Kinetic Theory of Gases and Radiation - Physics - MCQ Test

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Kinetic Theory of Gases and Radiation

Jan 25, 4:15 PM

60 minutes

Jan 25, 5:15 PM

100.0 marks

MCQ

55 questions

Kinetic Theory of Gases and Radiation

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MCQ Test of 12 th Class, Physics & Mathematics & Chemistry & Biology & Marathi & English & Geography Kinetic Theory of Gases and Radiation - Study Material

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Question 1 : If the pressure of a gas remains constant and the temperature is doubled as a result of it the volume of the gas also gets doubled. Identify by which of the following law this can be explained ?

Question 2 : Select the correct formula :(where k=Boltzmann's constant, R= gas constant, n= moles, r = density, M= molecular weight, p= pressure, T= kelvin temperature, V= volume) a) k=RN$_{av}$ b)$r=\dfrac{nM}{V}$c)$\dfrac{p}{r}=\dfrac{RT}{M}$d) R=kN$_{av}$

Question 3 : A ballon filled with air at 47$^{0}$C has volume of 3 litre. If ballon is kept in a room its volume becomes 2.7 litre, the temperature of the room is :

Question 6 : The nature of the graph of pressure 'P' against reciprocal of volume 'V' of an ideal gas at constant temperature is

Question 7 : What happens to the density of the gas if the volume of an ideal gas is reduced to half its original volume:

Question 8 : If the volume of the gas is to be increased by 4 times :

Question 9 : An ideal gas is enclosed in a sealed container. Upon heating, which property of the gas does not change?

Question 10 : Two gases A and B are taken in same volume containers under similar conditions of temperature and pressure. In container A, there are '2N' molecules of gas A. How many number molecules does container B have?

Question 11 : 16 gm of $O_{2}$ gas and x gm of $H_{2}$ gas occupy the same volume at the same temperature and pressure. Then x is :

Question 12 : Which of the following statements is the most accurate with regard to the significance of Avogadro's number, $6.02 \times 10^{23}$ ?

Question 13 : Which of the following property is used to identify whether a substance is a solid, liquid or gas ?

Question 14 : A box has two compartments of equal volume separated by a divider each compartment filled with a random sample of $'n\ '$ moles of a certain gas, but the pressure in compartment $A$ is twice the pressure in compartment $B$. Identify which of the following statements is true?

Question 15 : The parameter that determine the physical state of gas are : a) Pressure b) Volumec) Number of moles d) Temperature

Question 16 : $O_2$ is filled in a cylinder. When pressure is increased $2$ times, temperature becomes four times, then how much times their density will become

Question 17 : If the temperature of a gas is increased by 1 K at constant pressure, its volume increases by 0.0035 of the initial volume. The temperature of the gas is :

Question 18 : The volume of a mole of a perfect gas at NTP is

Question 19 : A vessel has 6g of hydrogen at pressure P and temperature 500K. A small hole is made in it so that hydrogen leaks out. How much hydrogen leaks out if the final pressure is $P/2$ and temperature falls to 300K?

Question 20 : Which of the following statements is correct regarding one mole of helium gas and one mole of neon gas ,both are at STP.

Question 21 : A closed vessel has $6 g$ of hydrogen at pressure P and temperature $500 K$. A small hole is made in it so that hydrogen leaks out. How much hydrogen (in gm) leaks out if the final pressure is $P/2$ and temperature falls to $300 K$.

Question 22 : The relation between volume V, pressure P and absolute temperature T of an ideal gas is PV = xT, where x is a constant. The value of x depend upon

Question 23 : A gas at $27^{o}$C and pressure of 30 atm. is allowed to expand to atmospheric pressure and volume 1.5 times larger. The final temperature of gas is

Question 24 : Assertion: Air pressure in a car tyre increases during driving Reason: Absolute pressure in a car tyre increases during driving

Question 26 : A box contains two compartments of equal volume separated by a divider. The two compartments each contain a random sample of n moles of a certain gas, but the pressure in compartment A is twice the pressure in compartment B . Which of the following statements is true?

Question 27 : The volume of a gas is 5 litres at N.T.P. what will be its volume at 273$^{0}$ C and at a pressure of four atmospheres

Question 28 : One gram molecule of any gas at $NTP$ occupies $22.4\ L$. This fact was derived from:

Question 29 : A vessel containing 1 g of oxygen at a pressure of 10 atm and a temperature of 47$^o$C. If is found that because of a leak, the pressure drops to 5/8th of its original value and the temperature galls to 27$^o$C. Find the volume of the vessel and the mass of oxygen that is leaked out.

Question 30 : Equation of gas in terms of pressure $p$ absolute temperature $T$ and density $d$ is :

Question 31 : By what percentage should the pressure of a given mass of a gas be increased so as to decrease its volume by 10% at a constant temperature?

Question 32 : The absolute temperature T of a gas is plotted against its pressure P for two different constant volumes V$_{1}$ and V$_{2}$ where V$_{1}$ > V$_{2}$. T is plotted along x-axis and P along y-axis.

Question 33 : Two identical glass spheres filled with air are connected by a horizontal glass tube. The glass tube contains a pellet of mercury at its mid-point. Air in one sphere is at $0^o$C and the other is at $20^o$C. If both the vessels are heated through $10^o$C, then neglecting the expansions of the bulbs and the tube.

