McqMate
| Q. |
The fourth state of matter is known as |
| A. | Gas |
| B. | Vapour |
| C. | Plasma |
| D. | Electrons |
| Answer» C. Plasma | |
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Explanation: The characteristics of plasmas are significantly different from those of ordinary neutral gases so that plasmas are considered a distinct "fourth state of matter, plasma is a state of matter similar to gas in which a certain portion of the particles is ionized. Heating a gas may ionize its molecules or atoms (reduce or increase the number of electrons in them), thus turning it into a plasma, which contains charged particles: positive ions and negative electrons or ions. |
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