The compressibility factor for an ideal gas is ______________.

(a)

1.5

(b)

2

(c)

1

(d)

\(\propto \)

Which of the following pair will diffuse at the same rate?

(a)

CO₂ and N₂O

(b)

CO₂ and NO

(c)

CO₂ and CO

(d)

N₂O and NO

The value of Vander Waals constant "a" is maximum for __________.

(a)

helium

(b)

nitrogen

(c)

methane

(d)

ammonia

A person living in Shimla observed that cooking food with using pressure cooker takes more time. The reason for this observation is that at high altitude _____________.

(a)

pressure increases

(b)

temperature decreases

(c)

pressure decreases

(d)

temperature decreases

Statement-I: At constant temperature, PV vs V plot for real gases is not a straight line.
Statement-II: At high pressure, all gases have Z >1, but at intermediate pressure, most gases have Z < 1.

(a)

Statement-I and II are correct and Statement-II is the correct explanation of Statement-I

(b)

Statement-l and II are correct but Statement-II is not the correct explanation of Statement-I

(c)

Statement-I is correct but Statement-II is wrong

(d)

Statement-I is wrong but Statement-II is correct