Questions
Pressure versus temperature graphs of an ideal gas are as shown in figure. Choose the wrong statement
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
detailed solution
Correct option is C
ρ=PMRTDensity ρ remains constant when P/T or volume remains constant.In graph (i), pressure is increasing at constant temperature hence volume is decreasing so density is increasing. In graphs (ii) and (iii) volume is increasing. Hence, density is decreasing. Note that volume would has been constant in case the straight line in graph (iii) had passed through origin.Talk to our academic expert!
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When the temperature of a metal wire is increased from C to C, its length increased by 0.02%. The percentage change in its mass density will be closest to:
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