The value of root mean square velocity at normal temperature and pressure will be maximum for which of following gases?
- AOxygen
- BAir
- ✓Hydrogen
- DHelium
Answer: C.
View full solution →Question types
PART - 2 CH - 12 Kinetic Theory question types
134 questions across 8 question groups — pick any mix to generate a Physics paper with step-by-step answer keys.
134
Questions
8
Question groups
5
Question types
01
M.C.Q (1 Marks)
23 Q→02Fill In The Blanks[1 Marks ]
9 Q→031 Marks Question
44 Q→042 Marks Questions
29 Q→053 Marks Question
3 Q→065 Marks Questions
14 Q→07True False[1 Marks ]
10 Q→08Match the following.
2 Q→Sample Questions
PART - 2 CH - 12 Kinetic Theory questions
One sample from each question group in this chapter. Select any group above to see the full set with answer keys.
If a gas follows Boyle's law then what will be the form of the graph between PV and V?
- A
- B
- C
- ✓
Answer: D.
View full solution →According to molecular kinetic theory, the velocity of molecules at absolute zero temperature
- APositive but negligible
- ✓is zero
- Cis infinite
- Dnone of the above
Answer: B.
View full solution →The value of R in SI unit will be:
- A2 calories/mol-K
- B8.3 joule/mole-K
- C2 Kcal/kg mol-K
- ✓$8.3 \times 10^3$ joule $/ \text {kg mol} - K$
Answer: D.
View full solution →Molar specific heats for oxygen gas will be as per:
- A$\frac{5}{3}$
- B$\frac{7}{4}$
- C$\frac{4}{3}$
- ✓$\frac{7}{5}$
Answer: D.
View full solution →If the number of gas molecules is doubled then the values of pressure and kinetic energy_________will change.
The highest capacity for_________ found in diffusion.
For a triatomic gas with linear molecules f =_________.
The ratio (r) of the specific heats $C _\text { P }$ and $C _\text{ V }$ of the gas, which is also called adiabatic yield $\text r =$ $1+2$
View full solution →The volume of 1 mole of any gas at normal temperature and_________pressure is liter.
Write the values of $C_P$ and $C_V$ for monatomic and diatomic gases.
View full solution →If the density of a gas is kept constant but the root mean square velocity of the gas molecules is doubled, then how much will the pressure of the gas increase?
There are equal number of molecules of hydrogen and oxygen in a box. If a tiny hole is made in the box, which gas will leak out rapidly and why?
Why cannot an ideal gas be converted or liquid state?
If the number of molecules in a vessel is halved. What will be the change in pressure?
In a vessel 80 cm . A gas is filled at the pressure of mercury and at a certain temperature. At the same temperature the mass of the vessel is increased by $60 \%$ by filling more gas in it. Calculate the resultant pressure in the vessel.
View full solution →An open mouthed vessel is filled with air at $60^{\circ} C$. To what temperature should the vessel be heated so that $\frac{1}{4}$ part of air comes out?
View full solution →The diameter of an oxygen molecule is approximately $3 \text Å $. Calculate the mean free path of oxygen molecules and the mean time taken between collisions at normal temperature and pressure. At normal temperature and pressure the number of molecules per cubic is $3 \times 10^{19}$.
View full solution →The free path of molecules of a gas at $27^{\circ} C$ temperature is $2.76 \times 10^{-5}$ meter. If the diameter of the molcule is $3.0 \text Å $, then find the pressure of the gas.
View full solution →If $n _0=2.79 \times 10^{25}$ molecules $m ^{-3}$ and mean free path $=2.2 \times 10^{-8} m$ then estimate the diameter of the molecules.
View full solution →Prove that the average kientic energy of molecule is equal to $\frac{3}{2} kT$
View full solution →What is Graham's law of gas diffusion ? Propound this law on the basis of molecular motion theory.
According to the molecular kinetic theory of gases, what is the mean free path?
What is mean free path? Explain and obtain its expression and prove that $\lambda \propto T$ and $\lambda \propto \lambda_{ P }.$
View full solution →What is the law of equal division of energy, prove it the tatal energy of $\text n$ moles of gas molecules is $\text E =\frac{ 1 }{ 2 } \text {fnRT}$ energy. Explain the specific heats of monatomic, diatomic and triatomic gases from uniform distribution.
View full solution →What is called degree of freedom? How many types are there? Explain to them.
Write which two modifications van der Walls made in the equation of state, explain these by defining critical temperature critical pressure and critical volume and obtain their values.
How does the behaviour of a real gas differ from the behaviour of an ideal gas? Under what conditions does a real gas behave like an ideal gas?
If the number of molecules in a container is doubled, the rms speed of the molecules is affected.
According to the law of energy equilization, the average energy of a molecule of a diatomic gas is 5/2 KT.
The correct value of the constant R in the ideal gas equation in SI units is Newton meter per Kelvin per mole.
According to molecular kinetic theory, the velocity of molecules is zero at absolute zero temperature.
It is the ratio of molar specific heats for oxygen.
| A | B |
| 1. Any gas behave at high temperature and low pressure | (A) $\frac{89}{27 b^2}$ |
| 2. The value of $N_A$ will be | (B) $6.023 \times 10^{26}$ per kg mol. |
| 3. $P _{ C }=$ | (C) Like ideal gas |
| 4. $T _{ C }=$ | (D)$\frac{a}{27 b^2}$ |
| 5. In a container the mean free path of molecule is inversely proportional to | (E) Density |
| A | B |
| 1. Dalton's Partial Pressure law | (A) $\frac{2}{3}$ |
| 2. PV = | (B) Excessive |
| 3. The part of mean K.E of unit volume gas isequal to | (C) $\begin{array}{l} P = P _1+ P _2+ P _3+\ldots\end{array}$ |
| 4. The value of KE. due to r.m.s. velocity is zero | (D) $\frac{1}{3} MC _{r m s}^2$ |
| 5. The gas that's density ( $\rho$ ) become less than value of $C _{ rms }$ | (E) zero |
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