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| Q. |
Hydrogen cannot be liquefied at room temperature by the application of pressure, because |
| A. | It is a diatomic molecule |
| B. | It has high viscosity |
| C. | Its critical temperature is lower than the normal room temperature |
| D. | Its thermal conductivity is high |
| E. | It has low density |
| Answer» C. Its critical temperature is lower than the normal room temperature | |
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