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Assertion: When a real gas is allowed to...

Assertion: When a real gas is allowed to expand adiabatically through a fine hole from a region of high presssure to a region of low pressure, the temperature of gas falls in a completely insulated container.
Reason: Work is done at the cost of internal energy of the gas.

A

If both (A) and (R ) are correct, and (R ) is the correct explanation for (A).

B

If the both (A) and (R ) are correct, but(R ) is not a correct explanation for (A).

C

If (A) is correct, but (R ) is incorrect.

D

If (A) is incorrect, but (R ) is correct.

Text Solution

AI Generated Solution

To solve the question regarding the assertion and reason, we will break it down step by step: ### Step 1: Understand the Assertion The assertion states that when a real gas expands adiabatically through a fine hole from a region of high pressure to a region of low pressure, the temperature of the gas falls in a completely insulated container. **Explanation**: In an adiabatic process, there is no heat exchange with the surroundings. When a gas expands from high pressure to low pressure, it does work against the external pressure. This work is done at the expense of the internal energy of the gas, which leads to a decrease in temperature. ### Step 2: Understand the Reason ...
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Knowledge Check

  • Assertion : Physisorption of a gas adsorbed at low temperature may change into chemisorption at a high temperature. Reason : Usually low pressure is also favourable for chemisorption

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    D
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