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Solar System - General Awareness Multiple Choice Questions and Answers

Questions
21 Select the correct statement with respect to solar system ?
A The Earth is the densest of all the planets in our solar system.
B The predominant element in the composition of Earth is silicon.
C The Sun contains 75 percent of the mass of the solar system.
D The diameter of the Sun is 190 times that of the Earth.

Answer: Option [A]

The correct answer is The Earth is the densest of all the planets in our solar system.

22 Which of the following statements is/are correct ?
I. In comparison to the Jupiter, planet Earth displays eclipses more frequently.
II. On Mars, only partial solar eclipses are possible.

Select the correct answer using the code given below :

A 1 only
B 2 only
C Both 1 and 2
D Neither 1 nor 2

Answer: Option [D]

The correct answer is Neither 1 nor 2.

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23 Which of the following gases is most predominant in the Sun ?
A Mithen
B Nitrogen
C Hydrogen
D Ozone

Answer: Option [C]

The correct answer is Hydrogen.

The most predominat gas is sum is hydrogen. The percentage of abundance of elements in sum is as follows:

  • Hydrogen : 91.2%
  • Helium :8.7%
  • Oxygen : 0.078%
24 Revolution around the Sun is maximum for :
A Venus
B Jupiter
C Mars
D Saturn

Answer: Option [B]

Revolution around the Sun is maximum for Jupiter. Jupiter takes 12 years for one revolution where as earth takes 1 year, Mars takes 687 days and Venus takes 263 days.

25 Consider the following statements :
I. The albedo of an object determines its visual brightness when viewed with reflected light.
II. The albedo of Mercury is much greater than the albedo of the Earth.

Which of the following statements given above is/are correct?

A I only
B II only
C both I and II
D neither I nor II

Answer: Option [A]

The correct answer is I only.

The albedo of an object will determine its visual brightness when viewed with reflected light. For example, the planets are viewed by reflected sunlight and their brightness depends upon the amount of light received from the sun and their albedo.

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