## STATES OF MATTER QUIZ-12

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. Statement 1: The pressure of a fixed amount of an ideal gas is proportional to its temperature
Statement 2: Frequency of collisions and their impact both increase in proportion to the square root of temperature
•  Statement 1 is True, Statement 2 is True; Statement 2 is correct explanation for Statement 1
•  Statement 1 is True, Statement 2 is True; Statement 2 is not correct explanation for Statement 1
•  Statement 1 is True, Statement 2 is False
•  Statement 1 is False, Statement 2 is True
Solution:
Q2. Statement 1: A lighter gas diffuse more rapidly than a heavier gas
Statement 2: At a given temperature, the rate of diffusion of a gas is inversely proportional to the square root of its density
•  Statement 1 is True, Statement 2 is True; Statement 2 is correct explanation for Statement 1
•  Statement 1 is True, Statement 2 is True; Statement 2 is not correct explanation for Statement 1
•  Statement 1 is True, Statement 2 is False
•  Statement 1 is False, Statement 2 is True
Solution:
Q3.  Statement 1: Andrew’s worked on a temporary gas (so called at that time) and derived the condition to liquefy the permanent gases (so called at that time).
Statement 2: Andrew studied isotherms of CO2 and obtained the required condition for liquefaction of gas as Tgas < Tc (critical temperature).
•  Statement 1 is True, Statement 2 is True; Statement 2 is correct explanation for Statement 1
•  Statement 1 is True, Statement 2 is True; Statement 2 is not correct explanation for Statement 1
•  Statement 1 is True, Statement 2 is False
•  Statement 1 is False, Statement 2 is True
Solution:
Q4.  Statement 1: 1/4 Of the gas is expelled if air present in an open vessel is heated from 27℃ to 127℃.
Statement 2: Rate of diffusion of a gas is inversely proportional to the square root of its molecular mass.
•  Statement 1 is True, Statement 2 is True; Statement 2 is correct explanation for Statement 1
•  Statement 1 is True, Statement 2 is True; Statement 2 is not correct explanation for Statement 1
•  Statement 1 is True, Statement 2 is False
•  Statement 1 is False, Statement 2 is True
Solution:
Q5. Statement 1: Compressibility factor (Z) for non ideal gases is always greater than 1
Statement 2: Non-ideal gases always exert higher pressure than expected

•  Statement 1 is True, Statement 2 is True; Statement 2 is correct explanation for Statement 1
•  Statement 1 is True, Statement 2 is True; Statement 2 is not correct explanation for Statement 1
•  Statement 1 is True, Statement 2 is False
•  Statement 1 is False, Statement 2 is True
Solution:
Q6. Statement 1: The compressibility factor less than one is due to the van der Waals’ constant 'a' of a real gas
Statement 2: The compressibility factor less than one is due to excluded volume of the gas
•  Statement 1 is True, Statement 2 is True; Statement 2 is correct explanation for Statement 1
•  Statement 1 is True, Statement 2 is True; Statement 2 is not correct explanation for Statement 1
• Statement 1 is True, Statement 2 is False
•  Statement 1 is False, Statement 2 is True
Solution:
Q7. Statement 1: H2 and He show same ideal gas behaviour
Statement 2: All real gases deviate from ideal gas behaviour at low temperature and high pressure
•  Statement 1 is True, Statement 2 is True; Statement 2 is correct explanation for Statement 1
•  Statement 1 is True, Statement 2 is True; Statement 2 is not correct explanation for Statement 1
•  Statement 1 is True, Statement 2 is False
•  Statement 1 is False, Statement 2 is True
Solution:
Q8. Statement 1: Van der Waals equation is applicable only to non-ideal gases
Statement 2: Ideal gases obey the equation PV=nRT
•  Statement 1 is True, Statement 2 is True; Statement 2 is correct explanation for Statement 1
•  Statement 1 is True, Statement 2 is True; Statement 2 is not correct explanation for Statement 1
•  Statement 1 is True, Statement 2 is False
•  Statement 1 is False, Statement 2 is True
Solution:
Q9.Statement 1: The value of van der Waals’ constant 'a' is larger for NH3 than for N2.
Statement 2: H-bonding is present in NH3.
•  Statement 1 is True, Statement 2 is True; Statement 2 is correct explanation for Statement 1
•  Statement 1 is True, Statement 2 is True; Statement 2 is not correct explanation for Statement 1
•  Statement 1 is True, Statement 2 is False
•  Statement 1 is False, Statement 2 is True
Solution:
Q10. Statement 1: n2 a/V2 in van der Waals’ equation is a measure of the inter molecular forces
Statement 2: Easily condensable gases have comparatively higher values of the van der Waals’ parameter ‘a’
•  Statement 1 is True, Statement 2 is True; Statement 2 is correct explanation for Statement 1
•  Statement 1 is True, Statement 2 is True; Statement 2 is not correct explanation for Statement 1
•  Statement 1 is True, Statement 2 is False
•  Statement 1 is False, Statement 2 is True
Solution:

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