| List-$I$ | List-$II$ |
| $A$. $UV$ rays | $(i)$ Diagnostic tool in medicine |
| $B$. $X-$rays | $(ii)$ Water purification |
| $C$. Microwave | $(iii)$ Communication,Radar |
| $D$. Infrared wave | $(iv)$ Improving visibility in foggy days |
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| List-$I$ | List-$II$ |
| $(a)$ $10\, km$ height over earth's surface | $(i)$ Thermosphere |
| $(b)$ $70\, km$ height over earth's surface | $(ii)$ Mesosphere |
| $(c)$ $180\, km$ height over earth's surface | $(iii)$ Stratosphere |
| $(d)$ $270\, km$ height over earth's surface | $(iv)$ Troposphere |
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