States of Matter PYQs - Last 5 Years

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Practice 50 AP EAPCET Chemistry questions from States of Matter. Use the year-wise and type-wise breakdown to prioritize recent PYQs, then continue into the question list below.

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Last 5 Years States of Matter Questions

Showing 50 of 50 filtered questions.

1States Of Matter

Identify the correct graph for an ideal gas $(y$-axis $=$ compressibility factor, $Z: x$-axis $=$ pressure, $p)$

2States Of Matter

Identify the correct statements from the following:
I. Glass is an extremely viscous liquid.
II. Increase in temperature decreases the surface tension of liquids.
III. Compressibility factor for an ideal gas is zero.

3States Of Matter

At $T(\mathrm{~K})$, the $u_{\mathrm{rms}}$ of $\mathrm{CO}_2$ is $412 \mathrm{~ms}^{-1}$. What is its kinetic energy (in $\mathrm{kJ} \mathrm{mol}^{-1}$ ) at the same temperature ?
\(\left(\mathrm{CO}_2=44 \mathrm{u}\right)\)

4States Of Matter

2.0 g of $\mathrm{H}_2$ diffuses through a porous container in 10 minutes. How many grams of $\mathrm{O}_2$ would diffuse from the same container in the same time under similar conditions?

5States Of Matter

$A$ and $B$ are ideal gases. At $T(\mathrm{~K}), 2 \mathrm{~L}$ of ' $A^{\prime}$ 'with a pressure of 1 bar is mixed with 4 L of ' $B$ ' with a pressure $p_B$ bar in a 100 L flash. The pressure exerted by gaseous mixture is 0.1 bar. What is...

6States Of Matter

The correct equation for one mole of a real gas is $a, b$ are constants)

7States Of Matter

Consider the following

Statement I If thermal energy is stronger than intermolecular forces, the substance prefers to be in gaseous state.
Statement II At constant temperature, the density of an ideal gas is proportional to its pressure.
...

8States Of Matter

At $27^{\circ} \mathrm{C}, 1 \mathrm{~L}$ of $\mathrm{H}_2$ with a pressure of 1 bar is mixed with 2 L of $\mathrm{O}_2$ with a pressure of 2 bar in a 10 L flask. What is the pressure exerted by gaseous mixture in bar? (Assume $\mathrm{H}_2...

9States Of Matter

At $27^{\circ} \mathrm{C}$ kinetic energy of 4 g of $\mathrm{H}_2$ is $x \mathrm{~J}$. What is the kinetic energy (in J ) of 6.4 g of oxygen at $127^{\circ} \mathrm{C}$ ?

10States Of Matter

At $T(\mathrm{~K})$, hydrogen and oxygen gases are mixed in the ratio of $1: 2$ by mass in a closed vessel of volume ' $V$ ' litres. If the total pressure of gaseous mixture is ' $p$ ' atm, the partial pressure of oxygen (in atm) is

11States Of Matter

Choose the incorrect statement from the following.

12States Of Matter

At $\mathrm{T}(\mathrm{K})$, a gaseous mixture contains $\mathrm{H}_2$ and $\mathrm{O}_2$. The total pressure of the mixture is 2 bar. The partial pressure of $\mathrm{H}_2$ is 1.778 bar. What is the weight $(w / w)$ percentage of $\mathrm{...

13States Of Matter

The most probable speed $\left(U_{\text {mp }}\right)$ of 8 g of $\mathrm{H}_2$ is $2 \times 10^2 \mathrm{~ms}^{-1}$. The kinetic energy (in J ) of same amount of $\mathrm{H}_2$ gas is

14States Of Matter

For one mole of an ideal gas an isochore is obtained. The slope of the isochore is $0.082 \mathrm{~atm} \mathrm{~K}^{-1}$. What will be its pressure (in atm) when the temperature is $12.2 \mathrm{~K} ?\left(R=0.082 \mathrm{~L} \mathrm{~atm}...

15States Of Matter

At what temperature (in K ) the rms velocity of $\mathrm{SO}_2$ molecules is equal to rms velocity of $\mathrm{O}_2$ molecules at $27^{\circ} \mathrm{C}$ ?

