15 Best Websites to Download Research Papers for Free

Best Websites to Download Research Papers for Free

Is your thirst for knowledge limited by expensive subscriptions? Explore the best websites to download research papers for free and expand your academic reach.

With paywalls acting like impenetrable fortresses, accessing scholarly articles becomes a herculean task. However, a beacon of hope exists in the form of free-access platforms, quenching our thirst for intellectual wisdom. Let’s set sail on this scholarly journey.

Table of Contents

Today’s champions of academia aren’t just about offering free access, they uphold ethics and copyright respectability. Let’s delve into these repositories that are reshaping the academia world. You can download free research papers from any of the following websites.

Best Websites to Download Research Papers

#1. sci-hub – best for accessing paywalled academic papers.

Despite its contentious standing, Sci-Hub offers an invaluable service to knowledge-seekers. While navigating the tightrope between access and legality, it represents a game-changing force in the world of academic research.

Source: https://www.sci-hub.se

#2. Library Genesis (Libgen) – Best for a Wide Range of Books and Articles

It’s not just a repository, but a vibrant confluence of multiple disciplines and interests, catering to the unique intellectual appetite of each knowledge seeker.

What are the benefits of Libgen?

Source: https://libgen.is

#3. Unpaywall – Best for Legal Open Access Versions of Scholarly Articles

What are the benefits of Unpaywall?

#4. Directory of Open Access Journals (DOAJ) – Best for Peer-Reviewed Open Access Journals

Source: https://doaj.org

#5. Open Access Button – Best for Free Versions of Paywalled Articles

What are the benefits of Open Access Button?

#6. Science Open – Best for a Wide Variety of Open Access Scientific Research

Consider Science Open as a bustling town square in the city of scientific knowledge, where scholars from all walks of life gather, discuss, and dissect over 60 million articles. 

You might also like:

#7. CORE – Best for Open Access Content Across Disciplines

With its unparalleled aggregation and comprehensive access, CORE embodies the grand orchestra of global research. It stands as an essential tool in the modern researcher’s toolkit.

#8. ERIC – Best for Education Research

What are the benefits of ERIC?

#9. PaperPanda – Best for Free Access to Research Papers

It’s like having a personal research assistant, guiding you through the maze of scholarly literature.

#10. Citationsy Archives – Best for Research Papers from Numerous Fields

Source: https://citationsy.com

#11. OA.mg – Best for Direct Download Links to Open Access Papers

Source: https://oa.mg

#12. Social Science Research Network (SSRN) – Best for Social Sciences and Humanities Research

SSRN serves as an invaluable resource for researchers in the social sciences and humanities, fostering a community that drives innovation and advancements in these fields.

#13. Project Gutenberg – Best for Free Access to eBooks

Project Gutenberg serves as a testament to the power of literature and the accessibility of knowledge. It enables readers worldwide to embark on intellectual journeys through its extensive collection of free eBooks.

#14. PLOS (Public Library of Science) – Best for Open Access to Scientific and Medical Research

As a leading publisher of open access research, PLOS fosters the dissemination of cutting-edge scientific discoveries to a global audience. 

#15. arXiv.org – Best for Preprints in Science, Mathematics, and Computer Science

In a world where knowledge is king, accessing a research paper shouldn’t feel like an impossible task. Thanks to these free and innovative websites, we can escape the barriers of paywalls and dive into a vast ocean of intellectual wealth. 

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“The only truly modern academic research engine”

Oa.mg is a search engine for academic papers, specialising in open access. we have over 250 million papers in our index..

science research paper free download

Sci-Hub is the most controversial project in today science. The goal of Sci-Hub is to provide free and unrestricted access to all scientific knowledge ever published in journal or book form.

Today the circulation of knowledge in science is restricted by high prices. Many students and researchers cannot afford academic journals and books that are locked behind paywalls. Sci-Hub emerged in 2011 to tackle this problem. Since then, the website has revolutionized the way science is being done.

