Geology - Earth Movements, Latitude, Longitude and Time

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1.
One minute of arc of latitude along any meridian is also known as__?
2.
How much of longitude account for one hour?
3.
"Medicine line” is another name of which among the following circles of latitude?
4.
On around which among the following dates, Earth is at it’s farthest from the Sun?
5.
Which of the following observations about Equinox is / are correct?
  1. It occurs twice a year
  2. The length of day and night is nearly equal all over the world
  3. Equinox marks the transition from winter to spring all over world
Select the correct option from the codes given below:
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