## STATES OF MATTER QUIZ-8

IIT JEE exam which consists of JEE Main and JEE Advanced is one of the most important entrance exams for engineering aspirants. The exam is held for candidates who are aspiring to pursue a career in the field of engineering and technical studies. Chemistry is important because everything you do is chemistry! Even your body is made of chemicals. Chemical reactions occur when you breathe, eat, or just sit there reading. All matter is made of chemicals, so the importance of chemistry is that it's the study of everything.

Q1. The temperature at which a real gas obeys the ideal gas laws over a wide range of pressure is called
•  Critical temperature
•  Boyle temperature
•  Inversion temperature
•  Reduced temperature
Solution:
Q2. According to Graham’s law, at a given temperature, the ratio of the rates of diffusion rA⁄rB of gases A and B is given by
•  (PA/PB) (MA/MB)1⁄2
•  (MA/MB) (PA/PB)1⁄2
•  (PA/PB) (MB/MA)1⁄2
•  (MA/MB) (PB/PA)1⁄2
Solution:
Q3.  When is deviation more in the behavior of a gas from the ideal gas equation PV=nRT?
•  At high temperature and low pressure
•  At low temperature and high pressure
•  At high temperature and high pressure
•  At low temperature and low pressure
Solution:
Q4.  The density of neon will be highest at
•  STP
•  0℃,2 atm
•  273℃,1 atm
•  273℃,2 atm
Solution:
Q5.It is eaiser to liquefy oxygen than hydrogen because
•  Oxygen has a higher critical temperature and lower inversion temperature than hydrogen
•  Oxygen has a lower critical temperature and higher inversion temperature than hydrogen
•  Oxygen has a higher critical temperature and higher inversion temperature than hydrogen
•  The critical temperature and inversion temperature of oxygen is very low
Solution:
Q6. The density of a gas at 27℃ and 1 atm is d. Pressure remaining constant, at which of the following temperature will its density become 0.75d?
•  20℃
•  30℃
• 400 K
•  300 K
Solution:
Q7.Equal weights of methane and hydrogen are mixed in an empty container at 25℃. The fraction of the total pressure exerted by hydrogen is
•  1/2
•  8/9
•  1/9
•  16/17
Solution:
Q8.A helium atom is two times heavier than a hydrogen molecule. At 298 K, the average kinetic energy of a helium atom is
•  Two times that of a hydrogen molecule
•  Same as that of a hydrogen molecule
•  Four times that of a hydrogen molecule
•  Half that of a hydrogen molecule
Solution:
Q9.At low pressures, the van der Waals equation is written as[P+a/V2]V=RT. The compressibility factor is then equal to
•  (1-a/RTV)
•  (1-RTV/a)
•  (1+a/RTV)
•  (1+RTV/a)
Solution:
Q10. Which of the following expressions correctly represents the relationship between the average molar kinetic energy, KE of CO2 and N2 molecules at the same temperature?
•  KECO = KEN2
•  KECO > KEN2
•  KECO < KEN2
•  Cannot be predicted unless volumes of the gases are given
Solution:

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STATES OF MATTER Quiz-8