Multiple choice

As the temperature increases, the thermal conductivity of a gas

  1. Increases

  2. Decreases

  3. Remains constant

  4. Increases up to a certain temperature and then decreases
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A Correct answer
Explanation

Correct option is (1). The kinematic theory of gases predicts & the experiment confirms that the thermal conductivity of gases is proportional to the square root of thermodynamic temperature. thermal conductivity of gases$\alpha$ $(temperature)^{\frac{1}{2}}$ as temp  $\uparrow$        Conductivity of gas $\uparrow$

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