Andhra Pradesh Board Class 7 English C.V. Raman, The Pride of India Question and Answers
Andhra Pradesh SCERT 7th Class English Solutions Unit 2 Chapter 2A C.V. Raman, the Pride of India Question and answers. Students who are searching for Andhra Pradesh Class 7 English Chapter 2A can find here Solution of this chapter.
|Andhra Pradesh (AP Board)|
Look at the pictures and answer the questions that follow.
1.) Can you name these scientists?
Ans: A.P.J. Abdul Kalam, C.V. Raman, Srinivasa Ramanujan, Albert Einstein, Isaac Newton, Sir Alexander Fleming.
2.) Tell your class what you know about them.
Ans: A.P.J. Abdul Kalam succeeded K. R. Narayanan as India’s 11th President. He won the 2002 presidential election with 922,884 electoral votes, defeating Lakshmi Sahgal’s 107,366 votes. His tenure was from July 25, 2002 until July 25, 2007. During his presidency, he was lovingly referred to as the People’s President.
C.V. Raman, an Indian scientist, was brilliant and determined from of the beginning, and obtaining the Physics Nobel Prize was not so much a vague ambition as a career plan. Following his discovery of a light dispersion phenomena that has since evolved into a crucial characterization tool in materials research, he was the initial racial minority and the first Asian to earn the honor.
Srinivasa Ramanujan was among India’s leading mathematical minds. He contributed extensively to the research on effective of mathematics and experimented on elliptical features, continuing fractions, and infinite series. Ramanujan’s personal research on cumulative sum and products of hypergeometric series has resulted in significant advancement.
Albert Einstein is widely regarded as being one of the early twentieth century’s most significant scientists. His research continues to aid astronomers in their investigations of topics ranging from gravitational waves to Mercury’s orbit. Even individuals who do not comprehend the underlying physics are familiar with the physicist’s calculation that contributed special relativity, E = mc2.
Sir Isaac Newton made substantial contributions to science throughout his lifetime. He created calculus and offered a thorough grasp of optics (opens in new tab). But his most important contribution was in the field of forces, notably the establishment of a universal law of gravity and his laws of motion.
Alexander Fleming, full name Sir Alexander Fleming, was a Scottish bacteriologist best known for developing penicillin. Fleming was a technical prodigy with a keen sense of observation. His studies on chronic wounds and proteolytic enzymes, an antimicrobial enzyme present in sweat and spit, cemented his place in bacteriology history. But it was his 1928 discovery of penicillin, which sparked the antibiotic revolution, that cemented his legacy.
3.) Are scientists special people? How?
Ans: Yes, they are distinct in their clothes, appearance, and thoughts. They don’t comprehend or participate in politics and they spent the most of their time studying science.
4.) Do you want to be a scientist? Why?
Ans: Yes, I am interested in becoming a scientist. Science is my favourite topic. I’d want to do astrophysics study and try to make a new invention for the mankind.
5.) How many of them received the Nobel Prize?
Ans: C.V. Raman, Albert Einstein and Har Gobind Khorana received the Nobel Prize.
6.) Who was the first Indian scientist that received the Nobel Prize?
Ans: In 1930, Sir Chandrasekhara Venkata Raman became the first Indian to earn the Nobel Prize in Physics. On February 28, 1928, he received an award for discovering a novel electromagnetic impact. The ‘Raman effect’ refers to the shift in wavelength of light that happens when a laser energy is diverted by activated molecules.
I.) Answer the following questions.
1.)Why was Raman happy when he learnt that Professor Compton had won theNobel Prize?
Ans: When Raman learned that Professor Compton had received the Nobel Prize, he was overjoyed since everything Prof. Compton intended to establish had been proven, and Raman believed that he would likewise succeed in his endeavour.
2.) What does the “Compton Effect” tell us?
Ans: The ‘Compton Effect’ states that as X-rays move through matter, its nature changes. The type of stuff affected the alteration.
3.) What was Raman’s advice to young scientists?
Ans: C.V. Raman advised young scientists to explore about them and not restrict themselves to their laboratory. He claimed that the core of science is independent thought and hard labour, rather than equipment.
