46 UPSC Civil Services Mains 2021 Questions asked from Civil Services Chronicle Hindi

Dark Matter

Which of the following statements are correct with respect to Dark Matter?

  1. Dark Matter emits no light and cannot be seen directly
  2. Dark Matters are stars or planets.
  3. Astronomers do not detect gamma rays produced by them.
  4. Dark matter is black hole.

Select the correct answer using the codes given below:

A
2, 3 and 4
B
1, 3 and 4
C
1 and 3
D
1, 2, 3 and 4
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