Important Question For All Chapters – English Class 7
Short Questions
1. Who was Dr. A. P. J. Abdul Kalam?
- He was the President of India from 2002 to 2007 and a scientist.
2. What is the Raman Effect?
- It is a discovery in optics related to the scattering of light.
3. Where was Dr. C. V. Raman born?
- He was born in Tiruchirapalli, India.
4. When was the Raman Effect announced?
- It was announced in March 1928.
5. Why is 28 February celebrated as National Science Day?
- It marks the discovery of the Raman Effect.
6. What inspired Raman to study sound and light?
- His interest in acoustics and optical science.
7. Which instruments did Raman study for their melodious sound?
- The mridangam and the tabla.
8. What was the cost of Raman’s experimental equipment?
- It cost only 200 rupees.
9. When did Raman win the Nobel Prize for Physics?
- He won it in 1930.
10. What does a scientist need to prove a theory?
- Experiments and scientific evidence.
11. What does the sky’s blue color indicate according to Raman?
- It is due to the scattering of light.
12. Which society elected Raman as a Fellow?
- The Royal Society in 1924.
13. What are good scientists restless with?
- Questions and curiosity.
14. Who inspired young Indians through books and ideas?
- Dr. A. P. J. Abdul Kalam.
15. What does Raman believe about scientists’ work?
- They should find answers in nature, not just in labs.
Long Questions
1. Why is Dr. A. P. J. Abdul Kalam famous?
- Dr. A. P. J. Abdul Kalam is famous for his contributions to scientific research, modernization of defense technology in India, and his inspirational books for youth.
2. What inspired Dr. C. V. Raman to discover the Raman Effect?
- The blue color of the sea and the sky inspired him to question and explore the science behind it, leading to his discovery.
3. How did C. V. Raman’s discovery help science?
- His discovery helped determine the internal structures of about 2000 chemical compounds and advanced optical science.
4. What qualities make a great scientist according to Raman?
- Independent thinking, hard work, curiosity, and seeking answers in nature are qualities of a great scientist.
5. Why was 28 February declared as National Science Day?
- It commemorates the day in 1928 when C. V. Raman announced his discovery of the Raman Effect.
6. What does the story teach about using resources wisely?
- C. V. Raman proved his theory using equipment costing only 200 rupees, showing that great discoveries need ideas, not expensive tools.
7. What is the importance of the Raman Effect?
- It is a milestone in physics, helping scientists understand light scattering and its applications in various fields.
8. What challenges did C. V. Raman overcome to succeed?
- He achieved greatness through relentless questioning and research, proving his theory despite limited resources.
Leave a Reply