4.) Which paragraph tells about the ill health of C.V. Raman?
Ans: C.V. Raman’s illness is described in paragraph No. 7 of the lecture.
5.) What was the challenging situation when Raman started his experiment on light?
Ans: Raman’s laboratory did not have sophisticated equipment when he began his light experiment. However, he was convinced that he could make the finding by modifying his experiment. Raman achieved the finding despite having only Rs. 200 in equipment and insufficient facilities.
6.) What was the unseen force working behind Raman for reaching great heights?
Ans: Raman’s confidence, determination, and hard work in what he attempted to find were the hidden forces that propelled him to high heights. His belief that he might find with few changes to his equipment and by using the restricted resources made him extremely excellent.
7.) What was “Raman Effect”?
Ans: The ‘Raman Effect’ said that as light passes through a transparent material, its nature changes. It was the result of his newly discovered radiation. It detailed the characteristics of a light beam travelling through a chemical fluid. That is how it got renowned.
*8.) If A.H. Compton had not discovered the Compton Effect, do you think Ramanwould have discovered the Raman Effect? Give your reasons.
Ans: Yes Indeed, although if A.H. Compton did not have the “Compton Effect,” Raman would have had it since Raman was a highly positive, self-assured, and determined scientist. He was not reliant on his tools. He was not isolated in his laboratory. He was self-sufficient and competent.
9.) In what way was Raman different from other Indian scientists? List them andjustify your answer.
Ans: Other Indians seek high-tech instruments to conduct out their research. They are confined to their laboratory. C.V. Raman, on the other hand, was not reliant on technology. He lacked advanced equipment. He did not remain confined to his laboratory. Unlike others, he was hardworking and confident, and he thought for himself and observed the world around him.
*10.) If you were a scientist, what would you like to invent / discover?
Ans: If I was a scientist, I would have invented a car that would fly.
II.) Say whether the following statements are true or false. Correct the false statements.
1.) C.V. Raman was born in Calcutta. – False
2.) The Compton Effect was a discovery made by C.V.Raman. – False
3.) Raman’s mother was a college physics teacher. – False
4.) Raman was an average student at school. False
5.) Raman studied how the drum could produce music. – False
6.) Raman spent only two hundred rupees to win the Nobel Prize. – True
7.) Raman was only 42 when he won the Nobel Prize. – False
1.) Tiruchirapalli is where C.V. Raman was born.
2.) Professor Compton discovered what is known as the Compton Effect.
3.) Raman’s father taught college physics.
4.) Raman was an outstanding student at school.
5.) Raman investigated how instruments such as the violin might make music.
I.) The following sentences are from your lesson. Read them carefully and tick the correct meaning of the underlined word in each sentence.
1.) His parents were keen to send him abroad for higher studies.
(a) particular (b) eager (c) worried
Ans. – b
2.) The world hailed the discovery as the ‘Raman Effect’.
(a) admired (b) called (c) thought
Ans. – a
3.) In his youth Raman was mainly interested in acoustics.
(a) primarily (b) simply (c) certainly
Ans. – a
4.) The British made Raman a knight of the British Empire.
(a) appointed (b) managed (c) placed
Ans. – a
5.) Raman passed away on November 21, 1970.
(a) was killed (b) died (c) left
Ans. – b
II.) Read the following sentence. Raman was equally delighted. The underlined word ‘delighted’ is a verb and has been used to express a feeling of joy or happiness. Its noun form is ‘delight.’ Now, look at the following verbs and write their corresponding noun forms.
Now fill in the blanks with the suitable noun forms of the underlined words in each sentence.
