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SCIENCE AND TECH MCQs

Total Questions : 458 | Page 4 of 46 pages
Question 31. Which one of the following institutes in List I is wrongly matched with its location indicated in List II ? List-I List-II
  1.    Central Arid Zone Research Institute Jodhpur
  2.    Central Institute of Mining and Fuel Research Dhanbad
  3.    Central Drug Research Institute Kanpur
  4.    Central Building Research Institute Roorkee
 Discuss Question
Answer: Option C. -> Central Drug Research Institute Kanpur
Answer: (c)Central Building Research Institute: Roorkee, Uttarakhand, Central Arid Zone Research Institute: Jodhpur, Rajasthan, Central Drug Research Institute: Lucknow, Uttar Pradesh, and Central Institute of Mining and Fuel Research: Dhanbad, Bihar.
Question 32. At what height geo-synchr-onus orbit is located ?
  1.    1000 km
  2.    36,000 km
  3.    3600 km
  4.    6 km
 Discuss Question
Answer: Option B. -> 36,000 km
Answer: (b)
A geostationary orbit, or Geostationary Earth Orbit (GEO), is a circular orbit 35,786 kilometres above the Earth’s equator and following the direction of the Earth’s rotation.
An object in such an orbit has an orbital period equal to the Earth’s rotational period (one sidereal day) and thus appears motionless, at a fixed position in the sky, to ground observers.
Communications satellites and weather satellites are often given geostationary orbits, so that the satellite antennas that communicate with them do not have to move to track them, but can be pointed permanently at the position in the sky where they stay.
A geostationary orbit is a particular type of geosynchronous orbit.
Question 33. ‘Rosatom’ is the atomic energy agency of
  1.    Canada
  2.    Russia
  3.    France
  4.    Britain
 Discuss Question
Answer: Option B. -> Russia
Answer: (b)ROSATOM’s mission is to maintain national interests in defence, nuclear safety and nuclear power by achieving global leadership in advanced technologies, competencies and innovations. ROSATOM group is situated in Russia.
Question 34. Which of the following statement (s) is/are correct?
  1. R-22 gas is another name for Choroflourocarbon
  2. R-22 is used in refrigerators and ACs
Codes:
  1.    2 only
  2.    Both 1 and 2
  3.    1 only
  4.    Neither 1 Nor 2
 Discuss Question
Answer: Option A. -> 2 only
Answer: (a)R-22 gas is another name for Chloro-di-fluoromethane.
Question 35. INS ‘Virat’ serves the Indian Navy. It is a
  1.    Gunboat
  2.    Freighter
  3.    Aircraft carrier
  4.    Submarine
 Discuss Question
Answer: Option C. -> Aircraft carrier
Answer: (c)
INS Viraat is a Centaur class aircraft carrier currently in service with the Indian Navy. INS Viraat is the flagship of the Indian Navy, the oldest carrier in service and one of two aircraft carriers based in the Indian Ocean Region.
Viraat is currently the second largest ship in the Indian Navy after the INS Jyoti. Viraat was completed and commissioned in 1959 as the Royal Navy’s HMS Hermes and was transferred to India in 1987.
Question 36. What is the name of the Light Combat Aircraft developed by India indigenously ?
  1.    Chetak
  2.    Tejas
  3.    Astra
  4.    BrahMos
 Discuss Question
Answer: Option B. -> Tejas
Answer: (b)
The HAL Tejas is a lightweight multirole fighter developed by India. It is a tailless, compound delta wing design powered by a single engine. It came from the Light Combat Aircraft (LCA) programme, which began in the 1980s to replace India’s ageing MiG-21 fighters. Later, the LCA was officially named “Tejas”, meaning “Radiance” by then Prime Minister Atal Bihari Vajpayee.
The Tejas has a pure delta wing configuration, with no tailplanes or foreplanes, and a single dorsal fin. It integrates technologies such as relaxed static stability, fly-by-wire flight control system, advanced digital cockpit, multi-mode radar, integrated digital avionics system, advanced composite material structures and a flat rated engine.
Question 37. Beagle 2, which was found after eleven years, was a space probe to
  1.    Mars
  2.    Moon
  3.    Mercury
  4.    Venus
 Discuss Question
Answer: Option A. -> Mars
Answer: (a)Beagle was released European Space Agency’s Mars Express (MEx) orbiter in 2003. It was discovered by NASA’s Mars Reconnaissance Orbiter (MRO)
Question 38. With reference to the treatment of cancerous tumours, a tool called cyberknife has been making the news. In this context, which one of the following statements is not correct ?
  1.    It has the capability of achieving sub-millimetre accuracy.
  2.    It is a robotic image guided system.
  3.    It delivers an extremely precise dose of radiation.
  4.    It can map the spread of tumour in the body.
 Discuss Question
Answer: Option D. -> It can map the spread of tumour in the body.
Answer: (d)Cyber knife is a frameless robot radiosurgery system, and is a non-invasive alternative to surgery for the treatment of both cancerous and non cancerous tumour.
Question 39. Which of the following statements are correct regarding advance Electronic Warfare (EW) suite tested recently?
  1. It has been developed by Council of Scientific & Industrial Research (CSIR).
  2. It is fitted with a Jammer in addition to a Warner, which would enhance its capability against the RADAR system.
  3. It was tested onboard of Tejas-PV1.
Codes:
  1.    1 and 3 only
  2.    2 and 3 only
  3.    1 and 2 only
  4.    All of these
 Discuss Question
Answer: Option B. -> 2 and 3 only
Answer: (b)It has been developed by Defence Research and Development Organisation (DRDO).
Question 40. Consider the following Statements:
  1. Austrian researchers unveiled the world's first 3D-printed jet engine. This is the first of its kind 3D printed engine on 26 February 2015.
  2. The engine will help engineers in making and testing parts of jet engines in days instead of months.
  3. 3D printing makes products by layering material until a three-dimensional object is created.
Which of the statements given above is/are correct?
  1.    1 and 3 only
  2.    2 and 3 only
  3.    1 and 2 only
  4.    All of the above
 Discuss Question
Answer: Option B. -> 2 and 3 only
Answer: (b)Australian researchers unveiled the world's first 3D-printed jet engine.

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