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PSC Chronicles Team

Samrat Samprati Museum Inaugurated in Gandhinagar

Why in News?

Prime Minister Narendra Modi inaugurated the Samrat Samprati Museum at Koba Tirth in Gandhinagar, Gujarat on the occasion of Bhagwan Mahavir Jayanti. The museum highlights the legacy of Samrat Samprati, a Mauryan emperor known for promoting Jainism

samrat samprati

Who was Samrat Samprati?

  • Period: c. 224–215 BCE
  • Dynasty: Mauryan Dynasty
  • Lineage:
    • Grandson of Emperor Ashoka
    • Son of Kunala

Key Contributions

  • Promoted Jainism across India
  • Converted to Jainism by monk Suhastin
    • Disciple of Acharya Bhadrabahu
  • Known for:
    • Construction of Jain temples
    • Spreading Jain teachings
    • Commissioning lakhs of Tirthankara idols

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YUVIKA: ISRO’s Young Scientist Programme Explained

Why in News?

The Government of India is actively promoting scientific awareness among students through initiatives like Yuva Vigyani Karyakram (YUVIKA). Highlighted by the Union Minister of State for Science & Technology, the programme plays a crucial role in inspiring school students to pursue careers in space science and STEM fields.

yuvika

What is YUVIKA?

Yuva Vigyani Karyakram (YUVIKA), also known as the Young Scientist Programme, is an educational initiative launched by the Indian Space Research Organisation (ISRO).

Key Purpose

  • To provide early exposure to space science and technology
  • To encourage students to take up careers in STEM (Science, Technology, Engineering, Mathematics)

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Antariksh Venture Capital Fund (AVCF): India’s First Spacetech Fund

Why in News?

India has launched the Antariksh Venture Capital Fund (AVCF) to strengthen its growing spacetech ecosystem. This is the country’s first dedicated venture capital fund for the space sector, aimed at supporting startups

antariksh venture capital fund

What is Antariksh Venture Capital Fund (AVCF)?

The Antariksh Venture Capital Fund (AVCF) is a specialized investment fund created to provide:

  • Risk capital to spacetech startups
  • Support for early-stage and growth-stage companies
  • Funding for innovation in space technology and applications

Key Features of AVCF

1. Total Corpus
  • Target fund size: β‚Ή1,600 crore
  • Initial committed amount: β‚Ή1,005 crore (as of November 2025)

2. Anchor Investor
  • Indian National Space Promotion and Authorization Centre (IN-SPACe)
    • Committed β‚Ή1,000 crore
    • Acts as the primary institutional supporter

3. Fund Management
  • Managed by SIDBI Venture Capital Limited (SVCL)
  • SVCL is a subsidiary of:
    • Small Industries Development Bank of India (SIDBI)

Institutional Background

IN-SPACe
  • A regulatory and promotional body under the Department of Space
  • Facilitates private sector participation in space activities
SIDBI
  • Apex financial institution for MSME financing
  • Supports entrepreneurship and innovation

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E20 Petrol with RON 95 Made Mandatory Across India

Why in News?

From April 1, 2026, the Government of India has implemented a major fuel reform by mandating the nationwide sale of E20 petrol (20% ethanol-blended fuel) with a minimum Research Octane Number (RON) of 95.

e20 petrol

What is E20 Petrol?

E20 petrol is a blended fuel consisting of:

  • 80% conventional petrol
  • 20% ethanol (biofuel)

Key Features

  • Ethanol Source:
    • Derived from agricultural products like:
      • Sugarcane
      • Maize (corn)
      • Other food grains
  • Renewable Fuel:
    • Ethanol is a renewable and eco-friendly energy source
  • Nationwide Implementation:
    • Applicable across all States and Union Territories from April 2026
What is Research Octane Number (RON 95)?
  • Definition:
    • RON measures a fuel’s ability to resist engine knocking (premature combustion)
  • RON 95 Explained:
    • Indicates higher fuel stability
    • Performs better under high pressure and temperature
  • Previous Standard:
    • Earlier petrol standard was RON 91

For more Science and Technology current affairs. Clickhere

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Mission MITRA: Preparing Gaganyatris for Space

Why in News?

