Question -
Pressure versus temperature graphs of an ideal gas are as shown in figure. Choose the wrong statement
Options:
A .  Density of gas is increasing in graph (i)
B .  Density of gas is decreasing in graph (ii)
C .  Density of gas is constant in graph (iii)
D .  None of these
Answer: Option C : C (v) μ = PMRT Density μ remains constant when PT or volume remains constant. In graph (i) Pressure is increasing at constant temperature hence volume is decreasing so density is increasing. Graphs (ii) and (iii) volume is increasing hence, density is decreasing. Not that volume whould had been constant in case the stright line in graph (iii) had passed through origin
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