16States Of Matter

\(\text { Which of the following is correct for an ideal gas? }\)

17States Of Matter

At 256 K , rms speed of $\mathrm{SO}_2$ gas molecules is $3.16 \times 10^2 \mathrm{~ms}^{-1}$. What is the most probable velocity (in $\mathrm{ms}^{-1}$ ) of same gas at same temperature?

18States Of Matter

Identify the conditions at which van der Waals' equation of state changes to ideal gas equation.

19States Of Matter

Consider the following
Statement-I : If the intermolecular forces are stronger than thermal energy, the substance prefers to be in gaseous state.
Statement-II : Among all elements, the total number of elements available as gases at room tem...

20States Of Matter

The rms velocity $\left(u_{\mathrm{rms}}\right)$, mean velocity $\left(u_{\mathrm{av}}\right)$ and most probability ( $u_{\mathrm{mp}}$ ) of a gas differ from each other at a given temperature. Which of the following ratios regarding them i...

21States Of Matter

$60 \mathrm{~cm}^3$ of $\mathrm{SO}_2$ gas diffused through a porous membrane in ' $x$ ' min. Under similar conditions $360 \mathrm{~cm}^3$ of another gas (molar mass $4 \mathrm{~g} \mathrm{~mol}^{-1}$ ) diffused in ' $y$ ' $\min$. The rati...

22States Of Matter

A 10 L vessel contains 1 mole of an ideal gas with pressure of $p(\mathrm{~atm})$ and temperature of $T(\mathrm{~K})$. The vessel is divided into two equal parts. The pressure (in atm) and temperature in (K) in each part is respectively.

23States Of Matter

At 240.55 K , for one mole of an ideal gas, a graph of $p$ (on $Y$-axis) and $V^{-1}$ (on $X$-axis) gave a straight line passing through origin. Its slope $(m)$ is $2000 \mathrm{~J} \mathrm{~mol}^{-1}$. What is the kinetic energy ( in $\mat...

24States Of Matter

At STP, a closed vessel contains I mole each of He and $\mathrm{CH}_4$. Through a small hole, 2 L of He and LL of $\mathrm{CH}_4 \mathrm{WHS}$ escaped from vessel in ' $t$ ' minutes. What are the mole fractions of He and $\mathrm{CH}_4$ res...

25States Of Matter

At $T(\mathrm{~K})$ for one mole of an ideal gas, the graph of $p$ (on $Y$-axis) and $V^{-1}$ (on $X$-axis) gave a straight line with slope of $32.8 \mathrm{~L} \mathrm{~atm} \mathrm{~mol}^{-1}$. What is the temperature (in K$) ?\left(R=0.0...

26States Of Matter

A vessel of volume $V \mathrm{~L}$ contains an ideal gas are $T(\mathrm{~K})$. The vessel is partitioned into two equal parts. The volume (in L ) and temperature (in K ) in each part is respectively.

27States Of Matter

The RMS velocity ( $u_{\mathrm{rms}}$ ) of one mole of an ideal gas was measured at different temperatures and the following graph is obtained. What is the slope $(m)$ of straight line ?
$$ \begin{aligned} & \left(X \text {-axis }=T(\mathrm...

28States Of Matter

Two statements are given below.
Statement I : Viscosity of liquid decreases with increase in temperature.
Statement II : The units of viscosity coefficient are pascal.
The correct answer is

29States Of Matter

At $T(\mathrm{~K})$, the $p, V$ and $u_{\mathrm{rms}}$ of 1 mole of an ideal gas were measured. The following graph is obtained. What is it slope ( $m$ )?
( $x$-axis $=p V: y$-axis $u_{\mathrm{rms}}^2, M=$ Molar mass $)$

30States Of Matter

Three layers of liquid are flowing over fixed solid surface as shown below. The correct order of velocity of liquid in these layers is

31States Of Matter

Two statement are given below.
Statement I : The ratio of the molar volume of a gas to that of an ideal gas at constant temperature and pressure is called the compressibility factor.
Statement II : The rms velocity of a gas is directly prop...

