Science and Technology Mixed Practice — MCQs with Answers (Set 22)

Pokhran-II consisted of five devices tested across two days: three fired simultaneously on 11 May 1998, and two more on 13 May 1998.

INS Khanderi, the second Scorpene-class submarine, is set to receive an indigenous AIP retrofit during its 2026-27 refit.

Project 75I uses a German Type 214NG design with fuel-cell AIP, letting the submarine stay submerged for two weeks.

Aridhaman and Arisudan use a lengthened Arihant-class design, about 10 metres longer, letting them carry more K-4 missiles.

INS Aridhaman was commissioned on 3 April 2026, becoming India’s third operational Arihant-class nuclear-powered submarine.

INS Vagsheer, commissioned 15 January 2025, completed Project 75’s six Scorpene-class submarines built at Mazagon Dock, Mumbai.

The Defence Acquisition Council approved 5 additional S-400 squadrons under Mission Sudarshan Chakra, potentially doubling India’s total to 10 units by 2035.

The June 2026 tests validated India’s ability to intercept ICBM-class ballistic missiles with ranges approaching 5,000 km.

DRDO’s AD-1 interceptor had its maiden flight test on 2 November 2022, from Dr APJ Abdul Kalam Island, Odisha.

India’s first S-400 squadron became operational in December 2021, deployed in Punjab near the western border.

India’s BMD programme combines DRDO’s indigenous Phase-II interceptors (AD-1, AD-2) with Russia’s imported S-400 Triumf system.

Chandrayaan-4, India’s planned 2028 lunar sample-return mission, needs two separate launches to dock in orbit — exactly the capability SpaDeX proved.

ISRO completed SpaDeX’s undocking on 13 March 2025 and a second docking on 21 April 2025, proving the technique was repeatable.

Aditya-L1 captured the first-ever image of a solar flare ‘kernel’ in the lower solar atmosphere, using its Solar Ultraviolet Imaging Telescope (SUIT) payload.

ISRO successfully docked two SpaDeX satellites on 16 January 2025, making India the 4th country after the US, Russia, and China to master space docking.

India’s genuine nuclear doctrine rests on credible minimum deterrence with second-strike capability, not arsenal size or first use.

Capital-acquisition financial powers are delegated differently, not simply to the Vice-Chief of Army Staff as stated — the other three are accurate.

The Naval College of Engineering is located at INS Shivaji, Lonavala, not Kochi — the other three pairs are correct.

MALABAR began as a bilateral India-USA naval exercise (later expanded to include Japan and Australia).

The Himalayan Mountaineering Institute does not receive regular Ministry of Defence budgetary support, unlike the other three.

‘Golden Hawk’ is not an established Indian UAV name — Lakshya, Nishant, and Hale-category drones are.

HAL began as Hindustan Aircraft Limited in 1940, renamed HAL in 1964 after a merger.

A ballistic missile follows a sub-orbital ballistic path, unlike a cruise missile’s powered, guided flight.

There is no ‘South-Eastern Command’ — the Army’s commands include South-Western, Central, and the Army Training Command.

The Andaman and Nicobar Command operates as an integrated tri-service command directly under the Chiefs of Staff Committee.

The Ministry of Defence has Departments of Defence, Defence Production, Defence R&D, and Ex-Servicemen Welfare — not a separate ‘Defence Finance’ department (Finance is a division, not a full department).

The Chairman, Chiefs of Staff Committee was the senior-most of the three service chiefs, on an additional, rotating basis.

General Bipin Rawat became India’s first CDS in 2019, serving until his death in a 2021 helicopter crash.

The CDS post was created in December 2019, following the Balakot-era push for tri-service integration.

The NPT recognises only states that tested before 1 January 1967 as Nuclear Weapon States — a cutoff India’s 1974 test came after.