CBSE Class 8 English Bibha Chowdhuri: The Beam of Light that Lit the Path for Women in Indian Science Worksheet Set 03

Fill in the Blanks

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.

Question. The vaccine was ________ through several clinical trials and results were recorded in those journals.
Answer: tested
Explanation: Before a medicine is given to everyone, scientists check and test it many times to make sure it is safe.

Question. Next, the spacecraft is ________ down as it nears the Moon's surface.
Answer: slowed
Explanation: A spacecraft must gently reduce its speed so that it can land softly without crashing on the Moon.

Question. Bibha Chowdhuri continued her research at institutions like the Physical Research Laboratory and the ________ Institute of Nuclear Physics in Kolkata.
Answer: Saha
Explanation: The Saha Institute is a famous science research centre in Kolkata where Bibha did important physics experiments.

Question. Finally, the rover is ________ to explore the surface and collect valuable data.
Answer: released
Explanation: The rover is a small robotic car that rolls out of the lander onto the dusty lunar ground to study rocks and soil.

Question. The phrase 'Bibha Chowdhuri's legacy survives on' suggests that women continue to break barriers and make progress for today and future generations.
Answer: lives
Explanation: A person's legacy lives on when the good things they did continue to motivate and help people long after they are gone.

Question. The amount of antibodies produced were ________ carefully to assess the effectiveness of the vaccine.
Answer: measured
Explanation: Scientists used special tools to count the tiny germ-fighting fighters inside the body called antibodies.

Question. After reaching the Moon's orbit, the spacecraft's trajectory is adjusted for landing.
Answer: path
Explanation: Space pilots and computers change the flying route of the rocket so it arrives at the exact right landing spot.

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.

Questions / Short Question Answers

Question. Define 'trailblazers' as used in the background of Bibha Chowdhuri's life.
Answer: 'Trailblazers' are people who are the first to do something innovative, paving the way for others, like Bibha Chowdhuri did for women scientists in India.
Explanation: Trailblazers are brave first-movers who build a path through the jungle so others can follow behind safely.

Question. When and where was Bibha Chowdhuri born?
Answer: Bibha Chowdhuri was born in 1913 in Kolkata, pre-independent India.
Explanation: She was born in Kolkata over a hundred years ago, long before India celebrated its first Independence Day.

Question. What does the expression 'defied the odds' mean in relation to Bibha Chowdhuri?
Answer: It means she achieved success in her scientific career despite facing many difficulties and societal challenges.
Explanation: It means winning and doing amazing things even when everything seemed stacked against you.

Question. Why is the mention of Patrick M.S. Blackett, a Nobel Laureate, meaningful in this extract?
Answer: The mention of Patrick M.S. Blackett is significant because it shows that someone as prominent and brilliant as him recognised her great mind and took her under his mentorship.
Explanation: One of the world's greatest scientists saw how bright Bibha was and gladly agreed to teach her.

Question. What was the former name of the star now called 'Bibha'?
Answer: The previous scientific name of the star was HD 86081.
Explanation: Before it was named Bibha, astronomers simply called it by a code number: HD 86081.

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 invisible energy beams flying from outer space to get her doctor's degree in England.

Question. What did Bibha Chowdhuri investigate at the Bose Institute?
Answer: Bibha Chowdhuri studied high-energy particle physics and cosmic rays at the Bose Institute.
Explanation: She used special photo plates to capture tracks of tiny particles coming from high up in the sky.

Question. What does the word 'Bibha' mean?
Answer: 'Bibha' means 'a beam of light'.
Explanation: Her name literally means a bright ray of shining light, just like the rays she studied.

Question. What is the full expansion of the acronym STEM?
Answer: Science, Technology, Engineering, and Mathematics.
Explanation: STEM stands for four school subjects that teach children how machines, numbers, and nature work.

Question. Name one key scientific centre in India where Bibha Chowdhuri worked.
Answer: Bibha Chowdhuri worked at the Tata Institute of Fundamental Research (TIFR), where she was the first woman faculty member.
Explanation: TIFR is a famous college of science in Mumbai where Bibha was the very first female professor.

