Multiple choice

Corona is

  1. Halo of hot gases around the sun

  2. Halo of luminous gases the moon

  3. Halo of hot gases around the moon

  4. Halo of luminous gases around sun seen only on the ave of solar eclipse
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A Correct answer
Explanation

The corona is the Sun's outer atmosphere consisting of extremely hot plasma (temperatures in millions of degrees). It appears as a halo or crown around the Sun and is most visible during total solar eclipses or with specialized telescopes called coronagraphs.

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