32States Of Matter

At 133.33 K . the rms velocity of an ideal gas is

\(\left(M=0.083 \mathrm{~kg} \mathrm{~mol}^{-1} ; R=8.3 \mathrm{~J} \mathrm{~mol}^{-1} \mathrm{~K}^{-1}\right)\)

33States Of Matter

What is the kinetic energy (in $\mathrm{J} \mathrm{mol}^{-1}$ ) of one mole of an ideal gas (molar mass $=0.1 \mathrm{~kg} \mathrm{~mol}^{-1}$ ) if its rms velocity is $4 \times 10^2 \mathrm{~ms}^{-1}$ at $T(\mathrm{~K})$ ?

34States Of Matter

The following graph is obtained for a gas at different temperatures $\left(T_1, T_2, T_3\right)$. What is the correct order of temperature? $(x$-axis $=$ velocity, $y$-axis $=$ number of molecules)

35States Of Matter

Identify the correct statements from the following
I. For an ideal gas, the compressibility factor is 1.0
II. The kinetic energy of $\mathrm{NO}(g)$ (molar mass $=30 \mathrm{~g} \mathrm{~mol}^{-1}$ ) at $T(\mathrm{~K})$ is $x \mathrm{~J} \m...

36States Of Matter

RMS velocity of one mole of an ideal gas was measen at different temperatures. A graph of $\left(\mu_{\mathrm{ma}}\right)^{-2}$ (on $Y$-sdi) and $T(\mathrm{~K})$ ( on $X$-axis) gave straight line passing through the origin and its slope is ...

37States Of Matter

Given below are two statements.Statement I : Viscosity of liquid decreases with increase in temperature.Statement II : The units of viscosity are $\mathrm{kg} \mathrm{m}^{-1} \mathrm{~s}^{-1}$.The correct answer is

38States Of Matter

A 100 L cylinder containing $\mathrm{H}_2$ exerted a pressure of 4 atm at 300 K . It was accidentally opened and some $\mathrm{H}_2$ was escaped. When it was closed, it exerted a pressure of 3 atm at 300 K . The number of moles of $\mathrm{...

39States Of Matter

An ideal gas $(X)$ present in a vessel of volume $V \mathrm{~L}$ exerted a pressure of 16.4 atm at 200 K . What is its concentration in $\mathrm{mol} \mathrm{L}^{-1}$ ?
(Given, $R=0.082 \mathrm{~L} \mathrm{~atm} \mathrm{~mol}^{-1} \mathrm{~...

40States Of Matter

At. $T(\mathrm{~K})$, equal weights of $\mathrm{H}_2, \mathrm{D}_2$ and $\mathrm{T}_2$ are present in closed vessel. The pressure exerted by this gaseous mixture is $p \mathrm{~atm}$. The ratio of partial pressure of $\mathrm{T}_2, \mathrm{...

41States Of Matter

At 300 K , one mole of a gas present in a 10 L flask exerted a pressure of 2.706 atm. What is its compressibility factor $(Z)$ ?
(Given $R=0.082 \mathrm{~L} \mathrm{~atm} \mathrm{~mol}^{-1} \mathrm{~K}^{-1}$ )

42States Of Matter

Identify the correct variation of pressure and volume of a real gas \((A)\) and an ideal gas (\(B\)) at constant temperature. \((y=p ; x=V)\)

43States Of Matter

The gaseous mixture used for welding of metals is

44States Of Matter

Among the gases a, b, c , d, e and f, the gases that show only positive deviation from ideal behaviour at all pressures in the graph are

45States Of Matter

Which among the following statements is/are
incorrect regarding real gases?
(i) Their compressibility factor is never equal
to unity (Z \(\ne\) 1).
(ii) The deviations from ideal behaviour are
less at low pressures and high temperatures.
(i...

46States Of Matter

Three flasks of equal volume contain \(\mathrm{CH}_4, \mathrm{CO}_2\) and \(\mathrm{Cl}_2\) gases respectively. They will contain equal number of molecules, if

47States Of Matter

When the temperature of a gas is increased from \(30^{\circ} \mathrm{C}\) to \(930^{\circ} \mathrm{C}\), the root mean square speed of the gas would

48States Of Matter

The density of an ideal gas can be given by
........, where p, V, M, T and R respectively
denote pressure, volume, molar-mass,
temperature and universal gas constant.

49States Of Matter

Which of the following graphs correctly
represents Boyle’s Law?

50States Of Matter

Among the following the maximum deviation from ideal gas behaviour is expected from