A

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Q. In the life cycle of a star , the stage nebula refers to ?

  • (A) the stage when the outer layers expand, cool down and become less bright
  • (B) the last stage of its life
  • (C) a cloud of dust and hydrogen
  • (D) the outer shell of a star
  • Correct Answer - Option(C)
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Explanation by: Admin
Life Cycle of a Star. Stars are formed in clouds of gas and dust, known as nebulae. however, the hydrogen fuel that powers the nuclear reactions within stars will begin to run out, and they will enter the final phases of their lifetime.

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