| [ A ] Solid in a gas |
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| [ B ] Liquid in a gas | |
| [ C ] Gas in a solid | |
| [ D ] Gas in a gas |
| [ A ] Solid in a gas |
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| [ B ] Liquid in a gas | |
| [ C ] Gas in a solid | |
| [ D ] Gas in a gas |
| Answer : Option A |
| Explanation : |
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