Q81. Which of the following is an air-to-air missile?
[ACC CGAT 123, August 2020]
(A) Astra
(B) Akash
(C) Becquerel
(D) Prithvi
Answer: (A) Astra
Explanation: Astra is an Indian beyond-visual-range air-to-air missile developed by DRDO. Akash is ground-based air defence, Prithvi is surface-to-surface, and becquerel is a unit of radioactive activity. Beyond-visual-range engagement combines aircraft sensors, launch guidance and terminal target tracking rather than relying solely on the pilot’s unaided eyesight.
Q80. What is the name of India’s first indigenous anti-radiation missile?
[BPSC 66th Combined Competitive Examination, prelims 2020]
(A) Tandav
(B) Trinetra
(C) Saksham
(D) Rudram
(E) None of these / more than one
Answer: (D) Rudram
Explanation: Rudram is an anti-radiation missile designed to attack radar and other radio-frequency-emitting targets. Neutralising such equipment can reduce an adversary’s ability to detect and engage friendly aircraft.
Q79. At which airbase were Rafale fighter aircraft formally inducted into the Indian Air Force?
[BPSC 66th Combined Competitive Examination, prelims 2020]
(A) Hindon
(B) Sarsawa
(C) Ambala
(D) Amritsar
(E) None of these / more than one
Answer: (C) Ambala
Explanation: The Rafale fighter aircraft were formally inducted at Ambala Air Force Station. The French-made multirole aircraft adds modern sensors, weapons and electronic-warfare capabilities to Indian Air Force operations. Modern combat aircraft combine avionics, mission computers, sensors and precision weapons into an integrated operational platform.
Q78. Which description correctly characterises Agni?
[RRB JE CBT I, 28 May 2019, Shift 2]
(A) Versatile tank
(B) Long-range gun
(C) Fighter plane
(D) Long-range missile
Answer: (D) Long-range missile
Explanation: Agni is a family of Indian ballistic missiles developed for strategic surface-to-surface missions. It is not a tank or gun, and different variants have different ranges and technical capabilities. Unlike a cruise missile, a ballistic missile relies chiefly on its momentum and gravity after its initial powered stages.
Q77. Dhanush is the naval version of which missile?
[RRB JE CBT I, 29 May 2019, Shift 3]
(A) Akash
(B) Agni
(C) Nag
(D) Prithvi
Answer: (D) Prithvi
Explanation: Dhanush is a ship-launched ballistic missile derived from the Prithvi family. It provides a naval launch option for striking surface targets, unlike the air-defence Akash or anti-tank Nag. This missile belongs to India’s early indigenous ballistic-weapons development, which helped establish the country’s strategic engineering base.
Q76. Which DRDO missile is described as a canister-launched hypersonic surface-to-surface tactical weapon?
[RRB JE CBT II, Civil Engineering, 29 August 2019, Shift 2]
(A) Astra
(B) Akash
(C) Shaurya
(D) Trishul
Answer: (C) Shaurya
Explanation: Shaurya is a road-mobile, canister-launched surface-to-surface missile. The canister improves storage and handling, while its high-speed flight profile differentiates it from surface-to-air defence and air-to-air weapons. Its technical work is coordinated with the armed forces and defence manufacturers so that laboratory advances can undergo field evaluation.
Q75. Which was India’s first indigenously constructed nuclear-powered ballistic-missile submarine?
[RRB JE, 25 May 2019, Shift 2]
(A) INS Sindhughosh
(B) INS Arihant
(C) INS Kalvari
(D) INS Shalki
Answer: (B) INS Arihant
Explanation: INS Arihant is the lead vessel of India’s indigenous nuclear-powered ballistic-missile submarine class. Its ability to carry submarine-launched ballistic missiles contributes to sea-based strategic deterrence. A ballistic-missile submarine is designed to provide survivable sea-based deterrence through concealed underwater patrols.
Q74. With which country did India collaborate to develop BrahMos?
[UPSSSC Lower PCS Prelims, 2019]
(A) France
(B) China
(C) Japan
(D) Russia
Answer: (D) Russia
Explanation: BrahMos Aerospace is the result of cooperation between India and Russia. The name combines the Brahmaputra and Moskva rivers and the missile is a supersonic cruise weapon. Cruise missiles remain powered through most of their guided flight, which distinguishes their operating principle from ballistic missiles.
Q73. The BrahMos missile has a top speed in approximately which Mach range?
[UPSSSC Mandi Inspector, 30 May 2019, Shift 1]
(A) 0.8–1
(B) 1.8–2
(C) 2.8–3
(D) 3–4.8
Answer: (C) 2.8–3
Explanation: BrahMos travels at around Mach 2.8 to Mach 3 in the commonly described operational configuration. Supersonic speed shortens the available reaction time for targeted air- or surface-defence systems. Cruise missiles remain powered through most of their guided flight, which distinguishes their operating principle from ballistic missiles.
Q72. Which anti-tank missile was tested by DRDO on 28 February 2018?
[Haryana Civil Services Prelims, 31 March 2019]
(A) Trishul
(B) Akash
(C) Nag
(D) Shaurya
Answer: (C) Nag
Explanation: Nag is an indigenous third-generation anti-tank guided missile. The missile is designed to defeat armoured vehicles, whereas Trishul and Akash are air-defence weapons and Shaurya is surface-to-surface. Its technical work is coordinated with the armed forces and defence manufacturers so that laboratory advances can undergo field evaluation.
Q71. At which shipyard was India’s indigenous aircraft carrier IAC-1 built?
[DSSSB Jail Warder, 27 June 2019, Shift 2]
(A) Mazagon Dock, Mumbai
(B) Goa Shipyard
(C) Jawaharlal Nehru Port, Mumbai
(D) Cochin Shipyard
Answer: (D) Cochin Shipyard
Explanation: The indigenous aircraft carrier, later commissioned as INS Vikrant, was constructed at Cochin Shipyard Limited in Kochi. It was designed within India’s naval ship-design framework.
