1.

If C_(p) and C_(v) denote the specific heats of nitrogen per unit mass at constant pressure and constant volume respectively, then

Answer»

`C_(p)-C_(v)=(R )/(14)`
`C_(p)-C_(v)=R`
`C_(p)-C_(v)=28 R`
`C_(p)-C_(v)=(R )/(28)`

Solution :For 1 g of nitrogen
`C_(p)-C_(v)=r," where "r=(R )/(M)` is gas constant.
For 1 g of nitrogen
Molecules WT. of nitrogen M=28 g
`therefore C_(p)-C_(v)=(R )/(28)`
So, CORRECT CHOICE is (d).


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