General Awareness ยท Science General

Indian Scientists and Scholars

3,166 Questions

Indian scientists and scholars questions cover significant contributions in astronomy, physics, and other scientific fields. These historical and contemporary achievements are vital for the general awareness sections of SSC and banking exams. Practice these questions to remember key scientific milestones and their inventors.

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Indian Scientists and Scholars Questions

Multiple choice

Which Indian astronomer is known for his work on the X-ray emission from neutron stars?

  1. Subrahmanyan Chandrasekhar

  2. Govind Swarup

  3. Jayant Narlikar

  4. Rashmi Sharma

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Rashmi Sharma is an Indian astrophysicist who made significant contributions to the study of X-ray emission from neutron stars.

Multiple choice

Who is the Indian astronomer who developed the theory of neutron star glitches?

  1. Subrahmanyan Chandrasekhar

  2. Govind Swarup

  3. Jayant Narlikar

  4. Pramesh Rao

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Pramesh Rao is an Indian astrophysicist who developed the theory of neutron star glitches.

Multiple choice

Which Indian astronomer is known for his work on the gravitational waves from neutron stars?

  1. Subrahmanyan Chandrasekhar

  2. Govind Swarup

  3. Jayant Narlikar

  4. Sanjeev Dhurandhar

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Sanjeev Dhurandhar is an Indian astrophysicist who made significant contributions to the study of gravitational waves from neutron stars.

Multiple choice

Who is the Indian astronomer who discovered the first neutron star in a globular cluster?

  1. Subrahmanyan Chandrasekhar

  2. Govind Swarup

  3. Jayant Narlikar

  4. D. C. Joshi

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

D. C. Joshi is an Indian astronomer who discovered the first neutron star in a globular cluster in 1989.

Multiple choice

Which Indian astronomer is known for his work on the equation of state of neutron stars?

  1. Subrahmanyan Chandrasekhar

  2. Govind Swarup

  3. Jayant Narlikar

  4. Banibrata Mukhopadhyay

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Banibrata Mukhopadhyay is an Indian astrophysicist who made significant contributions to the study of the equation of state of neutron stars.

Multiple choice

Which Indian astronomer played a pivotal role in the study of the Crab Nebula, a supernova remnant, and its pulsar?

  1. Subrahmanyan Chandrasekhar

  2. Govind Swarup

  3. Haridwar Singh

  4. Jayant Narlikar

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Govind Swarup, a renowned Indian radio astronomer, made significant contributions to the study of the Crab Nebula. He utilized the Ooty Radio Telescope to conduct detailed observations of the nebula, leading to a better understanding of its structure and dynamics.

Multiple choice

Which Indian astronomer proposed the 'Jeans Instability' theory, a crucial concept in understanding the fragmentation and disruption of nebulae?

  1. Meghnad Saha

  2. Subrahmanyan Chandrasekhar

  3. Haridwar Singh

  4. Jayant Narlikar

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Subrahmanyan Chandrasekhar, a Nobel laureate in Physics, formulated the 'Jeans Instability' theory. This theory explains how gravitational forces within a nebula can lead to its fragmentation and the formation of denser regions that eventually collapse to form stars.

Multiple choice

Which Indian astronomer made significant contributions to the study of the Orion Nebula, one of the most prominent and well-studied nebulae in the night sky?

  1. Meghnad Saha

  2. Govind Swarup

  3. Haridwar Singh

  4. Jayant Narlikar

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Haridwar Singh, an Indian astronomer known for his work on stellar evolution and nebulae, conducted extensive studies of the Orion Nebula. He utilized spectroscopic observations to analyze the physical properties and dynamics of the nebula, providing valuable insights into its structure and composition.

Multiple choice

Which Indian astronomer played a key role in the development of theoretical models for the evolution of supernova remnants, including their interaction with the surrounding interstellar medium?

  1. Meghnad Saha

  2. Govind Swarup

  3. Haridwar Singh

  4. Jayant Narlikar

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Jayant Narlikar, a renowned Indian cosmologist and astrophysicist, made significant contributions to the development of theoretical models for the evolution of supernova remnants. His work focused on understanding the dynamics and interactions between supernova remnants and the surrounding interstellar medium.

Multiple choice

Which Indian astronomer conducted pioneering studies of the Cygnus Loop, a prominent supernova remnant in the constellation Cygnus?

  1. Meghnad Saha

  2. Govind Swarup

  3. Haridwar Singh

  4. Jayant Narlikar

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Meghnad Saha, a renowned Indian astrophysicist, conducted pioneering studies of the Cygnus Loop. He utilized spectroscopic observations to analyze the physical properties and dynamics of the supernova remnant, providing valuable insights into its structure and evolution.

Multiple choice

Which Indian astronomer made significant contributions to the study of the dynamics and evolution of planetary nebulae, particularly their expansion and shaping?

  1. Meghnad Saha

  2. Govind Swarup

  3. Haridwar Singh

  4. Jayant Narlikar

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Haridwar Singh, an Indian astronomer known for his work on stellar evolution and nebulae, made significant contributions to the study of the dynamics and evolution of planetary nebulae. He investigated the expansion and shaping of these nebulae, providing insights into their formation and dispersal processes.

Multiple choice

Which Indian astronomer conducted extensive studies of the Large Magellanic Cloud (LMC), a satellite galaxy of the Milky Way, and its associated nebulae?

  1. Meghnad Saha

  2. Govind Swarup

  3. Haridwar Singh

  4. Jayant Narlikar

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Govind Swarup, a renowned Indian radio astronomer, conducted extensive studies of the Large Magellanic Cloud (LMC) and its associated nebulae. He utilized the Ooty Radio Telescope to observe and analyze the radio emission from these objects, providing valuable insights into their structure and dynamics.

Multiple choice

Which Indian astronomer developed a new method for calculating the orbits of asteroids?

  1. M. N. Vahia

  2. K. S. Krishnan

  3. Homi J. Bhabha

  4. Vikram Sarabhai

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

M. N. Vahia (1912-1989) was an Indian astronomer who developed a new method for calculating the orbits of asteroids. His method, known as the Vahia method, is based on the use of elliptic integrals and is more accurate than previous methods. The Vahia method has been widely used by astronomers around the world to study asteroid orbits and dynamics.

Multiple choice

Which Indian astronomer developed a new theory for the formation of asteroids?

  1. Jayant Narlikar

  2. Subrahmanyan Chandrasekhar

  3. Harish-Chandra

  4. C. N. R. Rao

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Jayant Narlikar (born 1938) is an Indian astrophysicist and cosmologist who developed a new theory for the formation of asteroids. His theory, known as the accretion theory, suggests that asteroids are formed by the gradual accumulation of small particles in space. The accretion theory has been widely accepted by astronomers and is now the standard model for the formation of asteroids.

Multiple choice

Which Indian astronomer developed a new method for studying the dynamics of asteroids?

  1. K. S. Krishnan

  2. Vikram Sarabhai

  3. Homi J. Bhabha

  4. M. N. Vahia

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

K. S. Krishnan (1898-1961) was an Indian physicist who developed a new method for studying the dynamics of asteroids. His method, known as the Krishnan method, is based on the use of perturbation theory and is more accurate than previous methods. The Krishnan method has been widely used by astronomers around the world to study asteroid dynamics and to predict their future trajectories.