Sci-Hub is helping millions of students and researchers, medical professionals, journalists and curious people in all countries to unlock access to knowledge. The mission of Sci-Hub is to fight every obstacle that prevents open access to knowledge: be it legal, technical or otherwise.

To get more information visit the about Sci-Hub section.

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Find scientific papers by searching here or download the Chrome extension

Unlocking knowledge: your gateway to open access scientific papers and research data, introduction.

In the digital era, the quest for knowledge and scientific discovery is no longer confined to the walls of academia and research institutions. Welcome to [Your Website Name] , a dedicated platform for finding and downloading open access scientific papers and other research data. Our mission is to democratize access to scientific information, making it freely available to researchers, students, and curious minds across the globe.

What is Open Access?

Open Access (OA) refers to the practice of providing unrestricted access via the Internet to peer-reviewed scholarly research. OA content is available to all, without the usual financial or legal barriers. We believe that open access is crucial in fostering a culture of knowledge sharing and collaboration, thereby accelerating innovation and discovery.

Types of Open Access:

  • Gold Open Access: Papers are published in open access journals that provide immediate open access to all of their articles.
  • Green Open Access (Self-Archiving): Authors publish in any journal and then self-archive a version of the article for free public use in their institutional repository or on a website.
  • Hybrid Open Access: Some articles in a subscription journal are made open access upon the payment of an additional charge.

Downloading Resources

  • Direct Downloads: Once you find a paper or dataset, download it directly.
  • Citation Tools: Easily export citations in various formats to incorporate them into your research.

Best Websites To Download Research Papers For Free: Beyond Sci-Hub

Navigating the vast ocean of academic research can be daunting, especially when you’re on a quest for specific research papers without the constraints of paywalls. Fortunately, the digital age has ushered in an era of accessible knowledge, with various platforms offering free downloads of scholarly articles.

In this article, we explore some of the best websites that provide researchers, students, and academicians with free access to a plethora of research papers across diverse fields, ensuring that knowledge remains within everyone’s reach.

Best Websites To Download Research Papers For Free

PlatformFeatures
– Hosts diverse academic papers.
– Free access to many scholarly articles.
– Links to open-access resources.
– Combines social networking with research.
– Direct downloads of open-access papers.
– Allows requests for papers from authors.
– Open-access article repository.
– Direct download of free PDFs.
– Search using keywords, DOI, or journals.
– Extensive open-access journal repository.
– Free download of scholarly articles.
– Advanced search by keywords, publisher, language.
– Focus on medicine and life sciences.
– Lists open-access and subscription articles.
– Free full-text links and integration with Unpaywall.
– Free access to paywalled articles.
– Uses DOI for article retrieval.
– Legal and ethical considerations.

Google Scholar

As a researcher, you might find Google Scholar to be a repository brimming with academic papers covering a broad span of domains like social sciences, computer science, and humanity, including:

  • Journal articles
  • Conference papers, and

Unlike other websites to download research papers, Google Scholar provides free access to a vast collection of scholarly literature, making it one of the best websites to download research.

Not every article is available in full PDF format directly; however, Google Scholar often links to other open access resources like DOAJ (Directory of Open Access Journals) and open-access repositories where you can directly download papers.

For instance, if you’re searching for a specific 2023 research paper in mathematics, you can use Google Scholar to locate the paper and check if it’s available for free download either on the platform itself or through links to various open access sources.

In many cases, Google Scholar integrates with tools like Unpaywall and Open Access Button, which are browser extensions that help you find free versions of paywalled articles.

These extensions often redirect you to open-access content, including those on platforms like Sci-Hub and Library Genesis, although it’s crucial to be aware of the legal and ethical implications of using such services.

ResearchGate

ResearchGate is a unique platform that blends social networking with academic research, making it an essential tool for researchers and scientists across various disciplines.

science research paper free download

Here, you have access to a digital library of millions of research papers, spanning fields from computer science to social sciences and beyond.

