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Question

The correct order of True/False of the following statement is:


S1: Rate of diffusion and effusion of a gas increases by increasing the pressure and decreasing the temperature.

S2: An ideal gas has van der Waal's constant a and b equal to zero.

S3: If an ideal gas in expanded adiabatically against a constant pressure, then TVγ1=constant.

A
TTF
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B
FFT
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C
TTT
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D
FFF
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Solution

The correct option is A TTF
1. Rate of diffusion αPTMA
where P is Pressure, A is Area of the hole, T is Temperature and M is Molecular weight. So, statement 1 is true.

2. For ideal gas, PV=nRT[a=0,b=0]. So, statement 2 is true.
3. The process is irreversible adiabatic. PVγ1constant So, statement 3 is false.

Option A is correct.

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