India has launched Mission MITRA to evaluate astronaut-designates (Gaganyatris) for India’s first human spaceflight programme, Gaganyaan. The mission focuses on testing physical, psychological, and teamwork capabilities in extreme high-altitude conditions.

mission mitra 1

What is Mission MITRA?

  • Full Form: Mapping of Interoperable Traits and Response Assessment (MITRA)
  • Conducted by: ISRO
  • Purpose: To assess astronauts’ ability to function effectively under extreme conditions

Key Features

  • Four astronaut-designates involved:
    • Shubhanshu Shukla
    • Prashanth Balakrishnan Nair
    • Ajit Krishnan
    • Angad Pratap
  • Testing Location: High-altitude regions of Ladakh

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Practice Questions on Eastern Chalukyas of Vengi for APPSC exams

Practice Questions on Eastern Chalukyas of Vengi

Practice Questions on Eastern Chalukyas of Vengi

1. Who was the founder of the Eastern Chalukyas of Vengi?

 
 
 
 

2. The original capital of the Eastern Chalukyas was Vengi, which is located near which modern town?

 
 
 
 

3. What was the title assumed by Kubja Vishnuvardhana that means ‘conqueror of difficulties’?

 
 
 
 

4. The fall of Pulakesin II and the independence of the Eastern Chalukyas is associated with which Pallava king who burnt Badami?

 
 
 
 

5. The period of Eastern Chalukyan rule over Vengi is considered a golden period of Andhra history primarily because of which achievement?

 
 
 
 

6. Who was the Pallava king Mahendravarman I defeated by, which later led to the Pallava revenge on Badami?

 
 
 
 

7. Which is considered the FIRST Telugu literary work and was composed under which Eastern Chalukyan ruler?

 
 
 
 

8. Which Eastern Chalukyan ruler is credited with constructing the famous Draksharama and Chalukya Bhimavaram (Samalkot) temples?

 
 
 
 

9. What is the significance of the Chipurupalli grant of Kubja Vishnuvardhana issued in his 18th year?

 
 
 
 

10. The Maruturu grant of Pulakesin II issued in his 8th regnal year is significant for which reason?

 
 
 
 

11. What year did Dr. N. Venkataramanayya, B.V. Krishnarao and Dr. N. Ramesan fix as the starting point of Eastern Chalukyan chronology (appointment of Kubja Vishnuvardhana as Viceroy)?

 
 
 
 

12. During the reign of Vijayaditya I (9th king, 755-772 A.D.), a major political change occurred in the Western Deccan. What was it?

 
 
 
 

13. Gunaga Vijayaditya (Vijayaditya III, 849-892 A.D.) is notable for which of the following achievements?

 
 
 
 

14. Vijayaditya II (808-847 A.D.) is famous for fighting 108 battles and constructing how many Siva temples?

 
 
 
 

15. Who was Jata Choda Bhima and what was the significance of his rule?

 
 
 
 

16. Rajaraja Chola I (the great Chola ruler) intervened in Vengi affairs to help whose sons reclaim their throne?

 
 
 
 

17. Under which Eastern Chalukyan ruler did Vengi become a Chola protectorate, losing its independence?

 
 
 
 

18. Rajaraja Narendra (1018-61 A.D.) was reinstated on the Vengi throne by which Chola emperor in 1022 A.D.?

 
 
 
 

19. Who was Nannaya Bhatta and what specific purpose did he have in writing the Telugu Mahabharata?

 
 
 
 

20. Which dynasty replaced the Rashtrakutas in Western Deccan around 973 A.D., complicating Eastern Chalukyan politics?

 
 
 
 

21. The battle at Vingavalli during the reign of Gunaga Vijayaditya (III) had what outcome?

 
 
 
 

22. The Golingeswara temple at Biccavole (East Godavari) was constructed by which Eastern Chalukyan ruler?

 
 
 
 

23. The Pancharama shrines β€” five famous Shiva temples of coastal Andhra β€” are located at which five places?

 
 
 
 

24. What was the result of the first matrimonial alliance between the Eastern Chalukyas and the Rashtrakutas?

 
 
 
 

25. The Chinese traveller Yuan Chwang (Hieun Tsang) who visited the Vengi country noted which characteristic of its people?

