contributions like advocating chemical medicines and the use of mercury ash.

Question 3. Write a note on Aryabhata's discoveries in the field of mathematics. OR What important discoveries did Aryabhata make?
Answer: Aryabhata was a great mathematician of ancient India. He composed the famous book 'Aryabhattiyam'. He made the following important discoveries:

• The invention of zero \( (0) \).
• The discovery that the value of pi \( (\pi) \) is approximately \( \frac { 22 }{ 7 } \) \( (3.14) \).
• The discovery that pi \( (\pi) \) is a constant representing the ratio of a sphere's circumference to its diameter. Also, he developed the eight fundamental operations: division, multiplication, addition, subtraction, square root, and cube root.
• The discovery of the basic principles of astrology.
• Aryabhata was the first to prove that the Earth revolves on its axis and that lunar eclipses are caused by the Earth's shadow. He also solved fundamental problems in arithmetic, algebra, and geometry.

Exam Tip: Ensure to list Aryabhata's key mathematical contributions, such as the concept of zero, the value of pi, and his astronomical findings like Earth's rotation and lunar eclipses.

Question. How many parts is astrology divided into?
Answer: Astrology is divided into three sections.
In simple words: Astrology is split into three main parts.

Exam Tip: When asked about divisions, simply state the number of parts and, if known, their names.

Question 5. Name the pioneers of Vastu Shastra.
Answer: The pioneers of Vastu Shastra include Brahma, Narada, Brihaspati, Bhrigu, Vasistha, Vishwakarma, and others. These figures are considered foundational to its development.
In simple words: The important people who started Vastu Shastra are Brahma, Narada, Brihaspati, Bhrigu, Vasistha, and Vishwakarma.

Exam Tip: When listing pioneers, try to include as many names as possible from the provided source to show comprehensive knowledge.

4. Choose The Correct Option From The Following And Write The Answer:

Question 1. Which sculpture holds international fame from an artistic perspective?
(a) Of Buddha
(b) Of Mahadev Nataraja
(c) Of Bodhgaya
(d) Of archer Rama
Answer: (b) Of Mahadev Nataraja
In simple words: The sculpture of Mahadev Nataraja is very famous around the world for its art.

Exam Tip: Remember specific examples of internationally renowned artistic works mentioned in the chapter, such as the Nataraja sculpture.

Question 2. Which of the following statements is NOT true?
(a) Nagarjuna is considered the pioneer of Indian chemistry.
(b) Nagarjuna initiated the practice of using mercury ash as medicine.
(c) Chemistry is not an experimental science.
(d) Descriptions of metal ashes are found in chemistry texts.
Answer: (c) Chemistry is not an experimental science.
In simple words: Chemistry is an experimental science, so saying it's not experimental is incorrect.

Exam Tip: Pay close attention to negative questions ("NOT true") and carefully evaluate each option based on factual knowledge from the chapter.

Question 3. Maharshi Charaka: Charaka Samhita, Maharshi Sushruta:
(a) Sushruta Samhita
(b) Charaka Shastra
(c) Vagbhata Samhita
(d) Sushruta Shastra
Answer: (a) Sushruta Samhita
In simple words: Maharshi Sushruta wrote the book called Sushruta Samhita, just like Maharshi Charaka wrote Charaka Samhita.

Exam Tip: Remember the specific works authored by each ancient Indian physician to accurately match them with their contributions.

Question 4. Some students in a school class are discussing mathematics. Who among them is speaking correctly?
Shreya: Bhaskaracharya wrote books named 'Lilavati Ganit' and 'Bijaganit'.
Yash: Bodhayana was the discoverer of the decimal system.
Manasi: Aryabhata is known as the 'father of mathematics'.
Hardik: India discovered the concept of zero \( (0) \).
(a) Yash
(b) Hardik
(c) Shreya
(d) Shreya, Manasi, Hardik
Answer: (d) Shreya, Manasi, Hardik
In simple words: Shreya is correct about Bhaskaracharya's books, Manasi is correct that Aryabhata is called the father of mathematics, and Hardik is correct that India discovered zero. Yash is wrong because Aryabhata, not Bodhayana, discovered the decimal system.

Exam Tip: For composite questions like this, evaluate each statement individually to determine its correctness before selecting the final option.

Question 5. The book written by Bhabhravya Panchala is ______.
(a) Chikitsasangraha
(b) Prajananashastra
(c) Kamasutra
(d) Yantra Sarvasva
Answer: (b) Prajananashastra
In simple words: Bhabhravya Panchala wrote a book called Prajananashastra.

Exam Tip: Remember the authors and their corresponding works, especially for lesser-known texts, to answer correctly.

Question 6. Who discovered the 'Brahmasiddhanta' system, which popularized the law of gravity in ancient India?
(a) Brahmagupta
(b) Vatsyayana
(c) Gritsamada
(d) Mahamuni Patanjali
Answer: (a) Brahmagupta
In simple words: Brahmagupta discovered 'Brahmasiddhanta', which helped explain the law of gravity in ancient India.

Exam Tip: Connect the specific text 'Brahmasiddhanta' and the concept of gravity with its author, Brahmagupta.

Question 7. State which of the following scriptures illustrates the principles of how to construct temples, palaces, stables, forts, etc., and in which direction they should be built.
(a) Chemistry
(b) Medicine
(c) Vastu Shastra
Answer: (c) Vastu Shastra
In simple words: Vastu Shastra is the ancient science that provides guidelines for designing and building structures, including their orientation and layout.

Exam Tip: Define Vastu Shastra by listing the types of structures it governs and its focus on directional and design principles.