science & tech MCQ section 2 Practice Questions Answers Test with Solutions & More Shortcuts

Question : 1 [SSC SO 2001]

What is ‘Barak’?

a) A peak in Kargil

b) Residential Complex of an Army Unit

c) A ship-based missile system

d) A barrage on river Brahmaputra

Answer: (c)

Barak is an Israeli surface-to-air missile (SAM) designed to be used as a ship-borne point-defence missile system against aircraft, anti-ship missiles, and UAVs. The missile of the Barak SAM system is designed to replace or complement gun-based CIWS platforms, such as the Phalanx CIWS, with a more flexible and longer-range SAM.

The missiles are mounted in an eight-cell container (which requires little maintenance) and are launched straight up. The launcher of the Barak SAM system utilizes a compact vertical launching system, with an 8-cell module weighing 1,700 kg.

Fire control is provided by an equally compact C3I system that weighs 1,300 kg, which can either operate independently or in conjunction with other onboard sensors. The radar system of C3I provides 360-degree coverage and the missiles can take down an incoming missile as close as 500 meters away from the ship.

Note: Recently, India & Israel jointly developed the most advanced long-range surface to air missile Barak-8 was successfully test-fired off the Odisha coast.

Reports suggest the missile has been increased to a maximum range of 90 km following “range upgrade discussions” between India and Israel during November 2014.

Barak 8 was jointly developed by Israel Aerospace Industries (IAI), India’s Defence Research & Development Organization (DRDO), Israel’s Administration for the Development of Weapons and Technological Infrastructure, Elta Systems, Rafael and other companies. Bharat Dynamics Limited (BDL) produces the missiles.

Question : 2

Which of the following statements are correct regarding Astra missile?

  1. It is an air-to-air missile indigenously built by DRDO.
  2. It can intercept target aircraft at supersonic speed.
  3. It uses an indigenous liquid fuel propellant.
Codes:

a) 2 only

b) 1 and 2 only

c) 1 only

d) 1 and 3 only

Answer: (b)

Astra is a single stage solid fuelled missile. It can be integrated with all the major fighter planes of Indian Air Force. Recently, it was successfully testfired from a Sukhoi-30 fighter aircraft.

Question : 3

The world’s first space telescope released by Japan for remote observation of planets named

a) SPRINT–A

b) ORBIT–A

c) SPRINT–J

d) ORBIT–5

Answer: (a)

Sprint-A is the first space telescope dedicated to observing the environment of planets in the solar system (Venus, Mars and Jupiter). The telescope is located in earth’s orbit and fluctuating between 950 km and 1150 km.

Question : 4 [SSC CGL 1999]

From where was India’s multipurpose telecommunication satellite INSAT-2E launched ?

a) Thumba

b) Kourou

c) Sriharikota

d) Baikanour

Answer: (b)

INSAT-2E is an Indian geostationary communications and weather satellite that is operated by the Indian Space Research Organisation as part of the Indian National Satellite System. It is positioned in geostationary orbit at a longitude of 83° East, from where it is used to provide communications services to Asia and Australia.

It also carries two meteorological instruments; the Very High-Resolution Radiometer, and a CCD camera capable of returning images with a resolution of one kilometre.

INSAT-2E was launched by Arianespace, using an Ariane 42P carrier rocket flying from ELA-2 at the Guiana Space Centre in Kourou. The launch occurred at 22:03 GMT on 2 April 1999.

Question : 5

Curiosity Rover captured a flower like formation on the rocks of

a) Jupiter

b) Venus

c) Mars

d) Saturn

Answer: (c)

Mars Curiosity Rover has captured an image of a flower like object embedded on the rocks of Mars. It has also photographed a snake-like rock formation on the Martian Rocks. The picture was captured by the microscope Mars Hand Lens Imager held by the robotic arm of Rover on 19 December 2012.

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