Multiple choice

Which of the following statements is incorrect about a star?

  1. A star is an extremely hot body, which emits its own light and heat.

  2. It consists mostly of oxygen at a very high temperature.

  3. It is the fusion of atoms which is responsible for its hotness.

  4. Twinkling of stars is due to refraction of light in different layered gaseous environment on the Earth.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

It consists of mostly hydrogen at very high temperature. At this temperature, the hydrogen atoms fuse slowly and get converted into helium by releasing the large amount of energy and heat.

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