14 extractive question-and-answer pairs built from Our Units of Measurement | School Science, published by ejournals.ncert.gov.in. Source-evidenced topics include prof. r.k. pathria, statistical mechanics, length, time, mass, thermometry, calorimetry, photometry. Every answer is a verbatim span of text the source prints, and each row carries the passage it sits in, its offset in that passage, the source quote, the page and the location in the document, so any row can be checked against the original. Question types in the export: 5 factual, 5 list, 3 summary, 1 definition. 9 of the 14 pairs (64.3%) ask explanatory questions; the remaining 5 are factual or table-based questions. 100.00% of rows pass the corpus quality gate.
This dataset contains 14 question-and-answer pairs derived from the 'Our Units of Measurement' series published by NCERT's School Science journal. The questions cover topics such as fundamental units in physics, the work of Prof. R.K. Pathria, and the historical development of measurement systems. The dataset includes explanatory, factual, and list-based questions, with answers sourced directly from the publication. Prof. Pathria's contributions to theoretical physics and his series of articles on measurement units are central themes.
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import desidata
df = desidata.load("ejournals-ncert-gov-in-133468c17e7805fd7f1131ce00a88cbd")
df.head()First 10 of 14 rows
| question | answer | context | answer_start | question_type | knowledge_quality_score | source_document | source_quote | source_page | source_location | confidence | validation_status |
|---|---|---|---|---|---|---|---|---|---|---|---|
| What is Pathria? | an eminent theoretical physicist, known for his work on superfluidity in liquid helium and phase transitions | R.K. Pathria is an eminent theoretical physicist, known for his work on superfluidity in liquid helium and phase transitions. The book “Statistical Mechanics” authored by him still continues to be a popular title among undergraduates and is an international bestseller on this subject. | 16 | definition | 0.980 | https://ejournals.ncert.gov.in/index.php/SS/article/view/5282 | Pathria is an eminent theoretical physicist, known for his work on superfluidity in liquid helium and phase transitions. | p[0] | 0.850 | valid | |
| What is covered in part IV of the series? | the units of measurement employed in the domain of electricity and magnetism | Part I and II cover the most basic measurements a student of physics has to deal with, which are the ones related to the three fundamental entities of Nature—space, time and matter. These measurements constitute the elementary processes of determining the length of a straight line joining two given points of space, the time interval elapsed between two given instants of time, and the mass of a given piece of matter. Part I focuses on length while part II focuses on time and mass. In part III, the author reviews the sequence of developments that finally led to the adoption of the fundamental units employed with respect to heat and light; thermometry and calorimetry are discussed in case of heat and for light the fundamental units employed in photometry. In the concluding article, part IV, the units of measurement employed in the domain of electricity and magnetism are discussed. | 799 | summary | 0.970 | https://ejournals.ncert.gov.in/index.php/SS/article/view/5282 | In the concluding article, part IV, the units of measurement employed in the domain of electricity and magnetism are discussed. | p[0] | |||
| What is the central theme of Prof. R.K. Pathria's series of articles? | an ever-increasing degree of scientific precision | Published 2026-07-09 Prof. R.K. Pathria is an eminent theoretical physicist, known for his work on superfluidity in liquid helium and phase transitions. The book “Statistical Mechanics” authored by him still continues to be a popular title among undergraduates and is an international bestseller on this subject. Prof. Pathria is currently a professor emeritus at the university of Waterloo. In this article, Prof. R.K. Pathria provides a comprehensive history about the use of different units of measurement. Through this series of four articles, the author attempts to narrate the exciting and thrilling story of the adoption of different units of measurements, dominated by the flavour of an ever-increasing degree of scientific precision which forms the central theme of the series. Each article covers different units—length, time, weight, luminosity, electricity and magnetism. | 692 | summary | 0.970 | https://ejournals.ncert.gov.in/index.php/SS/article/view/5282 | Through this series of four articles, the author attempts to narrate the exciting and thrilling story of the adoption of different units of measurements, dominated by the flavour of an ever-increasing degree of scientific precision which forms the central theme of the series. | ||||
| What topics are reviewed in part III of the series? | thermometry and calorimetry are discussed in case of heat and for light the fundamental units employed in photometry | Part I and II cover the most basic measurements a student of physics has to deal with, which are the ones related to the three fundamental entities of Nature—space, time and matter. These measurements constitute the elementary processes of determining the length of a straight line joining two given points of space, the time interval elapsed between two given instants of time, and the mass of a given piece of matter. Part I focuses on length while part II focuses on time and mass. In part III, the author reviews the sequence of developments that finally led to the adoption of the fundamental units employed with respect to heat and light; thermometry and calorimetry are discussed in case of heat and for light the fundamental units employed in photometry. In the concluding article, part IV, the units of measurement employed in the domain of electricity and magnetism are discussed. | 645 | summary | 0.970 | https://ejournals.ncert.gov.in/index.php/SS/article/view/5282 | In part III, the author reviews the sequence of developments that finally led to the adoption of the fundamental units employed with respect to heat and light; thermometry and calorimetry are discussed in case of heat and for light the fundamental units employed in photometry. | ||||
| What is Prof. R.K. Pathria known for in theoretical physics? | superfluidity in liquid helium and phase transitions | Published 2026-07-09 Prof. R.K. Pathria is an eminent theoretical physicist, known for his work on superfluidity in liquid helium and phase transitions. The book “Statistical Mechanics” authored by him still continues to be a popular title among undergraduates and is an international bestseller on this subject. Prof. Pathria is currently a professor emeritus at the university of Waterloo. In this article, Prof. R.K. Pathria provides a comprehensive history about the use of different units of measurement. Through this series of four articles, the author attempts to narrate the exciting and thrilling story of the adoption of different units of measurements, dominated by the flavour of an ever-increasing degree of scientific precision which forms the central theme of the series. Each article covers different units—length, time, weight, luminosity, electricity and magnetism. | 99 | list | 0.820 | https://ejournals.ncert.gov.in/index.php/SS/article/view/5282 | Pathria is an eminent theoretical physicist, known for his work on superfluidity in liquid helium and phase transitions. | p[0] | |||
