Modern Scientists — Set 2
Inventions · आधुनिक वैज्ञानिक · Questions 11–20 of 60
Which Indian mathematician is famous for his contributions to number theory and infinite series without formal training?
Correct Answer: A. Srinivasa Ramanujan
Srinivasa Ramanujan made extraordinary contributions to mathematical analysis and continued fractions. He was invited to Cambridge University by G.H. Hardy after sharing his original theorems. His birthday, December 22, is celebrated as National Mathematics Day in India.
Which scientist served as the long-time Chairman of ISRO and oversaw the development of the SLV-3 and PSLV?
Correct Answer: C. Satish Dhawan
Satish Dhawan is credited with steering the Indian space program through its most critical experimental phase. The space center at Sriharikota was renamed the Satish Dhawan Space Centre in his honor. He emphasized the application of space technology for rural education and development.
Who is known as the 'Birdman of India' for his systematic surveys of Indian birds?
Correct Answer: D. Salim Ali
Salim Ali was an ornithologist whose work was instrumental in the conservation of wildlife and the establishment of bird sanctuaries. He wrote the famous book 'The Book of Indian Birds'. He was the first Indian to receive the J. Paul Getty International Prize for Wildlife Conservation.
Jagadish Chandra Bose is a pioneer in the study of which technology along with plant physiology?
Correct Answer: B. Radio and microwave optics
J.C. Bose was among the first to demonstrate wireless signaling using radio waves. He also invented the crescograph to measure the growth of plants and prove they have feelings. He is considered the father of Bengali science fiction as well.
Which Indian scientist won the Nobel Prize in Chemistry in 2009 for his studies on the ribosome?
Correct Answer: D. Venkatraman Ramakrishnan
Venkatraman Ramakrishnan mapped the structure of the ribosome at an atomic level using X-ray crystallography. This work is essential for understanding how DNA instructions are translated into life. He also served as the President of the Royal Society in London.
Which scientist is recognized as the 'Father of Indian Paleobotany'?
Correct Answer: B. Birbal Sahni
Birbal Sahni studied the fossils of the Indian subcontinent and established the Birbal Sahni Institute of Palaeobotany in Lucknow. He researched the plants of the Rajmahal Hills and their evolutionary history. He was also an expert in numismatics, the study of coins.
P.C. Mahalanobis is best known for his contribution to which field in India?
Correct Answer: B. Statistics and Economics
He founded the Indian Statistical Institute (ISI) and developed the 'Mahalanobis distance' measure. He was a key member of the first Planning Commission and designed the second five-year plan. His birthday, June 29, is celebrated as National Statistics Day.
Which scientist was the first Director General of the Council of Scientific and Industrial Research (CSIR)?
Correct Answer: B. Shanti Swarup Bhatnagar
Shanti Swarup Bhatnagar was a pioneer in the field of magneto-chemistry. He was instrumental in building the network of national laboratories across India after independence. The prestigious 'Bhatnagar Prize' for science is named after him.
Who is the first woman to head a missile project in India, known as the 'Missile Woman'?
Correct Answer: C. Tessy Thomas
Tessy Thomas was the project director for the Agni-IV and Agni-V missile systems. She is a prominent scientist at the Defence Research and Development Organisation (DRDO). She has broken significant gender barriers in the field of strategic defense research.
Which scientist is known for the discovery of 'Cosmic Ray Showers' and founded the Physics Department at IISc?
Correct Answer: D. Homi J. Bhabha
Homi Bhabha did pioneering work in cosmic radiation and the creation of electron-positron pairs. He became the first chairman of India's Atomic Energy Commission in 1948. His legacy includes the development of the nuclear research center at Trombay.