Question

Read the given paragraph and select the option which correctly fills the blanks.
When stars run out of fuel in their core, they bloat into $\underset{–}{\left(i\right)}$ giants. After a few million years, the outer layers begin to 'puff off', forming a planetary nebulae, leaving behind only the dead core of mostly $\underset{–}{\left(ii\right)}$ and $\underset{–}{\left(iii\right)}$. They then become $\underset{–}{\left(iv\right)}$ dwarf stars.

• A. (i) Blue, (ii) Oxygen, (iii) Carbon, (iv) Red
• B. (i) Red, (ii) Methane (iii) Oxygen (iv) Blue
• C. (i) White, (ii) Carbon, (iii) Methane, (iv) Red
• D. (i) Red, (ii) Carbon, (iii) Oxygen (iv) White

Answer 1

The correct option is D (i) Red, (ii) Carbon, (iii) Oxygen (iv) White

The process given below is the process of the death of a star:

When stars run out of fuel in their core, they bloat into red giants. After a few million years, the outer layers begin to 'puff-off', forming a planetary nebula, leaving behind only the dead core of mostly carbon and oxygen. Finally, the core will cool into a white dwarf and then eventually into a black dwarf. This entire process will take a few billion years.