When you’re on ResearchGate, downloading a research paper is relatively straightforward, especially if it’s open access. Many researchers upload the full PDF of their work, providing free access to their peer-reviewed articles.

If the research paper you’re interested in isn’t available for direct download, ResearchGate offers a unique feature: you can request a copy directly from the author.

This approach not only gets you the paper but also potentially opens a line of communication with leading experts in your field.

It’s important to note that ResearchGate isn’t just a repository; it’s a platform for discovery and connection. You can:

  • Follow specific researchers
  • Join discussions, and
  • Receive notifications about new research in your domain.

While it doesn’t have the controversial direct download links like Sci-Hub or Library Genesis, ResearchGate offers a more ethical and legal route to accessing academic papers. 

ScienceOpen

ScienceOpen is a comprehensive repository that hosts a multitude of open-access research articles across various fields, from the social sciences to computer science. 

The process of downloading a research paper on ScienceOpen is remarkably straightforward. Since it’s an open-access platform, most of the papers are available to download as PDFs without any cost.

This means you can access high-quality, peer-reviewed academic research without encountering paywalls that are often a barrier in many other scientific platforms.

For instance, if you’re delving into the latest 2023 scientific papers in mathematics, ScienceOpen can be your go-to source. You can easily search for research papers using:

  • Browsing through various open access journals featured on the site.

The direct download feature simplifies access to these papers, making it convenient for you to obtain the research you need.

Directory of Open Access Journals (DOAJ)

The Directory of Open Access Journals (DOAJ) is a digital library is an extensive repository of open-access, peer-reviewed journals, covering a wide array of subjects from humanities to nuclear science.

When you’re navigating DOAJ, you’ll discover that it’s not just a platform to download research papers; it’s a gateway to a world of academic research.

science research paper free download

Each journal article listed is freely accessible, meaning you can download these scholarly articles without any cost or subscription.

The process is simple: search for research papers using specific keywords, subjects, or even DOAJ’s advanced search functionality that includes filters like:

  • Language, or
  • The year of publication.

For example, if you’re delving into the latest developments in scientific research in 2023, DOAJ allows you to refine your search to the most recent publications.

Once you find a relevant research paper, you can easily access the full text in PDF format through a direct download link. This is particularly useful for accessing high-quality, open-access research papers that are not always readily available on other platforms like Sci-Hub or Library Genesis.

PubMed hosts millions of research articles, primarily in the fields of medicine and life sciences, but also encompassing a broad range of scientific research.

When you’re on PubMed, you can search for research papers using:

  • Authors, or
  • Specific journal names.

While PubMed lists both open-access and subscription-based journal articles, it offers a unique feature for accessing papers for free.

If you’re looking for a particular research paper, say in the domain of computer science or social sciences from 2023, you can directly access its abstract on PubMed. For open access articles, a free full-text link is often available, allowing you to download the research paper in PDF format.

PubMed integrates with tools like Unpaywall and the Open Access Button. These browser extensions help you find open-access versions of the articles you’re interested in, bypassing the paywalls that often restrict access to scholarly literature.

While PubMed itself doesn’t provide direct download links for all articles, its connection with these tools and various open access repositories ensures that you, as a researcher, have greater access to scientific papers.

Sci-Hub (with Caution)

Sci-Hub, often dubbed the ‘Pirate Bay of Science,’ has been a game-changer in the scientific community since its inception by Alexandra Elbakyan in 2011.

It operates as a controversial, yet widely used platform providing free access to millions of research papers and academic articles that are typically locked behind paywalls.

As a researcher, you might find Sci-Hub an intriguing, albeit contentious, tool for accessing scholarly literature.

When you’re looking to download a research paper from Sci-Hub, the process is relatively straightforward. Say you need a journal article on computer science or a groundbreaking study in social sciences from 2023; you just need to have the DOI (Digital Object Identifier) of the paper.

