CBSE Class 8 English Bibha Chowdhuri: The Beam of Light that Lit the Path for Women in Indian Science Worksheet Set 04

Fill in the Blanks

Question. Bibha Chowdhuri is regarded as India's first female ________.
Answer: physicist
Explanation: A physicist is a scientist who studies how energy, light, and matter work in the universe. Bibha was the very first Indian woman to do this as a career!

Question. Last year, significant advancements in medical science were published in leading medical journals when a new vaccine for malaria was ________.
Answer: discovered
Explanation: When scientists invent or find a brand-new medicine, we say it was discovered.

Question. The stellar object 'HD 86081' in the constellation Leo is now called ________ in honour of Bibha Chowdhuri.
Answer: Bibha
Explanation: Astronomers named a real glowing star in the sky after Bibha to celebrate her wonderful scientific work.

Question. First, the spacecraft is ________ towards the Moon from the Earth.
Answer: launched
Explanation: When a rocket blasts off from the ground into space, it is launched.

Question. The quality that helped Bibha Chowdhuri to keep proceeding despite problems was her ________.
Answer: persistence
Explanation: Persistence means you never give up and keep trying your hardest, even when tasks get tough.

Question. During the trials, blood samples were ________ regularly from participants to monitor their immune response.
Answer: taken
Explanation: Doctors carefully collected small drops of blood from volunteers to see if the medicine was working safely.

Question. The phrase 'She has an eye for Cosmic Rays' indicates that she has a curious mind in the specialized field of Cosmic Rays.
Answer: niche
Explanation: Having "an eye" for something means you are naturally talented and smart at noticing special details.

Question. Bibha Chowdhuri's tale inspires young women to break barriers and follow their passions.
Answer: break
Explanation: Breaking barriers means proving that old, unfair rules cannot stop you from achieving your dreams.

True or False

Question. Bibha Chowdhuri accepted several national awards during her lifetime.
Answer: False
Explanation: Bibha was not given big national medals while she was alive, but today she is remembered as a hero of science.

Question. The expression 'beacon' describes Bibha Chowdhuri as someone who gives hope and encouragement.
Answer: True
Explanation: A beacon is like a bright lighthouse that shines light in the dark so others can find their way safely.

Question. Bibha Chowdhuri's primary research was in oceanic biology.
Answer: False
Explanation: Bibha did not study ocean animals; she studied physics and invisible rays from outer space called cosmic rays.

Question. Dr. Ritu Karidhal Srivastava is widely known as the 'Rocket Woman of India'.
Answer: True
Explanation: She earned this cool nickname because she helped design and guide major rocket missions to Mars and the Moon.

Question. The International Astronomical Union designated a star after Bibha Chowdhuri.
Answer: True
Explanation: The world's top astronomy group officially put her name on a shining star in the sky.

Question. Chowdhuri's contributions spanned across research institutes like the Physical Research Laboratory in Kolkata and the Saha Institute of Nuclear Physics in Ahmedabad is an accurate statement.
Answer: False
Explanation: The cities are swapped: the Physical Research Laboratory is in Ahmedabad, while the Saha Institute is located in Kolkata.

Question. The statement that Bibha Chowdhuri was the beacon, the 'beam of light' whose narrative continues to inspire young women, is an objective fact.
Answer: True
Explanation: Her true life story inspires thousands of young girls across India to dream of becoming scientists.

Vocabulary Activity - "Guess the Word"

Question. Replace the underlined phrase: A scientist who investigates matter, energy, light, etc.
Answer: physicist
Explanation: A physicist is a person who studies the rules of nature, such as gravity, light, and electricity.

Question. Replace the underlined phrase: They are considered to be the first creators to start the online markets.
Answer: pioneers
Explanation: Pioneers are the very first explorers who step forward to try something totally new.

Question. Replace the underlined phrase: Most of my friends are my classmates and are of my age.
Answer: peers
Explanation: Peers are people who are around the same age as you, like your classmates in school.

Question. Replace the underlined phrase: We first welcomed all the famous and significant individuals in folk song for the award ceremony.
Answer: luminaries
Explanation: Luminaries are famous, brilliant, and respected people who inspire everyone around them.

