1.

{:("Column 1","Column 2"),((A) "Temperature of a system always decreases",(p)CH_(2)=CH-CH=CH_(2)),((B)((dE)/(dV))_(T)=0,(q)"internal energy increases"),(( C)"Temperature of the system increases",( r)"Ideal gas"),((D)DeltaH_("Hydrogenation experimental") lt DeltaH_("hydrogenation calculated",(s)"Adiabatic expansion"),(,(t)"Benzene")):}

Answer»

Solution :`A to s`, WHENEVER internal energy of a system DECREASES then the temperature always decreases.
In an adiabatic EXPANSION work is doen by the gas
`rArr W` is `-ve`
`rArr DeltaE =-ve`
`rArr` temperature decreases
`B to r`, For an ideal gas `((dE)/(dV))_(y)=0`
`C to q`
`D to (p,t)`


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