Question 34 : Three perfect gases at absolute temperatures $\mathrm{T}_{1},\ \mathrm{T}_{2}$ and $\mathrm{T}_{3}$ are mixed. The masses of molecules are $\mathrm{m}_{1},\ \mathrm{m}_{2}$ and $\mathrm{m}_{3}$ and the number of molecules are $\mathrm{n}_{1},\ \mathrm{n}_{2}$ and $\mathrm{n}_{3}$ respectively. Assuming no loss of energy, the final temperature of the mixture is:

Question 35 : A gas is heated through $1^{o}\ C$ in a closed vessel. Its pressure is increased by $0.4$%. The initial emperature of the gas is

Question 36 : If $\rho $ is the density, m is the mass of 1 molecule and K is the Boltzman constant for a gas then the pressure of the gas is:

Question 37 : A quantity of air $(\gamma = 1.4)$ at 27$^o$C is compressed suddenly, the temperature of the air system will

Question 38 : A one litre sphere and a two litre sphere are connected with a capillary tube of negligible volume. They contain an ideal gas at 27$^{0}$C at a pressure of 100cm of Hg. Keeping the temperature of one litre sphere constant at 27$^{0}$C, if temperature of two litre sphere is increased to 127$^{0}$C, then the final pressure is

Question 39 : According to Avogadro's hypothesis, equal volumes of gases under the same conditions of temperature and pressure will contain:

Question 40 : At. N.T.P. 28 gm of Nitrogen occupies 22.4 liters. What is the mass of 5.6 liters of nitrogen at 38cm of Hg pressure and 273$^{0}$ C temperature?

Question 41 : At the top of a mountain a thermo meter read 7$^{0}$ C and barometer reads 70 cm of Hg. At the bottom of the mountain the barometer reads 76cm of Hg and thermometer reads 27$^{0}$ C. The density of air at the top of mountains is ______ times the density at the bottom.

Question 42 : If the volume of an ideal gas is doubled while its temperature is quadrupled, does the pressure

Question 43 : The African bombardier beetle stenaptinus insignis can emit a jet of defensive spray from the movable tip of its abdomen. The beetle's body has reservoirs of two different chemicals. When the beetle is disturbed, these chemicals are combined in a reaction chamber producing a compounds that is warmed from $20^o$C to $100^o$C by the heat of reaction. The high pressure produced allows the compound to the sprayed out at speeds 19 ms$^{-1}$ scaring away predators of all kinds. Assume specific heat of two chemicals and the spray to be same as that of water $[4.19 \times 10^3 J (kgK)^{-1}]$ and initial temperature of chemicals to be $20^o$C. How many times does the pressure increase?

Question 44 : 1000c.c of a permanent gas at constant pressure is heated from 27$^{0}$ C to 327$^{0}$ C. The new volume will be

Question 45 : An ideal gas is enclosed in a perfectly closed box.On increasing the temperature of the gas, which property of the gas does not change?

Question 46 : A given amount of gas is heated until both its pressure and volume are doubled. If initial temperature is 27$^{0}$ C, its final temperature is

Question 47 : For an isochoric process the temperature at which the pressure of a gas will be double that of its pressure at 270$^{0}$ C is

Question 49 : A reciever has a pressure of 144cm of Hg. After two strokes with an exhaust pump, the pressure is 36cm of Hg. After another two strokes the pressure will be.

Question 50 : One gram mol of helium at 27$^{0}$ C is mixed with three gram mols of oxygen at 127$^{0}$ C at constant pressure. If there is no exchange of heat with the atmosphere then the final temperature will be

Question 51 : During an experiment, an ideal gas is found to obey a condition $\displaystyle \frac{P^{2}}{\rho}\, =\, constant\, (\rho\, =\, density\, of\, the\, gas)$ The gas is initially at temperature T, pressurre P and density $\rho$. The gas expands such that density changes to $\rho/2$

Question 52 : Two identical containers each of volume V$_{0}$ are joined by a small pipe. The containers contain identical gases at temperature T$_{0}$ and pressure P$_{0}$. One container is heated to temperature 2T$_{0}$ while maintaining the other at the same temperature. The common pressure of the gas is P and n is the number of moles of gas in container at temperature 2T$_{0}$.

Question 53 : Keeping the number of moles, volume and pressure the same, which of the following are the same for all ideal gas?

Question 54 : A glass tube sealed at both ends is 1m long. It lies horizontally with the middle 10 cm containing Hg. The two ends of the tube equal in length contain air at 27$^{0}$C and pressure 76 cm of Hg. The temperature at one end is kept 0$^{0}$C and at the other end it is 127$^{0}$C Neglect the change in length of Hg column. Then the change in length on two sides is

Question 55 : Two gases occupy two containers A and B. The gas in A of volume $0.11\, m^3$ exerts a pressure of 1.38 MPa. The gas in B of volume $0.16\, m^3$ exerts a pressure of 0.69 MPa. Two containers are united by a tube of negligible volume and the gases are allowed to intermingle. What is the final pressure in the container if the temperature remains constant ?

SUHAS BIDGAR SIR

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Class Details:- 12 th Class | Physics Mathematics Chemistry Biology Marathi English Geography

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