Question. How was Bibha Chowdhuri honoured in the year 2020?
Answer: In 2020, the Government of India honoured her by declaring a chair professorship in her name.
Explanation: The Indian government created a special university teaching post named after Bibha to support new scientists.

Question. Who picked Bibha Chowdhuri to work at the TIFR?
Answer: Dr. Homi J. Bhabha personally selected her.
Explanation: Dr. Homi Bhabha was the father of India's nuclear science, and he chose Bibha himself because of her skill.

Question. What does Bibha Chowdhuri's nomination by Erwin Schrödinger reveal about her abilities?
Answer: Bibha Chowdhuri's nomination by Erwin Schrödinger highlights her brilliant mind and innovative scientific work.
Explanation: When a world-famous genius nominates you for a prize, it shows that your brainpower is truly extraordinary.

Question. Why is Dr. Ritu Karidhal Srivastava named the 'Rocket Woman of India'?
Answer: Dr. Ritu Karidhal Srivastava is called the 'Rocket Woman of India' because of her crucial contribution to the Mars Orbiter Mission and leadership role in lunar missions like Chandrayaan-2 and Chandrayaan-3.
Explanation: She earned this title because she successfully directed spacecraft journeys to Mars and the Moon.

Question. Why were there walls of segregation in science during Bibha's time?
Answer: Walls of exclusion were put up between women and men to keep women away from what were perceived as male-dominated fields.
Explanation: Unfair ideas in the old days made people think girls should only do housework instead of laboratory work.

Question. In which year did Bibha return to India from England?
Answer: She returned to India in the year 1949.
Explanation: She came back home two years after India became an independent nation to teach and do research.

Question. What what was the major contribution of the 50 women working for the Chandrayaan-3 expedition?
Answer: The development of autonomous systems for spacecraft and managing mission-critical operations was the major contribution of the 50 women working for Chandrayaan-3.
Explanation: They programmed the spacecraft's smart computer brain so it could land safely all by itself.

Question. How did Bibha Chowdhuri demonstrate persistence throughout her career?
Answer: Despite being overlooked for awards and working in a male-dominated field, Bibha Chowdhuri continued her scientific research relentlessly, setting an example of determination for others to emulate.
Explanation: She never let unfair treatment stop her; she showed up at the lab every single day and kept working hard.

Question. What does the line 'The stars are not meant to remain hidden permanently' mean?
Answer: It means that although Bibha Chowdhuri's contributions were overlooked for decades, true genius cannot stay forgotten forever, and her inspiring story has finally come into the light.
Explanation: Just like clouds eventually move away to show bright stars, the truth about Bibha's greatness was finally revealed.

Question. Which of the following was NOT an achievement of Bibha Chowdhuri? (Options: Leading the Chandrayaan-3 mission / The discovery of pi-mesons / Working at the Kolar Gold Mines / Earning a Ph.D. from the University of Manchester)
Answer: Leading the Chandrayaan-3 mission
Explanation: Chandrayaan-3 happened recently in 2023, many years after Bibha lived.

Question. Who mentored Bibha during her tenure at the Physical Research Laboratory?
Answer: Dr. Vikram Sarabhai mentored her.
Explanation: Dr. Vikram Sarabhai, the founder of India's space program, was her friendly senior advisor in Ahmedabad.

Question. What was Bibha's most remarkable scientific breakthrough?
Answer: Her most remarkable scientific discovery was her research on pi-mesons, a subatomic particle, which earned her a Nobel Prize nomination in 1950.
Explanation: She helped discover pi-mesons, which are tiny specks of matter smaller than atoms that help glue particles together.

Question. What can be inferred about the public view of women scientists in the 1940s from the title 'India's New Woman Scientist'?
Answer: The world was still doubtful about the capabilities of women scientists.
Explanation: Newspapers treated a woman scientist as a rare surprise because people doubted whether women could do science.

Question. What is one of the key benefits of AI in the medical sector?
Answer: Provides personalised treatments and faster diagnoses.
Explanation: Computers can help doctors quickly understand what illness a patient has so they can get healthy faster.

