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NEET-XII-Chemistry
Previous Year Paper year:2017
- #84A gas at 350 K and 15 bar has molar volume
20 percent smaller than that for an ideal gas
under the same conditions. The correct
option about the gas and its compressibility
factor (Z) is :
(1) Z > 1 and attractive forces are dominant
(2) Z > 1 and repulsive forces are dominant
(3) Z < 1 and attractive forces are dominant
(4) Z < 1 and repulsive forces are dominantdigAnsr: 3Ans : ( 3 )
Sol. • Compressibility factor(Z) = real
ideal
V
V
∵ V
real
< V
ideal
; Hence Z < 1
• If Z < 1, attractive forces are dominant
among gaseous molecules and
liquefaction of gas will be easy.