Select the correct statement(s) :

Options

A. At Boyle's temperature a real gas behaves like an ideal gas at low pressure
B. Above critical conditions, a real gas behave like an ideal gas
C. For hydrogen gas 'b' domainates over 'a' at all temperatures
D. AT high pressure van der Waals' constant 'b' domainates over 'a'

Explanation

To solve the question of selecting the correct statement(s) regarding the behavior of real gases, let's analyze the statements step by step.

### Step 1: Understanding Ideal and Real Gases
- **Ideal Gas**: An ideal gas follows the gas laws perfectly and has no intermolecular forces. It behaves ideally at high temperature and low pressure.
- **Real Gas**: A real gas deviates from ideal behavior due to intermolecular forces and finite molecular volume.

### Step 2: Analyzing the Statements
1. **At Boil's Temperature, a Real Gas Behaves Like an Ideal Gas at Low Temperature, Low Pressure**:
- This statement is **partially true**. A real gas can behave like an ideal gas at its boiling point, but it does not necessarily require low pressure. It can behave ideally under certain conditions regardless of pressure.

2. **Above Critical Condition, a Real Gas Behaves Like an Ideal Gas**:
- This statement is **false**. At critical conditions, a real gas does not behave like an ideal gas. In fact, at and above the critical point, the gas shows significant deviations from ideal behavior.

3. **Hydrogen Gas (H2) Has More Repulsive Forces than Attractive Forces**:
- This statement is **true**. Hydrogen gas has very weak intermolecular forces due to its small size and low mass. Therefore, at all temperatures, the repulsive forces (denoted by B) dominate over the attractive forces (denoted by A).

4. **At High Temperature and High Pressure, B Dominates Over A**:
- This statement is **true**. At high pressures, the volume occupied by gas molecules becomes significant, and repulsive forces become more relevant than attractive forces. Hence, B dominates over A.

### Conclusion
Based on the analysis:
- The correct statements are:
- Hydrogen gas has more repulsive forces than attractive forces.
- At high temperature and high pressure, B dominates over A.

### Final Answer
- The correct statements are:
- Hydrogen gas (H2) has more repulsive forces than attractive forces.
- At high temperature and high pressure, B dominates over A.

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