A gas will approach ideal behavior at:

low temperature and low pressure

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low temperature and high pressure

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high temperature and low pressure

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high temperature and high pressure

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Solution

The correct option is B high temperature and low pressure

At high temperature and low pressure, the gas volume becomes large and both intermolecular force as well as the molecular volume can be neglected. Under this condition postulates of kinetic theory applies appropriately and gas approaches ideal behavior.
Hence option C is correct.

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