Question. Replace the underlined phrase: My brother finally succeeded in his business because of his continuous efforts and grit.
Answer: persistence
Explanation: Persistence means working hard day after day without giving up when problems appear.

Question. Replace the underlined phrase: We should remove all the things that obstruct our way in achieving success.
Answer: barriers
Explanation: Barriers are hurdles or walls that make it difficult to move forward toward your goal.

Question. Add the appropriate suffix (-ship, -ment, or -hood) to create a noun: citizen + suffix = ............
Answer: citizenship
Explanation: Citizenship means being an official and legal member of a country.

Questions / Short Question Answers

Question. Who was Bibha Chowdhuri and why is she important in Indian science?
Answer: Bibha Chowdhuri was India's first woman physicist who excelled in particle physics and became a pioneer for women in science.
Explanation: She was the very first woman in India to become a physicist, opening the door for many other girls to study science.

Question. What is the name of the star that was christened in Bibha's honour?
Answer: The star HD 86081 in the constellation Leo was officially named "Bibha".
Explanation: International space scientists named a real star in the sky "Bibha" so her name would be remembered forever.

Question. Why is Bibha Chowdhuri regarded as a pioneer?
Answer: Bibha is described as a pioneer because she pursued science when women had little access to education. She overcame barriers to excel in particle physics and cosmic ray research. Her contributions laid the foundation for women in Indian science.
Explanation: A pioneer is someone who steps forward first; Bibha studied physics when hardly any women were allowed into labs.

Question. Why is the title 'Bibha Chowdhuri: The Beam of Light that Lit the Path for Women in Indian Science' considered suitable?
Answer: The title is suitable because it highlights her role as a pioneer. She was one of the first women in India to break barriers in physics and inspire future generations. Though her brilliance was overlooked during her lifetime, her story now lights the path for women scientists leading India's modern space missions. Like a "beam of light," her contribution guides and inspires.
Explanation: Just like a bright flashlight helps you walk down a dark hallway, Bibha's hard work guided other girls into science.

Question. What research did Bibha conduct at the University of Manchester?
Answer: Bibha pursued research on cosmic rays under Nobel Laureate Patrick M.S. Blackett, earning her Ph.D. in physics.
Explanation: She studied mysterious energy rays that fall to Earth from deep outer space to earn the highest university degree.

Question. Name at least two research institutes where Bibha Chowdhuri worked in India and describe the aim of her research there.
Answer: Bibha Chowdhuri worked at the Tata Institute of Fundamental Research (TIFR) in Mumbai and the Physical Research Laboratory (PRL) in Ahmedabad (as well as the Saha Institute and Bose Institute). Her research focused on cosmic rays, subatomic particle detection, and nuclear emulsions.
Explanation: She worked in India's top scientific laboratories to understand the tiniest building blocks that make up everything around us.

Question. What moral message does the life of Bibha Chowdhuri teach students?
Answer: The life of Bibha Chowdhuri teaches students resilience, dedication, and courage to pursue dreams despite obstacles. Her story shows that recognition may be delayed, but true contribution never fades. She inspires students to value knowledge, break social barriers, and contribute selflessly to society.
Explanation: It teaches children to keep studying what they love and never give up, even if people don't applaud them right away.

Question. For what finding was Bibha Chowdhuri nominated for the Nobel Prize?
Answer: Bibha Chowdhuri was nominated for the Nobel Prize for her work on the discovery of pi-mesons, a subatomic particle.
Explanation: She helped discover tiny particles called pi-mesons that act like super-glue inside an atom.

Question. What title did newspapers give Bibha Chowdhuri after she obtained her Ph.D.?
Answer: Newspapers gave her the title: "India's New Woman Scientist—She has an eye for Cosmic Rays".
Explanation: News reporters praised her because she had a special talent for spotting energy tracks from outer space.

Question. Why was Bibha Chowdhuri's Nobel nomination momentous?
Answer: The Nobel nomination by Erwin Schrödinger in 1950 was significant because it recognised her groundbreaking research on pi-mesons. Although she did not win, it reflected her global scientific stature at a time when women were often overlooked.
Explanation: Being nominated showed that the smartest scientists in the whole world thought her discoveries were extraordinary.

