Space Part-1

Total Questions: 50

41. Which of the following names of animals was sent to space on November 3rd, 1957? [M.P.P.C.S. (Pre) 2010]

(a) Otolith
(b) Laika
(c) Baker
(d) Belka

Correct Answer: (b) Laika

Solution:On November 3rd, 1957 a dog, named "Laika" was sent to space through Sputnik-2 spacecraft. On 28 May, 1959 monkeys named 'Able' and 'Baker' were sent to space. On August 19, 1960 a dog named 'Belka' was sent to space through Sputnik-5 spacecraft. On 28 January, 2013 Iran sent a monkey into space by Pisgaman rocket.

42. Who is the first astronaut in space? [M.P.P.C.S. (Pre) 2010]

(a) Yuri Gagarin
(b) Alan Shephard
(c) S. Titov
(d) John Yung

Correct Answer: (a) Yuri Gagarin

Solution:On 12 April, 1961 astronaut Yuri Gagarin became the first human in space by Vostok-1 Russian spacecraft. Astronaut Alan Shephard became the first American in space less than a month later.

43. Who among the following is the world’s first woman cosmonaut: [U.P. Lower Sub. (Spl.) (Pre) 2004 , U.P.P.C.S. (Pre) 2001]

(a) Bachendri Pal
(b) Junko Tabei
(c) Valentina Tereshkova
(d) Sally Ride

Correct Answer: (c) Valentina Tereshkova

Solution:Russian astronaut Yuri Gagarin was the first male astronaut in space while Valentina Tereshkova (Russian cosmonaut) became the first woman to fly to space, when she launched on the Vostok-6 mission on 16 June, 1963. She spent almost three days in space and orbited Earth 48 times.

44. The first man who placed his foot on the Moon is : [66th B.P.S.C. (Pre) 2020]

(a) Leonov
(b) Neil Armstrong
(c) Michael Collins
(d) James Van Allen
(e) None of the above / More than one of the above

Correct Answer: (b) Neil Armstrong

Solution:Apollo-11 was the spaceflight that landed the lunar module 'Eagle' with two people on the Moon on 20th July, 1969. The NASA astronaut and mission commander Neil Armstrong was the first man who placed his foot on the Moon and his fellow astronaut pilot Buzz Aldrin joined him at the Moon's surface after a gap of about 19 minutes.

45. Who is the record holder for single longest space flight by a 'NASA' astronaut abroad the International Space Station? [U.P. Lower Sub. (Pre) 2015]

(a) Writer
(b) Physicist
(c) Astronaut
(d) Politician

Correct Answer: (c) Astronaut

Solution:Tim Peake is a European Space Agency (ESA) astronaut of British nationality and a former International Space Station (ISS) crew member. He has a background as a test pilot and a British Army Air Corps officer.

46. Which one of the following pairs is not correctly matched? [I.A.S. (Pre) 2007]

(a) Cosmic Background Explorer (COBE) - Satellite programme
(b) Falcon - Under-sea cable system
(c) Discovery - Space shuttle
(d) Atlantis - Space station

Correct Answer: (d) Atlantis - Space station

Solution:

Cosmic Background Explorer (COBE) was indeed a satellite program. It was a NASA mission dedicated to observing the cosmic microwave background radiation, the afterglow of the Big Bang.

Falcon is a well-known undersea cable system. It's part of a network of fiber optic cables laid on the seabed to carry telecommunications signals across continents.

Discovery was a significant space shuttle in NASA's fleet. It was responsible for numerous important missions, including deploying the Hubble Space Telescope.

Atlantis was also a space shuttle, just like Discovery. It was not a space station. The primary US segment of the International Space Station (ISS) includes modules like Unity, Destiny, and others, but Atlantis itself was a reusable spacecraft designed for orbital flight and returning to Earth.

Therefore, the incorrect pairing is Atlantis being identified as a space station. It was a space shuttle.

47. Tim Peake is known as which of the following? [U.P. Lower Sub. (Pre) 2015]

(a) Writer
(b) Physicist
(c) Astronaut
(d) Politician

Correct Answer: (c) Astronaut

48. Assertion (A): A space shuttle loses radio contact with the ground station for a while during landing on the Earth. [U.P.U.D.A./L.D.A. (Pre) 2002, U.P.P.C.S. (Pre) 2003]

Reason (R): As a space shuttle enters Earth's atmosphere, the shuttle's surface temperature increases, which ionizes the surrounding air.

In the context of the above statements, which of the following is correct:

(a) Both (A) and (R) are true, but (R) is the correct explanation of (A).
(b) Both (A) and (R) are true, and (R) is not the correct explanation of (A).
(c) (A) is true, but (R) is false.
(d) (A) is false, but (R) is true.

Correct Answer: (a) Both (A) and (R) are true, but (R) is the correct explanation of (A).

Solution:When a spacecraft re-enters Earth's atmosphere, it experiences air drag, creating friction. This results in an increase in the shuttle's temperature and ionizes the surrounding air. These ionized particles disturb the radio signals and the space shuttle loses radio contact with the ground station for a while during landing on the Earth.

49. Consider the following statements: [I.A.S. (Pre) 2005]

A geostationary satellite is at an approximate height of 10,000 km.
FM transmission of music is of very good quality because the atmospheric or man-made noises, which are generally frequency variations, can do little harm.

Which of the statements given above is/are correct?

(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2

Correct Answer: (b) 2 only

Solution:A geostationary or communication satellite is located in space about 36,000 km above the equator. A single geostationary satellite is on a line of sight with about 40 percent of the Earth's surface. Three such satellites, each separated by 120 degrees of longitude, can provide coverage of the entire planet. A major advantage of FM (Frequency Modulation) in a communication system is the possibility of improved signal-to-noise ratio (SNR or S/N) compared to AM (Amplitude Modulation). Additional techniques, such as pre-emphasis of higher audio frequencies with the corresponding de-emphasis in the receiver, are generally used to improve overall SNR in FM circuits. Since FM signals have constant amplitude, FM receivers normally have limiters that remove AM noise, further improving SNR.

50. The satellite used for telecommunication relay is kept in a geostationary orbit. A satellite is said to be in such an orbit when: [I.A.S. (Pre) 2011]

The orbit is geosynchronous.
The orbit is circular.
The orbit lies in the plane of the Earth's equator.
The orbit is at an altitude of 22,236 km.

Select the correct answer using the codes given below:

(a) 1, 2, and 3
(b) 1, 3, and 4
(c) 2 and 4
(d) 1, 2, 3, and 4

Correct Answer: (a) 1, 2, and 3

Solution:A geostationary orbit is a circular orbit, 35,786 kilometers (22,236 mi.) above the Earth's equator. Sometimes it is also known as Clark's orbit. A satellite in a geostationary orbit appears to remain in the same spot in the sky all the time. It is also referred to as a geosynchronous equatorial orbit (GEO).

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