By entering this DOI into Sci-Hub’s search bar, the website bypasses publisher paywalls, offering you direct download links to PDF versions of the articles.

science research paper free download

It’s crucial to note that while Sci-Hub provides access to a vast repository of scientific research, its legality is under constant scrutiny. The platform operates via various proxy links and has been the subject of numerous legal battles with publishers and academic institutions.

Nevertheless, Sci-Hub remains a popular go-to for researchers and scientists globally, especially those without access to university libraries or digital archives.

While it opens doors to a wealth of knowledge, users should be aware of the ethical and legal implications of using such a service in their respective countries.

Wrapping Up: You Can Get Free Academic Papers 

The digital landscape offers a wealth of resources for accessing academic research without financial barriers. The platforms we share here provide an invaluable service to the scholarly community, democratising access to knowledge and fostering intellectual growth.

Whether you’re a seasoned researcher or a curious student, these websites bridge the gap between you and the vast world of academic literature, ensuring that the pursuit of knowledge remains an inclusive and equitable journey for all. Remember to consider the legal and ethical aspects when using these resources.

science research paper free download

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Research paper

Research paper is a written report which contains the results of original scientific research (primary research article) or the review of published scientific papers on one or several science topics (review article). In primary research articles, the authors give vital information about the research that allows other members of the scientific community to evaluate it, reproduce science experiments, and also to assess the reasoning and conclusions drawn from them. Review articles are designed to analyze, evaluate, summarize or synthesize research already conducted in primary academic sources. Quite often, a science article combines these two types of scientific text, including the overview and original parts.

Currently, the number of scientific articles in open access is growing fast, but all of them are spread on numerous science websites on the Internet, and therefore it is hard for a researcher to find the necessary information for new science discoveries or download PDF due to the unreliability of websites.

CyberLeninka is intended to solve this problem. We provide platform, which aggregates a lot of free articles from various open access peer-reviewed journals . And our global goal is to build new research infrastructure for academia.

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Topology optimization with explicit components considering stress constraints.

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1. Introduction

2. mmc topology optimization framework and geometrical description, 2.1. mmc topology optimization method, 2.2. a new topology description function, 3. problem formulation, 3.1. problem statement and mathematical formulation, 3.2. global stress control, 4. sensitivity analysis, 5. numerical solution aspects, 5.1. l-shaped beam, 5.2. t-shaped beam, 6. conclusions, author contributions, institutional review board statement, informed consent statement, data availability statement, conflicts of interest, abbreviations.

