90. What is the name of the world’s first wooden satellite?
[MP Police Constable, 10 December 2025, Shift 2]
- (A) AstraSat
- (B) WooduSat
- (C) LignoSat
- (D) ArihantSat
Answer: (C) LignoSat
Explanation: LignoSat is an experimental Japanese nanosatellite built using wood for structural elements. Its development and 2024 launch drew attention to the possibility of employing renewable materials in spacecraft while testing the behaviour of wood in the harsh conditions of orbit.
89. Where and when was the first men’s Cricket World Cup held?
[MP Police Constable, 2 November 2025, Shift 1]
- (A) England, 1975
- (B) India, 1983
- (C) Australia, 1987
- (D) West Indies, 1979
Answer: (A) England, 1975
Explanation: England hosted the inaugural men’s Cricket World Cup in June 1975. Eight teams participated and the West Indies defeated Australia in the final at Lord’s. The competition was played in a sixty-over one-day format, rather than today’s fifty-over format.
88. Which country hosted the first Cricket World Cup in 1975?
[SSC Selection Post, Matriculation, 1 August 2025, Shift 3]
- (A) India
- (B) England
- (C) Australia
- (D) West Indies
Answer: (B) England
Explanation: The first men’s ODI Cricket World Cup was staged in England in 1975, when the competition was called the Prudential Cup. The West Indies emerged as inaugural champions. England’s existing grounds and cricket infrastructure made it the early host.
87. Which startup launched the QShield cryptography-management platform in April 2025?
[RRB NTPC Undergraduate CBT-I, 12 August 2025, Shift 3]
- (A) AMu Labs
- (B) SST Labs
- (C) CCS Labs
- (D) QNu Labs
Answer: (D) QNu Labs
Explanation: QNu Labs, an Indian quantum-security enterprise, announced QShield as a cryptography-management platform. The initiative was discussed in connection with the National Quantum Mission and the need to protect sensitive communications against emerging risks from future quantum computing.
86. Which location was announced for a pioneering high-altitude para-sports training centre in March 2025?
[RRB NTPC Graduate CBT-I, 12 June 2025, Shift 2]
- (A) Auli, Uttarakhand
- (B) Leh, Ladakh
- (C) Kargil, Ladakh
- (D) Manali, Himachal Pradesh
Answer: (B) Leh, Ladakh
Explanation: Leh in Ladakh was identified as the proposed site for a high-altitude para-sports centre. Training at altitude can support conditioning and endurance, while specialist infrastructure aims to help athletes preparing for major international para-sports championships and the Paralympics.
85. Who became the first male field athlete to win Laureus World Sportsman of the Year in 2025?
[RRB Group D, 26 December 2025, Shift 3]
- (A) Armand Duplantis
- (B) Jakob Ingebrigtsen
- (C) Neeraj Chopra
- (D) Max Verstappen
Answer: (A) Armand Duplantis
Explanation: Swedish pole vaulter Armand Duplantis received the Laureus World Sportsman of the Year award in 2025. His record-breaking performances and Olympic success highlighted the achievements of a field-event athlete in an award often associated with other sports.
84. Which badminton player became the first Thai man to reach the world No. 1 singles ranking in 2025?
[RRB Group D, 21 December 2025, Shift 3]
- (A) Lakshya Sen
- (B) Kodai Naraoka
- (C) Loh Kean Yew
- (D) Kunlavut Vitidsarn
Answer: (D) Kunlavut Vitidsarn
Explanation: Kunlavut Vitidsarn became the first male singles shuttler from Thailand to top the Badminton World Federation world rankings in 2025. His achievement reflects Thailand’s rising competitive standing in international badminton and his success against leading opponents.
83. Where was the first Kho Kho World Cup staged in January 2025?
[RRB Group D, 14 December 2025, Shift 3]
- (A) New Delhi, India
- (B) Dhaka, Bangladesh
- (C) Kathmandu, Nepal
- (D) Colombo, Sri Lanka
Answer: (A) New Delhi, India
Explanation: New Delhi hosted the inaugural Kho Kho World Cup in January 2025, with matches at the Indira Gandhi Arena. The tournament included men’s and women’s events and represented an effort to expand the traditional South Asian sport internationally.
82. Who became the first Indian to win gold at the World Athletics Championships?
[SSC GD Constable, 5 February 2025, Shift 1]
- (A) Milkha Singh
- (B) Neeraj Chopra
- (C) P. T. Usha
- (D) Anju Bobby George
Answer: (B) Neeraj Chopra
Explanation: Neeraj Chopra won the men’s javelin title at the 2023 World Athletics Championships in Budapest. He became the first Indian athlete to earn a gold medal at that competition, following his historic Olympic gold at Tokyo 2020.
81. Who was the first Indian to receive a Nobel Prize?
[SSC CHSL Tier-I, 22 November 2025, Shift 1]
- (A) Amartya Sen
- (B) Kailash Satyarthi
- (C) Rabindranath Tagore
- (D) Subrahmanyan Chandrasekhar
Answer: (C) Rabindranath Tagore
Explanation: Rabindranath Tagore received the 1913 Nobel Prize in Literature for his poetry, particularly Gitanjali. His recognition made him the first Indian Nobel laureate and a landmark non-European recipient, bringing Bengali literary achievement to a worldwide audience.