 
 
 
 

26. Ammaraja II (Amma II, 945-970 A.D.) was forced to abandon his kingdom and flee to Kalinga due to whose invasion?

 
 
 
 

27. The famous Komati (Vaisya) guild that had its headquarters in Penugonda (West Godavari) had branches in how many other centres?

 
 
 
 

28. The Western Chalukyan general Baya Nambi invaded Vengi in 1006 A.D. during Saktivarma I’s reign. What two Eastern Chalukyan forts did he reduce to ashes?

 
 
 
 

29. Kulottunga Chola I, who ascended the Chola throne in 1070 A.D., was of which dual ancestry?

 
 
 
 

30. Which Eastern Chalukyan ruler had his son Irimartiganda victorious at the battles of Niravadyapura and Peruvanguru against the Rashtrakutas, though Irimartiganda lost his life?

 
 
 
 

31. The Rashtrakuta-Eastern Chalukya wars lasted for approximately how many years?

 
 
 
 

32. During which battle did a Chola Brahmin general Rajaraja Brahmamaharaja fight against the Western Chalukyas and Vijayaditya VII with an indecisive result?

 
 
 
 

33. What was the earliest epigraphic evidence of Telugu Desi poetry (as distinguished from Telugu as a language of inscriptions)?

 
 
 
 

34. The Kopparam plates of Vishnuvardhana issued in the 21st regnal year of Pulakesin II show Kubja Vishnuvardhana in what capacity and dated to approximately which year?

 
 
 
 

35. The Satara grant of Kubja Vishnuvardhana shows him as Yuvaraja ‘on the banks of the Bhimaradhi’ in Pulakesin II’s 8th regnal year. What does ‘Bhimaradhi’ refer to and what does this grant prove?

 
 
 
 

36. The Kalyani battle (Kalidindi battle) of 1042 A.D. was between Chola forces and the Western Chalukyan-Vijayaditya VII alliance. What was the political aftermath for Rajaraja Narendra?

 
 
 
 

37. The Chalukyas’ earliest inscription at Badami (578 A.D.) describes them belonging to which Gotra and worshipping which deity?

 
 
 
 

38. After Rajaraja Narendra’s death in 1061 A.D., what happened to the Eastern Chalukya prince Rajendra Chalukya before he eventually became Kulottunga Chola I?

 
 
 
 

39. Which specific administrative feature shows there was ‘no settled administration worthy of the name’ in the Eastern Chalukyan kingdom?

 
 
 
 

40. Which Eastern Chalukyan ruler shifted the capital from Vengi to Rajamahendravaram (Rajahmundry)?

 
 
 
 

41. Which three great Kannada poets closely associated with Kammanadu and Vangipuram (Guntur district) during the Eastern Chalukyan period were Jains by faith?

 
 
 
 

42. The Chalukyas claimed to have obtained which sacred emblem (Lanchana) by the divine favour of Vishnu?

 
 
 
 

43. Vimaladitya, one of the two sons of Danamava (Eastern Chalukya) whose cause was championed by Rajaraja Chola I, received whose daughter in marriage from the Chola king?

 
 
 
 


For Practice Questions on Satavahanas Click here

eastern chalukyas of vengi

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INS Aridhaman: India’s 3rd Nuclear Submarine

Why in News?

India has achieved another milestone in its strategic defence capability with the commissioning of INS Aridhaman, its third nuclear-powered ballistic missile submarine (SSBN).

ins aridhaman

INS Aridhaman:

  • INS Aridhaman (S4) is India’s third indigenously developed SSBN.
  • It is part of the Arihant-class submarines.
  • Developed under the Advanced Technology Vessel (ATV) project.
  • Represents a major advancement in indigenous defence technology.

What is India’s SSBN Programme?