SIMPSolid isotropic material with penalization
LSMLevel-set method
ESOEvolutionary structural optimization
MMCMoving morphable components
MMAMethod of moving asymptotes
TDFTopology description function
  • Bendsøe, M.P.; Kikuchi, N. Generating optimal topologies in structural design using a homogenization method. Comput. Methods Appl. Mech. Eng. 1988 , 71 , 197–224. [ Google Scholar ] [ CrossRef ]
  • Bendsøe, M.P.; Sigmund, O. Material interpolation schemes in topology optimization. Arch. Appl. Mech. 1999 , 69 , 635–654. [ Google Scholar ] [ CrossRef ]
  • Querin, O.M.; Young, V.; Steven, G.; Xie, Y. Computational efficiency and validation of bi-directional evolutionary structural optimisation. Comput. Methods Appl. Mech. Eng. 2000 , 189 , 559–573. [ Google Scholar ] [ CrossRef ]
  • Wang, M.Y.; Wang, X.; Guo, D. A level set method for structural topology optimization. Comput. Methods Appl. Mech. Eng. 2003 , 192 , 227–246. [ Google Scholar ] [ CrossRef ]
  • Guo, X.; Zhang, W.; Zhong, W. Doing topology optimization explicitly and geometrically—A new moving morphable components based framework. J. Appl. Mech. 2014 , 81 , 081009. [ Google Scholar ] [ CrossRef ]
  • Zhang, W.; Yang, W.; Zhou, J.; Li, D.; Guo, X. Structural topology optimization through explicit boundary evolution. J. Appl. Mech. 2017 , 84 , 011011. [ Google Scholar ] [ CrossRef ]
  • Li, Z.; Xu, H.; Zhang, S. A Comprehensive Review of Explicit Topology Optimization Based on Moving Morphable Components (MMC) Method. Arch. Comput. Methods Eng. 2024 , 31 , 1–30. [ Google Scholar ] [ CrossRef ]
  • Ruichao, L.; Shikai, J.; Ying, L.; Dengbao, X.; Yang, C. A Hybrid Topology Optimization Method Of Simp And Mmc Considering Precise Control Of Minimum Size. Chin. J. Theor. Appl. Mech. 2022 , 54 , 3524–3537. [ Google Scholar ]
  • Zhang, J.; Liao, J.; Liu, E. Topology optimization method based on SIMP-MMC for structure size precise control. J. Mech. Strength 2022 , 44 , 102–110. [ Google Scholar ]
  • Cheng, G.; Jiang, Z. Study on topology optimization with stress constraints. Eng. Optim. 1992 , 20 , 129–148. [ Google Scholar ] [ CrossRef ]
  • Cheng, G.D.; Guo, X. ε -relaxed approach in structural topology optimization. Struct. Optim. 1997 , 13 , 258–266. [ Google Scholar ] [ CrossRef ]
  • Rozvany, G.; Sobieszczanski-Sobieski, J. New optimality criteria methods: Forcing uniqueness of the adjoint strains by corner-rounding at constraint intersections. Struct. Optim. 1992 , 4 , 244–246. [ Google Scholar ] [ CrossRef ]
  • Kreisselmeier, G.; Steinhauser, R. Systematic control design by optimizing a vector performance index. In Computer Aided Design of Control Systems ; Elsevier: Amsterdam, The Netherlands, 1980; pp. 113–117. [ Google Scholar ]
  • Duysinx, P.; Sigmund, O. New developments in handling stress constraints in optimal material distribution. In Proceedings of the 7th AIAA/USAF/NASA/ISSMO Symposium on Multidisciplinary Analysis and Optimization, St. Louis, MO, USA, 2–4 September 1998; p. 4906. [ Google Scholar ]
  • Yang, D.; Liu, H.; Zhang, W.; Li, S. Stress-constrained topology optimization based on maximum stress measures. Comput. Struct. 2018 , 198 , 23–39. [ Google Scholar ] [ CrossRef ]
  • Senhora, F.V.; Giraldo-Londono, O.; Menezes, I.F.; Paulino, G.H. Topology optimization with local stress constraints: A stress aggregation-free approach. Struct. Multidiscip. Optim. 2020 , 62 , 1639–1668. [ Google Scholar ] [ CrossRef ]
  • Zhai, X.; Chen, F.; Wu, J. Alternating optimization of design and stress for stress-constrained topology optimization. Struct. Multidiscip. Optim. 2021 , 64 , 2323–2342. [ Google Scholar ] [ CrossRef ]
  • da Silva, G.A.; Aage, N.; Beck, A.T.; Sigmund, O. Local versus global stress constraint strategies in topology optimization: A comparative study. Int. J. Numer. Methods Eng. 2021 , 122 , 6003–6036. [ Google Scholar ] [ CrossRef ]
  • Zhang, S.; Gain, A.L.; Norato, J.A. Stress-based topology optimization with discrete geometric components. Comput. Methods Appl. Mech. Eng. 2017 , 325 , 1–21. [ Google Scholar ] [ CrossRef ]