III.) (1) Read the following sentence and notice the underlined part. Raman stayed in the country to do the M.A. course. The underlined letters in capitals denote an abbreviation. The full form of this abbreviation is ‘Master of Arts’. Here is a list of some common abbreviations. Write their full forms.
|B.A.||Bachelor of Arts|
|D.V.D.||Digital Versatile Disc/ Digital Video Disc|
(2.) Read the following sentence and notice the underlined word. He used to spend his hours after office in the lab. The underlined word “lab” is the short form of “laboratory.” Look at the following list of short forms and write their full forms. The first one is done for you. (Use a dictionary)
Short form of the word Full form of the word
Bike bicycle, motor bike
IV.) In the paragraph 4 you have learnt that ‘optics’ is the study of light. Do you know the word for the study of living beings? It is ‘biology’. It comes from ‘bio’ (means ‘life’) + ‘logus’ / ‘logy’ (means ‘study or science’). So the suffix ‘-logy’ adds the meaning ‘the study of’.
Guess the meanings of the words under Column A and match them with the phrases under Column B.
I.) Read the following sentences from your lesson and observe how the underlined words are used before dates, years and the names of places.
Now fill in the blanks with ‘in’, ‘on’ and ‘at’.
III.) List 20 phrases from the text that begin with ‘a’/ ‘an’ or ‘the’. Then put 1,2, 3(a), 3(b), 3(c), or 3(d) against them depending on how ‘a’/ ‘an’ or ‘the’ is used. One is done for you. an old building – 2 Now fill in the blanks with ‘a’, ‘an’ or ‘the’.
I.) Write a paragraph on J.C. Bose using the hints given below. You must use the right linkers to join the sentences.
J.C. Bose (Jagadish Chandra Bose) was a well-known Indian scientist. He was born on September 30, 1858.J.C. Bose attended Calcutta’s St. Xavier’s School. He afterwards travelled overseas to further his education. In 1885, he returned to India. He wrote a monograph regarding the response of the living and the non-living. In 1920, he was elected as a Fellow of the Royal Society. In 1895, J.C. Bose devised wireless telegraphy. He demonstrated that plants had life. J.C. Bose designed the Crescograph, a device that measures plant growth.In Calcutta, J.C. Bose established the Bose Institute. He spent the most of his life studying plants. J.C. Bose died on November 23rd, 1937.
II.) The passage given below has some errors in the use of capital letters, verbs, prepositions and articles. Edit the passage by underlining the incorrect parts and writing them correctly over the space available. The first one is done for you.
Answer: The wrong sections of the provided passage have been highlighted. The passage with no incorrect lines is given below, which are highlighted.
Raman was born on November 7, 1888 at Tiruchirapalli in Tamil Nadu. He finished his M.A. course at Presidency College in Chennai. He became a member of the Indian Association for Cultivation of Science. He took up an administrative job in the Finance Ministry in Calcutta. He was elected to the Royal Society of London in 1924 and the British Government made him a knight of the British Empire in 1929. He was the first Indian scholar who studied wholly in India and received the Nobel Prize.
I.) Study the pie charts and answer the questions given below them.
1.) Which of the following constitute most of the weight in the human body?
(a) water (b) proteins (c) dry elements (d) bones
2.) Which of the following statements is correct?
(a) Proteins constitute 11 per cent of the human body.
(b) Dry elements constitute 15 per cent of the human body.
(c) Hormones, enzymes and other proteins constitute 2/5 of the human body.
Answer: (c) Hormones, enzymes and other proteins constitute 2/5 of the human body.
3.) If a person’s weight is 100 kilograms, how much do his bones weigh?
Ans: 20 Kgs
4.) If the proteins in a person weigh 12 kilograms, what will be his weight?
Answer: 50 Kgs
5.) Are the bones in our body heavier than the water in our body? Support your answer.
Answer: No, they are not. 65 percent of our weight is made up by water.
LISTENING AND SPEAKING
Your teacher will read the passage ‘The Inventor of Inventors.’ Listen carefully and answer the questions given below:
I.) Say whether the following statements are true or false.
1.) When Edison was twelve, he established a school. – False
2.) Edison discovered an important scientific principle known as the
Edison Effect. – True
3.) Edison was a poor observer. – False
4.) Edison’s father was a school teacher. False
5.) Edison loved to mix liquids and powders to observe the reaction. True
II.) Here is a list of inventions. Put a (✓) against them if it was invented by Edison.
Answers: Inventions made by Edison are: light bulb, photograph, kinetograph, power generator.