36. which of the following layers of the earth is believed to have the heaviest mineral materials of highest density ?

1. 1. Central core

   
   
   

   2. Crust

   
   
   

   3. Mantle

   
   
   

   4. Both (b) and (c)

   
   
   

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   NA

   Correct Option: A

   NA

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37. What is meant by the eclipse of moon ?

1. 1. It is path along which the moon revolves.

   
   
   

   2. When the moon comes between the Sun and the Earth it cause the shadows of the moon to fall on Earth.

   
   
   

   3. It occurs when the Earth comes between the sun and the moon and the centres of all three are on the same straight line.

   
   
   

   4. For any place, it is the average angle made by a line drawn from the moon to place and horizontal at midnight.

   
   
   

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   NA

   Correct Option: B

   NA

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38. The Earth revolves around the sun in an elliptical path and the sun is located at one focus of the ellipse. Imagine a situation in which the Earth goes around the Sun on a circular path. which one among the following would result in under that situation

1. 1. It would not make any difference

   
   
   

   2. Difference between seasons will be reduced

   
   
   

   3. The Earth would become very hot

   
   
   

   4. The Earth would become very cold

   
   
   

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   NA

   Correct Option: B

   NA

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39. The 'Zoidiac' sign or 'house of heaven' are named after

1. 1. Star signs

   
   
   

   2. Sky is cloudy

   
   
   

   3. Ecliptic system

   
   
   

   4. Constellations through which the epliptic passes

   
   
   

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   NA

   Correct Option: D

   NA

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40. Which part of the earth's surface receive the highest amount of insolation ?

1. 1. Tropical deserts

   
   
   

   2. Equatorial region

   
   
   

   3. Savanna region

   
   
   

   4. No such criteria

   
   
   

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   NA

   Correct Option: A

   NA

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