  • Zhang, W.; Li, D.; Zhou, J.; Du, Z.; Li, B.; Guo, X. A moving morphable void (MMV)-based explicit approach for topology optimization considering stress constraints. Comput. Methods Appl. Mech. Eng. 2018 , 334 , 381–413. [ Google Scholar ] [ CrossRef ]
  • Rostami, P.; Marzbanrad, J. Stress-limited topology optimization with local volume constraint using moving morphable components. Arch. Appl. Mech. 2021 , 91 , 2345–2367. [ Google Scholar ] [ CrossRef ]
  • Deng, J.; Chen, W. Design for structural flexibility using connected morphable components based topology optimization. Sci. China Technol. Sci. 2016 , 59 , 839–851. [ Google Scholar ] [ CrossRef ]
  • Guo, X.; Zhang, W.; Zhang, J.; Yuan, J. Explicit structural topology optimization based on moving morphable components (MMC) with curved skeletons. Comput. Methods Appl. Mech. Eng. 2016 , 310 , 711–748. [ Google Scholar ] [ CrossRef ]
  • Zheng, R.; Kim, C. An enhanced topology optimization approach based on the combined MMC and NURBS-curve boundaries. Int. J. Precis. Eng. Manuf. 2020 , 21 , 1529–1538. [ Google Scholar ] [ CrossRef ]
  • Wang, L.; Shi, D.; Zhang, B.; Li, G.; Liu, P. Real-time topology optimization based on deep learning for moving morphable components. Autom. Constr. 2022 , 142 , 104492. [ Google Scholar ] [ CrossRef ]
  • Li, Z.; Hu, X.; Chen, W. Moving morphable curved components framework of topology optimization based on the concept of time series. Struct. Multidiscip. Optim. 2023 , 66 , 19. [ Google Scholar ] [ CrossRef ]
  • Zhang, W.; Yuan, J.; Zhang, J.; Guo, X. A new topology optimization approach based on Moving Morphable Components (MMC) and the ersatz material model. Struct. Multidiscip. Optim. 2016 , 53 , 1243–1260. [ Google Scholar ] [ CrossRef ]
  • Ni, B.; Elishakoff, I.; Jiang, C.; Fu, C.; Han, X. Generalization of the super ellipsoid concept and its application in mechanics. Appl. Math. Model. 2016 , 40 , 9427–9444. [ Google Scholar ] [ CrossRef ]
  • Zhang, W.; Li, D.; Yuan, J.; Song, J.; Guo, X. A new three-dimensional topology optimization method based on moving morphable components (MMCs). Comput. Mech. 2017 , 59 , 647–665. [ Google Scholar ] [ CrossRef ]
  • Guo, H.; Zhao, K.; Wang, M.Y. A new approach for simultaneous shape and topology optimization based on dynamic implicit surface function. Control Cybern. 2005 , 34 , 255–282. [ Google Scholar ]
  • Shannon, T.; Robinson, T.; Murphy, A.; Armstrong, C. Generalized Bezier components and successive component refinement using moving morphable components. Struct. Multidiscip. Optim. 2022 , 65 , 193. [ Google Scholar ] [ CrossRef ]
  • Verbart, A.; Langelaar, M.; Keulen, F.v. A unified aggregation and relaxation approach for stress-constrained topology optimization. Struct. Multidiscip. Optim. 2017 , 55 , 663–679. [ Google Scholar ] [ CrossRef ]
  • Cui, T.; Sun, Z.; Liu, C.; Li, L.; Cui, R.; Guo, X. Topology optimization of plate structures using plate element-based moving morphable component (MMC) approach. Acta Mech. Sin. 2020 , 36 , 412–421. [ Google Scholar ] [ CrossRef ]
  • Du, Z.; Cui, T.; Liu, C.; Zhang, W.; Guo, Y.; Guo, X. An efficient and easy-to-extend Matlab code of the Moving Morphable Component (MMC) method for three-dimensional topology optimization. Struct. Multidiscip. Optim. 2022 , 65 , 158. [ Google Scholar ] [ CrossRef ]
  • Svanberg, K. The method of moving asymptotes—A new method for structural optimization. Int. J. Numer. Methods Eng. 1987 , 24 , 359–373. [ Google Scholar ] [ CrossRef ]
  • Zhang, W.S.; Guo, X.; Wang, M.Y.; Wei, P. Optimal topology design of continuum structures with stress concentration alleviation via level set method. Int. J. Numer. Methods Eng. 2013 , 93 , 942–959. [ Google Scholar ] [ CrossRef ]
  • Manual, A.S.U. Abaqus 6.11. 2012, Volume 89. v6. Available online: http://130.149.89.49:2080/v2016/index.html (accessed on 17 July 2024).
  • Jiang, X.; Wang, H.; Li, Y.; Mo, K. Machine learning based parameter tuning strategy for MMC based topology optimization. Adv. Eng. Softw. 2020 , 149 , 102841. [ Google Scholar ] [ CrossRef ]

