Tag: evs

Questions Related to evs

When energy of a satellite-planet system is positive then satellite will :

evs search of life outside earth space research and satellites artificial satellites space missions and artificial satellites

  1. Move around planet in circular orbit

  2. Move around planet in elliptical orbit

  3. Escape out with minimum speed

  4. Escape out with speed greater than escape velocity

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Correct Option: A

Remote imaging satellites are placed in geostationary orbit. This statement is

evs search of life outside earth space research and satellites artificial satellites space missions and artificial satellites

  1. True

  2. False

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Correct Option: A
Explanation:

Answer is A.
Geostationary satellites are positioned at an height above the Earth about $36,000\ km$. At this height, they rotate around the Earth at the same speed as the Earth rotates around its axis, so in effect remaining stationary above a point on the Earth (normally directly overhead the equator).
As they remain stationary, they are ideal for use as communications satellites and also for remote imaging as they can repeatedly scan the same points on the Earth beneath them.
Their great height is that they can view the whole Earth disk below them, rather than a small subsection, and they can scan the same area very frequently.
Hence, the statement is true.

Transponder is a device in satellites to: 

evs space missions space research and satellites artificial satellites space missions and artificial satellites launching of an artificial satellites around the earth launching of satellite india’s space programmes

  1. correct the orbit of satellite

  2. photograph features of the Earth

  3. receive and broadcast audio and video signals

  4. spy on criminals

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Correct Option: C
Explanation:

To receive and broadcast audio and video signals
Transponders basically receive and transfer signals in satellite communication. Hence, it can be used to broadcast received audio and video signals.

The first satellite to put into space by India is:

evs search of life outside earth space research and satellites artificial satellites space missions and artificial satellites

  1. INSAT

  2. Aryabhatta

  3. Rohini

  4. Bhaskara

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Correct Option: B
Explanation:

Aryabhatta
The first satellite by ISRO into the space was Aryabhatta launched on April 19, 1975.

The process of acquiring information about an object or phenomenon without making actual physical contact within, as opposed to onsite observation is called :
evs space missions space research and satellites artificial satellites space missions and artificial satellites launching of an artificial satellites around the earth launching of satellite india’s space programmes

  1. Remote Sensing

  2. Actuation

  3. Transducing

  4. None of the above

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Correct Option: A
Explanation:

Remote Sensing is the process of acquiring Information about an object or phenomenon without making actual physical contact within, as opposed to onsite observation.

This often requires the use of aerial sensor technologies.

A celestial body that revolves around a planet is known as _____. 

evs space missions space research and satellites artificial satellites space missions and artificial satellites launching of an artificial satellites around the earth launching of satellite india’s space programmes

  1. $Constellation$

  2. $Satellites$

  3. $Sun$

  4. None of these

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Correct Option: B

The planet having the largest number of satellites amongst the following is

evs space travel space research and satellites artificial satellites space missions and artificial satellites launching of an artificial satellites around the earth launching of satellite india’s space programmes

  1. Jupiter

  2. Saturn

  3. Uranus

  4. Mars

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Correct Option: A
Explanation:

Jupiter is having largest no. of satellites.

Identify the taste of karela.

evs science of kitchen sense of touch, smell and taste types of taste components and importance of food

  1. Sour

  2. Salty

  3. Bitter

  4. Spicy

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Correct Option: C
Explanation:
  • The upper surface of the tongue has small projections called papillae, some of which bear taste buds.
  • About 50 -150 taste cells are found in a taste bud. These cells detect all 4 tastes i.e sweet, sour, salty and bitter.
  • The taste of karela is bitter because it contains a compound called lectin. Lectin reduces blood glucose concentrations by acting on peripheral tissues and suppressing appetite. Hence the taste of karela is bitter.
  • So, the correct answer is 'Bitter'.

Which of the following is not a type of taste?

evs science of kitchen sense of touch, smell and taste types of taste components and importance of food

  1. Sour

  2. Bitter

  3. Umami

  4. None of the above

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Correct Option: D
Explanation:
Specific chemicals in solution pass into the taste bud through the taste pore to come in contact with the protein receptor sites on the microvilli of the gustatory receptor cells. The latter set up nerve impulses in the sensory nerve fibres. The nerve fibres transmit the impulses to the taste centre in the brain where the sensation of taste arises. The facial nerve serves the anterior two-thirds of the tongue, the glossopharyngeal nerve serves the posterior one-third of the tongue. 
A. Sour is found on the sides of the tongue.
B. Bitter is found on the base of the tongue.
C. Umami or savory found on all region of the tongue.
So, the correct answer is 'None of the above'.

On which part of the tongue, most of the taste get detected?

evs science of kitchen sense of touch, smell and taste types of taste components and importance of food

  1. Front

  2. Back

  3. Left

  4. Right

Show answer
Correct Option: A
Explanation:
  • The upper surface of the tongue has small projections called papillae, some of which bear taste buds.
  • About 50 -150 taste cells are found in a taste bud. These cells detect all 4 tastes i.e sweet, sour, salty and bitter.
  • The taste buds for "sweet" are on the tip of the tongue; the "salt" taste buds are on either side of the front of the tongue; "sour" taste buds are behind this; and "bitter" taste buds are way in the back.
  • Most of the taste gets detected in the front part of the tongue because most of the taste buds are present in the front region of the tongue.
  • So, the correct answer is 'Front'.