Q. Consider the following statements regarding plasma:
1.It is a state consists of super energetic and super excited particles.
2.The fluorescent tube and neon sign bulbs consist of plasma.
Which of the statements given above is/are correct?

[A] 1 only

[B] 2 only

[C] Both 1 and 2

[D] Neither 1 nor 2

Answer: C
Notes:

Explanation: Plasma: The state consists of super energetic and super excited particles. These particles are in the form of ionised gases.

  • The fluorescent tube and neon sign bulbs consist of plasma. Inside neon sign bulb there is neon gas and inside a fluorescent tube there is helium gas or some other gas.
  • The gas gets ionised, that is, gets charged when electrical energy flows through it. This charging up creates a plasma glowing inside the tube or bulb.
  • The plasma glows with a special colour depending on the nature of gas. The Sun and the stars glow because of the presence of plasma in them.
  • The plasma is created in stars because of very high temperature.

Source: Science NCERT 9th Class