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Ma, Y.; Li, Z.; Wei, Y.; Yang, K. Topology Optimization with Explicit Components Considering Stress Constraints. Appl. Sci. 2024 , 14 , 7171. https://doi.org/10.3390/app14167171

Ma Y, Li Z, Wei Y, Yang K. Topology Optimization with Explicit Components Considering Stress Constraints. Applied Sciences . 2024; 14(16):7171. https://doi.org/10.3390/app14167171

Ma, Yubao, Zhiguo Li, Yuxuan Wei, and Kai Yang. 2024. "Topology Optimization with Explicit Components Considering Stress Constraints" Applied Sciences 14, no. 16: 7171. https://doi.org/10.3390/app14167171

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Computer Science > Computer Vision and Pattern Recognition

Title: imagen 3.

Abstract: We introduce Imagen 3, a latent diffusion model that generates high quality images from text prompts. We describe our quality and responsibility evaluations. Imagen 3 is preferred over other state-of-the-art (SOTA) models at the time of evaluation. In addition, we discuss issues around safety and representation, as well as methods we used to minimize the potential harm of our models.
Subjects: Computer Vision and Pattern Recognition (cs.CV)
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MPBSE Class 9 Social Science Syllabus 2024-25: Download MP Board Marking Scheme PDF

Mp board social science syllabus 2024-25: read this article to get the mpbse class 9 social science syllabus 2024-25 pdf. also, download the question paper design, marking scheme, and exam pattern..

Atul Rawal

MPBSE 9th Social Science Syllabus 2024-2025: The Madhya Pradesh Board of Secondary Education, which is also known by its abbreviation MPBSE, is the state-level educational board. The MPBSE board releases important notifications and circulars for the students and teachers for a smooth learning process. The MPBSE 2024-25 syllabus and marking scheme are out and can be downloaded from the official website. 

MP Board Class 9 Social Science Marking Scheme 2024-25

  • Question No. 1 to 5 will be 30 objective type questions. Each question carries 01 mark.
  • Question No. 1 Correct option 08.
  • Question No. 2 Question No. 3 Blank space 06, True False 06.
  • Question No. Correct pair 06.
  • Question No. 5 Answer in one sentence 06.
  • Question No. 6 to 17 will be a total of 12 questions. Each question carries 02 marks. Question No. 18 to 20 will be a total of 03 questions. Each question carries 03 marks.
  • Question No. 21 to 22 will be a total of 02 questions. Each question carries 04 marks.
  • Question No. 23 will be a question based on the map of India. Which will be given from the chapters of the textbook Contemporary India-1, on which 04 marks are allotted.

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MP Board Class 9 Social Science Syllabus 2024-25

As per the latest syllabus for the 2025 MP Board Class 9 exams, the syllabus will have four sections and each one of them will give a holistic learning of History, Geography and Civics. Check the unit-wise syllabus below and download its PDF.

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