Question. How did AI play a vital role during the global pandemic?
Answer: AI assisted in speeding up the discovery of new medicines.
Explanation: Smart computer programs tested millions of medicine formulas in seconds so scientists could make vaccines faster.

Question. What example was given regarding AI's application in renewable energy?
Answer: AI is improving the performance of wind turbines and solar panels.
Explanation: Smart software turns solar panels toward the sun and adjusts windmills to produce more clean electricity.

Question. What service does AI offer to teachers in the field of education?
Answer: Helps teachers analyse student performance.
Explanation: AI helps teachers see which math problems or reading lessons children need extra help with.

Question. What is one of the user-friendly features that AI is enhancing for individuals with disabilities?
Answer: Improves speech recognition and voice command technologies.
Explanation: It helps computers understand spoken words so people who cannot type can easily use tablets and phones.

Question. Rewrite the experimental report using passive verbs: 'I conducted an experiment to investigate the effects of light on plant growth...'
Answer: An experiment was conducted to investigate the effects of light on plant growth. Various plants were placed under different light conditions and their growth was measured over several weeks. The height of each plant was tracked by daily recording of data. The results were analysed at the end of the experiment. It was found that the plants exposed to natural light grew significantly taller than those under artificial light. It was concluded that sunlight plays a crucial role in plant development. My findings were presented to the class. The importance of light in enhancing photosynthesis and overall plant health was highlighted.
Explanation: In science writing, passive voice keeps the focus on the scientific experiment rather than the person doing it.

Question. Arrange the following events from Bibha Chowdhuri's life in the correct order of chronology: (1) Star renamed 'Bibha', (2) First woman faculty at TIFR, (3) Born in pre-independent India, (4) Chair professorship declared, (5) Joined Manchester under Blackett, (6) Nominated for Nobel Prize.
Answer: 3 - 5 - 6 - 2 - 1 - 4
Explanation: First she was born (1913), then studied in Manchester, got nominated for the Nobel Prize (1950), joined TIFR, had a star named after her (2019), and finally received a professorship honour (2020).

Question. Why is Bibha Chowdhuri referred to as a 'beacon' and a 'beam of light' in the text?
Answer: The name 'Bibha' means 'a beam of light'. She is referred to as a 'beacon' because of her innovative work on cosmic rays and subatomic particles and her legacy as the first Indian female physicist who laid the foundation for future women scientists.
Explanation: She shone like a bright torch to help young girls see that they too could become great scientists.

Question. What moral lesson does the journey 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.
Explanation: Always do your best because you love learning, even if other people do not notice your hard work right away.

Question. What are some of the obstacles Bibha Chowdhuri faced as a woman scientist in her time?
Answer: She faced barriers to education, societal expectations, and lack of recognition. Her accomplishments were often overshadowed by male scientists, and she had to work harder for acknowledgment and acceptance.
Explanation: Society doubted women's intelligence back then, so she had to work twice as hard to earn respect in the lab.

Question. In what manners do the roles of women in modern ISRO missions reflect societal progression?
Answer: Women are now taking on leadership roles, managing mission-critical operations, and developing autonomous systems for spacecraft. This progression mirrors changing attitudes towards gender equality in STEM fields in India.
Explanation: It shows that India is changing for the better, giving women the power to steer big rockets and lead exploration teams.

Question. What can you say about the male researchers who helped a female physicist like Bibha Chowdhuri?
Answer: The male scientists who mentored and uplifted Bibha showed open-mindedness and willingness to allow capable women to contribute to science. They cared more about progress and scientific breakthroughs than illogical gender stereotypes.
Explanation: Kind mentors like Patrick Blackett, Homi Bhabha, and Vikram Sarabhai cared about talent, not whether a scientist was a man or a woman.

Question. How might this story help shape people's perception of the role of women in other traditionally male-dominated sectors?
Answer: It encourages students to be open-minded and leave behind outdated gender stereotypes. Young girls learn that they can achieve any dream, while young boys learn to support and respect equality in all professions.
Explanation: It teaches everyone that there are no such things as 'boy jobs' or 'girl jobs'—anybody can do anything if they work hard!