Defence Technology (Physics) Part-I

Total Questions: 50

41. With the co-operation of which one of the following countries, a pilotless helicopter is being developed for Indian Navy? [U.P.P.C.S. (Mains) 2008]

Correct Answer: (c) Israel
Solution:

The unmanned helicopter is jointly developed by Hindustan Aeronautics and Israel Aircraft Industries.

42. Which French company supplied Rafale fighter jets to India? [67ᵗʰ B.P.S.C. (Pre) 2022]

Correct Answer: (b) Dassault Aviation
Solution:

French company Dassault Aviation supplied Rafale fighter jets to India. They delivered 36 'Rafale' fighter jets to the Indian Air Force (IAF). IAF received the delivery of the 36ᵗʰ Rafale in December, 2022, completing the deal signed in 2016.

43. Which of the following is a modern tank? [I.A.S. (Pre) 1996]

Correct Answer: (c) Arjun
Solution:

Arjun is an extremely subversive modern main battle tank developed by DRDO with the help of Bharat Heavy Electricals Ltd., Bharat Earth Movers Limited and Heavy Vehicle Factory (Tamil Nadu).

44. The first indigenously assembled T-90 S battle tank has been named: [Uttarakhand P.C.S. (Mains) 2002]

Correct Answer: (c) Bhishma
Solution:

The first indigenously assembled T-90S battle tank has been named 'Bhishma'.

45. Consider the following statements in context to Agni (II) missile which was launched in space on January 25, 2002. [U.P. Lower Sub. (Spl.) (Pre) 2002]

1. It is a surface-to-surface missile with a range of 700 km.

2. It was launched at 8:45 am in space from Wheeler's Island, Orissa.

3. It is a two-stage missile whose first phase has a liquid propellant rocket motor and in second, has a solid propellant rocket motor.

Correct Answer: (e) *
Solution:

Agni-II is a medium range ballistic missile with a range of 2000-2500 km. These missiles use solid propellant in its two stages. Nuclear capable AGNI-I missile was tested by DRDO at the Interim Test range in Chandipur on 25 January, 2002 at 8:50 am not AGNI-II. AGNI-I is a solid-fuel first stage missile with a range of 700-1250 Km.

46. Agni-II missile was launched from: [U.P.P.C.S. (Mains) 2004]

Correct Answer: (b) Chandipur
Solution:

Agni-II, a surface-to-surface medium-range ballistic missile was test fired from the Wheeler's Island near the Interim test range at Chandipur, Odisha on 17 January, 2001. It has a range of 2000-2500 km. India on 16 November, 2019 conducted successfully the first night trial of Agni-II.

47. The approx. range of Agni-II missile is- [I.A.S. (Pre) 2001]

Correct Answer: (b) 2000 km.
Solution:

Agni-II, a surface-to-surface medium-range ballistic missile was test fired from the Wheeler's Island near the Interim test range at Chandipur, Odisha on 17 January, 2001. It has a range of 2000-2500 km. India on 16 November, 2019 conducted successfully the first night trial of Agni-II.

48. With reference to Agni-IV Missile, which of the following statements is/are correct? [I.A.S. (Pre) 2014]

1. It is a surface-to-surface missile.

2. It is fuelled by liquid propellant only.

3. It can deliver one-tonne nuclear warheads about 7500 km away.

Select the correct answer using the code given below.

Correct Answer: (a) 1 only
Solution:

Agni-IV is the fourth in the Agni series of missiles which was earlier known as Agni-II Prime. It is to be noted that Agni missiles are long range, nuclear weapon capable surface to surface ballistic missiles.

Agni-IV has two stages of solid propulsion and a payload with re-entry heat shield. Agni-IV can take a warhead of 1 ton and it is 4000 km range nuclear capable ballistic missile. So only statement (1) is correct.

49. Which one of the following facts about Agni-5 missile is not correct? [U.P.P.C.S. (Pre) 2015]

Correct Answer: (d) It is not exclusively indigenous.
Solution:

The Agni-V missile, having a range of 5,000 km is a fully indigenous missile. Therefore option (d) is incorrect. Agni-V is about 17 metres long, 2 metres wide and has a launch weight of around 50 tons. The missile can carry a nuclear warhead of more than one ton.

50. 'INDRA' is- [U.P.Lower Sub. (Pre) 2003-04]

Correct Answer: (c) Radar
Solution:

INDRA is a series of 2D radars meant for Army and Air Force. This was the first high power radar developed by DRDO. This system is also used by Sri Lanka.