| What topics are covered in Prof. R.K. Pathria's series of articles? | length, time, weight, luminosity, electricity and magnetism | Published 2026-07-09 Prof. R.K. Pathria is an eminent theoretical physicist, known for his work on superfluidity in liquid helium and phase transitions. The book “Statistical Mechanics” authored by him still continues to be a popular title among undergraduates and is an international bestseller on this subject. Prof. Pathria is currently a professor emeritus at the university of Waterloo. In this article, Prof. R.K. Pathria provides a comprehensive history about the use of different units of measurement. Through this series of four articles, the author attempts to narrate the exciting and thrilling story of the adoption of different units of measurements, dominated by the flavour of an ever-increasing degree of scientific precision which forms the central theme of the series. Each article covers different units—length, time, weight, luminosity, electricity and magnetism. | 823 | list | 0.820 | https://ejournals.ncert.gov.in/index.php/SS/article/view/5282 | Each article covers different units—length, time, weight, luminosity, electricity and magnetism. | p[0] | |||
| What topics are discussed in part III of the series? | thermometry and calorimetry are discussed in case of heat and for light the fundamental units employed in photometry | Part I and II cover the most basic measurements a student of physics has to deal with, which are the ones related to the three fundamental entities of Nature—space, time and matter. These measurements constitute the elementary processes of determining the length of a straight line joining two given points of space, the time interval elapsed between two given instants of time, and the mass of a given piece of matter. Part I focuses on length while part II focuses on time and mass. In part III, the author reviews the sequence of developments that finally led to the adoption of the fundamental units employed with respect to heat and light; thermometry and calorimetry are discussed in case of heat and for light the fundamental units employed in photometry. In the concluding article, part IV, the units of measurement employed in the domain of electricity and magnetism are discussed. | 645 | list | 0.820 | https://ejournals.ncert.gov.in/index.php/SS/article/view/5282 | In part III, the author reviews the sequence of developments that finally led to the adoption of the fundamental units employed with respect to heat and light; thermometry and calorimetry are discussed in case of heat and for light the fundamental units employed in photometry. | ||||
| What topics has Prof. R.K. Pathria worked on? | superfluidity in liquid helium and phase transitions | Published 2026-07-09 Prof. R.K. Pathria is an eminent theoretical physicist, known for his work on superfluidity in liquid helium and phase transitions. The book “Statistical Mechanics” authored by him still continues to be a popular title among undergraduates and is an international bestseller on this subject. Prof. Pathria is currently a professor emeritus at the university of Waterloo. In this article, Prof. R.K. Pathria provides a comprehensive history about the use of different units of measurement. Through this series of four articles, the author attempts to narrate the exciting and thrilling story of the adoption of different units of measurements, dominated by the flavour of an ever-increasing degree of scientific precision which forms the central theme of the series. Each article covers different units—length, time, weight, luminosity, electricity and magnetism. | 99 | list | 0.820 | https://ejournals.ncert.gov.in/index.php/SS/article/view/5282 | Pathria is an eminent theoretical physicist, known for his work on superfluidity in liquid helium and phase transitions. | p[0] | |||
| What are the three fundamental entities of Nature discussed in parts I and II? | space, time and matter | Part I and II cover the most basic measurements a student of physics has to deal with, which are the ones related to the three fundamental entities of Nature—space, time and matter. These measurements constitute the elementary processes of determining the length of a straight line joining two given points of space, the time interval elapsed between two given instants of time, and the mass of a given piece of matter. Part I focuses on length while part II focuses on time and mass. In part III, the author reviews the sequence of developments that finally led to the adoption of the fundamental units employed with respect to heat and light; thermometry and calorimetry are discussed in case of heat and for light the fundamental units employed in photometry. In the concluding article, part IV, the units of measurement employed in the domain of electricity and magnetism are discussed. | 158 | list | 0.740 | https://ejournals.ncert.gov.in/index.php/SS/article/view/5282 | Part I and II cover the most basic measurements a student of physics has to deal with, which are the ones related to the three fundamental entities of Nature—space, time and matter. | ||||
| What position does Prof. R.K. Pathria currently hold? | professor emeritus at the university of Waterloo | Published 2026-07-09 Prof. R.K. Pathria is an eminent theoretical physicist, known for his work on superfluidity in liquid helium and phase transitions. The book “Statistical Mechanics” authored by him still continues to be a popular title among undergraduates and is an international bestseller on this subject. Prof. Pathria is currently a professor emeritus at the university of Waterloo. In this article, Prof. R.K. Pathria provides a comprehensive history about the use of different units of measurement. Through this series of four articles, the author attempts to narrate the exciting and thrilling story of the adoption of different units of measurements, dominated by the flavour of an ever-increasing degree of scientific precision which forms the central theme of the series. Each article covers different units—length, time, weight, luminosity, electricity and magnetism. | 342 | factual | 0.570 | https://ejournals.ncert.gov.in/index.php/SS/article/view/5282 | Pathria is currently a professor emeritus at the university of Waterloo. | p[0] | 0.700 |
Read straight from the file — download or use the API URL for the full dataset.
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