Tag: evs

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Questions Related to evs

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

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

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
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.

Multiple choice 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

Transponder is a device in satellites to: 

  1. correct the orbit of satellite

  2. photograph features of the Earth

  3. receive and broadcast audio and video signals

  4. spy on criminals
Reveal answer Fill a bubble to check yourself
C Correct answer
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.

Multiple choice 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
The process of acquiring information about an object or phenomenon without making actual physical contact within, as opposed to onsite observation is called :

  1. Remote Sensing

  2. Actuation

  3. Transducing

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
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.

Multiple choice 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

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

  1. $Constellation$
  2. $Satellites$
  3. $Sun$

  4. None of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A celestial body that revolves around a planet is defined as a satellite (natural or artificial).

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

Identify the taste of karela.

  1. Sour

  2. Salty

  3. Bitter

  4. Spicy
Reveal answer Fill a bubble to check yourself
C Correct answer
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'.
Multiple choice evs science of kitchen sense of touch, smell and taste types of taste components and importance of food

Which of the following is not a type of taste?

  1. Sour

  2. Bitter

  3. Umami

  4. None of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
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'.
Multiple choice evs science of kitchen sense of touch, smell and taste types of taste components and importance of food

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

  1. Front

  2. Back

  3. Left

  4. Right
Reveal answer Fill a bubble to check yourself
A Correct answer
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'.