Question. The text states the journey from Bibha's era to today has been 'long and arduous'. Using examples from the text, explain the challenges she faced and contrast them with the recognition women in ISRO receive today.
Answer: In Bibha's era, women had very limited access to higher education and were expected to conform to traditional domestic roles. Entering the male-dominated field of physics required immense grit. Despite conducting foundational research on cosmic rays and pi-mesons, Bibha received no awards or public acclaim during her lifetime. In contrast, modern Indian women scientists at ISRO are celebrated nationally and globally. Leaders like Dr. Ritu Karidhal Srivastava and numerous female directors play prominent, publicly acknowledged roles in high-profile missions like the Mars Orbiter Mission and Chandrayaan-3.
Explanation: Long ago, Bibha had to work alone without medals or cheers, but today women scientists at ISRO are celebrated heroes on television!

Question. How was Bibha Chowdhuri recognized posthumously in 2019?
Answer: In 2019, the International Astronomical Union honoured Bibha by naming a star in the Leo constellation after her.
Explanation: "Posthumously" means after someone has passed away; scientists honoured her memory by naming a star after her.

Question. Which of the following was NOT an accomplishment of Bibha Chowdhuri?
Answer: Leading the Chandrayaan-3 mission
Explanation: Chandrayaan-3 is a modern Moon mission led by today's ISRO scientists decades after Bibha passed away.

Question. How did Bibha Chowdhuri contribute to Indian science after her homecoming in 1949?
Answer: After returning to India, Bibha became the first woman faculty at TIFR, selected by Homi Bhabha. She worked at PRL with Vikram Sarabhai and at the Saha Institute of Nuclear Physics. Her research continued in cosmic rays and subatomic particles, shaping India's scientific progress.
Explanation: She returned to India and teamed up with great scientists to build advanced laboratories for studying space rays.

Question. Why is Bibha Chowdhuri deemed a pioneer and a trailblazer?
Answer: She is considered a pioneer and trailblazer because she was India's first woman physicist, breaking social barriers to conduct groundbreaking research in particle physics and cosmic rays.
Explanation: She walked where no Indian woman had walked before, proving that girls can be world-class scientists.

Question. What broader social message does Bibha Chowdhuri's story express?
Answer: Her story conveys that gender should not restrict opportunities in science. It shows that determination and brilliance can break barriers. It inspires young women to pursue STEM and challenges stereotypes of male dominance in scientific fields.
Explanation: It teaches us that science is for everyone—both boys and girls can solve mysteries of the universe.

Question. How do women in ISRO today mirror Bibha Chowdhuri's legacy?
Answer: Women in ISRO reflect Bibha's legacy by leading missions like the Mars Orbiter Mission and Chandrayaan-3, proving women's capabilities in STEM.
Explanation: Modern women engineers direct huge rocket flights to space, showing the same courage Bibha had long ago.

Question. How many women contributed to the Chandrayaan-3 mission, and what were some of their responsibilities?
Answer: Over 50 women contributed to Chandrayaan-3, serving in vital roles including deputy project directors, operations directors, and managing mission navigation and landing systems.
Explanation: More than fifty women helped design the computer controls, cameras, and landing systems to touch down on the Moon.

Question. How did Bibha Chowdhuri's legacy gain recognition after her passing?
Answer: After her death in 1991, her contributions were gradually acknowledged. In 2019, a star was named after her, and in 2020, a chair professorship was declared in her honour. These tributes symbolised her lasting influence on Indian science.
Explanation: Years after her death, universities and astronomers honored her by naming a star and a special professor position after her.

Question. The text says that the success of women in Chandrayaan-3 is 'built upon the shoulders of pioneers like Bibha Chowdhuri'. Explain this statement. How did her work and struggles prepare the way for future generations?
Answer: This statement means that today's female scientists succeed because early trailblazers like Bibha Chowdhuri broke down barriers when women were kept away from science. By becoming India's first female physicist, earning a Ph.D. abroad, and becoming the first woman faculty member at TIFR, Bibha proved women's capability in research. Her courage established credibility and opened doors in Indian scientific institutions, preparing the way for women to lead space missions today.
Explanation: When someone clears a tough path through a jungle first, it allows all the people who come next to walk easily.