India’s SSBN Programme is a highly classified, indigenous project aimed at constructing nuclear-powered ballistic missile submarines (SSBNs) to establish a credible, sea-based second-strike capability. Β 

  • SSBN stands for ship submersible ballistic nuclear or nuclear-powered ballistic missile submarines.

Current Status of India’s SSBN Fleet (as of April 2026):

  • INS Arihant (S2):Β Commissioned in 2016.
  • INS Arighaat (S3):Β Commissioned in August 2024.
  • INS Aridhaman (S4):Β Commissioned in April 2026.
  • S4Β (likely INS Arisudan):* Currently undergoing sea trials, expected commissioning in 2027
https://www.thehindu.com/news/national/indias-new-nuclear-powered-submarine-ins-aridhaman-commissioned/article70819744.ece: INS Aridhaman: India’s 3rd Nuclear Submarine

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INS Taragiri Commissioned: Boost to India’s Naval Power

Why in News?

The INS Taragiri (F41) is the newest stealth guided-missile frigate of the Indian Navy, commissioned at the Naval Dockyard in Visakhapatnam

ins taragiri

INS Taragiri – Key Highlights

  • INS Taragiri (F41) is the fourth ship under the Project 17A (Nilgiri-class).
  • It is a stealth guided-missile frigate designed for advanced naval warfare.
  • Built by Mazagon Dock Shipbuilders Limited (MDL), Mumbai.
  • Commissioned at the Eastern Naval Command, Visakhapatnam.

What is Project 17A?

Project 17A (P17A) involves the construction of seven advanced Nilgiri-class stealth guided-missile frigates for the Indian Navy, designed for improved stealth, survivability, and combat capability. Built by Mazagon Dock Shipbuilders (MDL) and Garden Reach Shipbuilders & Engineers (GRSE),

Project 17A Vessels:

  • INS Nilgiri:Β First of class.
  • INS Himgiri:Β Built by GRSE.
  • INS Udaygiri:Β Built by MDL.
  • INS Taragiri:Β Commissioned April 2026.
  • INS Dunagiri:Β Delivered to the Indian Navy.
  • INS Vindhyagiri:Β Launched by GRSE.
  • Mahendragiri:Β Seventh frigate
https://www.pib.gov.in/PressReleasePage.aspx?PRID=2248799&reg=3&lang=1: INS Taragiri Commissioned: Boost to India’s Naval Power

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Index of Industrial Production (IIP) – Complete Guide for UPSC, APPSC, TGPSC and other state PSC exams:

What is Index of Industrial Production (IIP)?

  • The Index of Industrial Production (IIP) measures the short-term changes in the volume of production of industrial sectors in an economy.
  • It indicates the growth or contraction of industrial activity over a period of time.

Base Year of IIP

  • Current Base Year: 2011–12
  • Base year is revised periodically to reflect structural changes in the economy.

Components of IIP

The IIP is divided into three major sectors:

1. Manufacturing Sector
  • Weight: ~77.6%
  • Largest contributor to IIP
2. Mining Sector
  • Weight: ~14.4%
3. Electricity Sector
  • Weight: ~8%

Manufacturing dominates, so its performance heavily influences IIP.

Who Releases IIP?



    • Released by: National Statistical Office (NSO)
    • Under: Ministry of Statistics and Programme Implementation (MoSPI)
    • Frequency: Monthly
    • Time lag: Usually released 6 weeks after the reference month

    How is IIP Calculated?

    IIP is calculated using the Laspeyres Index formula, which compares current production with base year production.

    • Uses fixed weights (based on base year)
    • Tracks volume, not value
    • Based on physical output data

    The Core Industries & IIP

    Within the IIP, there are eight “core” industries that represent approximatelyΒ 40.27%Β of the total weight. They are considered high-frequency indicators of infrastructure and industrial performance

    • Refinery ProductsΒ (highest weightage).
    • Electricity,Β Steel,Β Coal,Β Crude Oil,Β Natural Gas,Β Cement, andΒ Fertilisers.

    Index of Industrial Production (IIP) – Complete Guide for UPSC, APPSC, TGPSC and other state PSC exams: Read More Β»