NEET States of Matter PYQ practice sheet

7 previous-year NEET Chemistry questions from States of Matter, newest papers first. States of Matter carries 7 of the Chemistry questions in NEET 2020 to 2026, so this is a good place to test yourself after revising the chapter. Marking: +4 correct, −1 wrong.

1. 1.

   NEET 2023

   Which amongst the following options is correct graphical representation of Boyle's Law? Graphs (described from the figure; all axes start at the origin): (1) $P$ (y-axis) vs $T$ (x-axis): three straight lines through the origin labelled $V_1, V_2, V_3$ with $V_1 < V_2 < V_3$ (steepest is $V_1$). (2) $P$ vs $V$: three hyperbola-like curves labelled $T_1, T_2, T_3$ with $T_3 > T_2 > T_1$, but the curve for $T_1$ lies farthest from the origin and $T_3$ nearest. (3) $P$ vs $1/V$: three straight lines through the origin labelled $T_1, T_2, T_3$ with $T_3 > T_2 > T_1$ (steepest is $T_3$). (4) $P$ vs $1/V$: three hyperbola-like curves labelled $T_1, T_2, T_3$ with $T_3 > T_2 > T_1$.

   • (A)
     Graph (1)
   • (B)
     Graph (2)
   • (C)
     Graph (3)
   • (D)
     Graph (4)
2. 2.

   NEET 2023

   Intermolecular forces are forces of attraction and repulsion between interacting particles that will include : A. dipole - dipole forces. B. dipole - induced dipole forces. C. hydrogen bonding. D. covalent bonding. E. dispersion forces. Choose the most appropriate answer from the options given below :

   • (A)
     A, C, D, E are correct.
   • (B)
     B, C, D, E are correct.
   • (C)
     A, B, C, D are correct.
   • (D)
     A, B, C, E are correct.
3. 3.

   NEET 2022

   Which one is not the correct mathematical equation for Dalton's Law of partial pressure? Here $p=$ total pressure of gaseous mixture:

   • (A)
     $p_i=\chi_ip_i^{\circ}$, where $\chi_i=$ mole fraction of $i^{th}$ gas in gaseous mixture, $p_i^{\circ}=$ pressure of $i^{th}$ gas in pure state
   • (B)
     $p=p_1+p_2+p_3$
   • (C)
     $p=n_1\dfrac{RT}{V}+n_2\dfrac{RT}{V}+n_3\dfrac{RT}{V}$
   • (D)
     $p_i=\chi_ip$, where $p_i=$ partial pressure of $i^{th}$ gas, $\chi_i=$ mole fraction of $i^{th}$ gas in gaseous mixture
4. 4.

   NEET 2022

   A 10.0 L flask contains 64 g of oxygen at $27^{\circ}\mathrm{C}$. (Assume $\mathrm{O_2}$ gas is behaving ideally). The pressure inside the flask in bar is: (Given $R=0.0831\ \text{L bar K}^{-1}\text{mol}^{-1}$)

   • (A)
     4.9
   • (B)
     2.5
   • (C)
     498.6
   • (D)
     49.8
5. 5.

   NEET 2021

   Choose the correct option for graphical representation of Boyle's law, which shows a graph of pressure vs. volume of a gas at different temperatures :

   • (A)
     
   • (B)
     
   • (C)
     
   • (D)
     
6. 6.

   NEET 2021

   Choose the correct option for the total pressure (in atm.) in a mixture of $4\ \mathrm{g}\ \mathrm{O_2}$ and $2\ \mathrm{g}\ \mathrm{H_2}$ confined in a total volume of one litre at $0^\circ\mathrm{C}$ is : [Given $R = 0.082\ \mathrm{L\,atm\,mol^{-1}K^{-1}}$, $T = 273\ \mathrm{K}$]

   • (A)
     25.18
   • (B)
     2.602
   • (C)
     26.02
   • (D)
     2.518
7. 7.

   NEET 2020

   A mixture of $\mathrm{N_2}$ and Ar gases in a cylinder contains $7$ g of $\mathrm{N_2}$ and $8$ g of Ar. If the total pressure of the mixture of the gases in the cylinder is $27$ bar, the partial pressure of $\mathrm{N_2}$ is : [Use atomic masses (in g mol$^{-1}$): N = 14, Ar = 40]

   • (A)
     9 bar
   • (B)
     12 bar
   • (C)
     15 bar
   • (D)
     18 bar