A gas obeys `P(V-b)=RT`. Which of the following are correct about this gas?
(`I`) Isochoric curves have slop `=(R )/(V-b)`.
(`II`) Isobaric curves have slope `(R )/(P)` and intercept `b`.
(`III`) For the gas compressibility factor `=1+(Rb)/(RT)`.
(`IV`) The attraction forces are overcome by repulsive forces.

Options

A. `I`
B. `II`, `III`
C. `III`
D. `I`, `II`, `III`, `IV`

Explanation

To solve the question regarding the gas that obeys the equation \( P(V-b) = RT \), we will analyze each statement provided in the question step by step.

### Step 1: Analyze the Isochoric Curves
Isochoric processes occur at constant volume, which means \( V \) is constant. From the equation \( P(V-b) = RT \), we can express pressure \( P \) as:

\[ P = \frac{RT}{V-b} \]
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