IAT (IISER) 2025 | States of Matter Question 1 | Chemistry

The work done when one mole of an ideal gas expands at constant temperature $T$ from volume $V$ to $2 V$ (in two equal steps of volume in a linear fashion) is $\frac{7}{12} R T$. How much more work would be done by the gas if it expands in three equal steps?

[ $R$ is the universal gas constant]

$\frac{1}{30} \mathrm{R} T$

$\frac{3}{8} \mathrm{R} T$

$\frac{3}{4} \mathrm{R} T$

$-\mathrm{R} T \ln \left(\frac{1}{15}\right)$

IAT (IISER) 2023

MCQ (Single Correct Answer)

-1

Why is it harder to compress liquids and solids relative to gases?

Solids and liquids have definite volume.

Due to the presence of electron-nuclear attraction in solids and liquids.

Due to the absence of electron-nuclear attraction in solids and liquids

Molecules are closer to each other in solids and liquids.

IAT (IISER) 2022

MCQ (Single Correct Answer)

-1

The van der Waals equation for a real gas is given by $\left(P+\frac{a}{V^2}\right)(V-b)=R T$. What is the dimension of $\left(\frac{a}{b}\right)$ ?

$M L^2 T^{-1}$

$M L^{-1} T^{-2}$

$M L T^{-2}$

$M L^2 T^{-2}$

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