Physics question and answers for February 27, 2024
- Q Q 33 A certain amount of an ideal gas is initially at a pressure p and temperature T First it undergoes a constant pressure process 1 2 such that T...
- Q If Co and C represent the rms speed of monoatomic gas molecules and the speed of sound in that gas then Co C Co C hr Co C
- Q The pressure P versus volume V of an ideal gas varies as shown in the given figure Which of the following graph may represent the variation of pressure P with...
- Q A vessel contains 14 gm 7 moles of hydrogen and 96 gm 9 moles of oxygen at STP Chemical reaction is induced by pasing electric spark in the vessel til...
- Q A balloon of volume V contains a gas of mass m at a pressure P and temperature 15 C Gas is pumped into the balloon so that its volume is...
- Q 29 A tank used for filling helium balloons has a volume of 0 300m and contains 2 mol of helium gas at temperature T Considering helium behaves as an ideal...
- Q The ratio of specific heat capacity at constant pressure to the specific heat capacity at constant volume is 5 3 for a certain ideal gas 8 m of this gas...
- Q Under an adiabatic process the volume of a ideal gas gets doubled Consequently the mea collision time between the gas molecul changes from t to t2 If y for this...
- Q A vessel of volume V 5 0 litre contains m 1 4 g of nitrogen at a temperature T 1800 K Find the gas pressure taking into account that n...
- Q N molecules each of mass m of gas A and 2 N molecules each of m ss 2 m of gas B are contained in the same vessel which maintained...
- Q 5 moles of SO and 5 moles of O react in a closed vessel At equilibrium 60 of the SO is consumed The total number of gaseous moles SO2 O...
- Q ne pv diagram below shows three states 1 2 and 3 of a sample of Helium He gas of mass 2 The atomic mass of helium is 4 0 u...
- Q If pressure of a gas contained in a closed vessel is increased by 0 4 when heated by 1 C the initial temperature must be Option 1 Option 2 Option...
- Q A wire of length L and 3 identical cells of negligible internal resistance are connected in series Due to the current the temperature of the wire is raised by AT...
- Q In two vessels of same volume atomic hydrogen and helium at pressure 1 atm and 2 atm are filled If temperature of both the samples is same then average speed...
- Q In a cubical vessel are enclosed n molecules of a gas each having a mass m and an average speed u If I is the length of each edge of...
- Q If the average mass of a smoke particle in an Indian kitchen is 4 x 10 speed of the smoke particles at 27 C is approximately use k 1 38...
- Q 24 Gaseous helium filled in a horizontal fixed cylindrical separated from its surroundings by a piston of finite mass w move without friction Inner surface of the vessel as well...
- Q The compressibility of a liquid is 4 x 10 8 N m If 2 litre of liquid is subjected to extra pressure of 2 x 106 N m then the...
- Q A cylindrical box is moving with a constant velocity along its axis in a chamber filled with an ideal gas Velocity of the cylinder is so small that it does...
- Q SolveLancer Test A gas follows the below equation U 3PV U Internal energy P Pressure V Volume How many of the below statement is are correct 1 The gas molecule...
- Q 17 Select the incorrect statement about Maxwell s speed distribution 1 The distribution function depends only on the absolute temperature 2 Vrms Vavg Vmp 3 The area under the distribution...
- Q Consider a closed cylinder whose walls are adiabatic The cylinder lies in a horizontal position and is divided into three parts A A2 and A3 by means of partitions S...
- Q When a gas in an open container is heated the mean free path 1 Increases 2 Decreases 3 Remains the same 4 Any of the above depending on the molar...
- Q 9 004 g The ratio of number of collisions per second at the walls of containers by He and O gas molecule kept at same volume and temperature is assume...
- Q The temperature of a gas is held constant while its volume is decreased The pressure exerted by the gas on the walls of the container increases because its molecules a...
- Q 1 Figure shows the variation in temperature AT with the amount of heat supplied Q in an isobaric process corresponding to a monoatomic M diatomic D and a polyatomic P...
- Q According to kinetic theory of gase molecules of a gas behave like inelastic spheres perfectly elastic rigid spheres perfectly elastic non rigid spheres inclastic non rigid spheres 2014
- Q b 2 567 g per litre c 3 752 g per litre d 4 572 g per litre Two thermally insulated vessels 1 and 2 are filled with air at...
- Q 3 2 2 1 4 1 2 2 2 Nitrogen gas N of mass 28 g is kept in a vessel at pressure of 10 atm and temperature 57 C...
- Q 4 1 2 2 3 2 2 1 2 Nitrogen gas N of mass 28 g is kept in a vessel at pressure of 10 atm and temperature 57 C...
- Q 4 None of these N molecules of an ideal gas at temperature T and presseure P are contained in a closed box If the molecules in the box gets doubled...
- Q A given gas is heated from 273 K to 819 K while its volume is tripled If initially the gas pressure is 4 x 105 Pascal the final pressure is...
- Q rise For liquid when temperature viscosity of liquid decrease so speed increase in liquid Next for gas when temperature increases it s viscosity increase but unfortunately it s speed increase...
- Q 2 a depth of h 2 cm The pressure required to blow an air bubble out of the lower end of the tube is N m surface tension T 7...
- Q For one mole of van der Waal s gas when b 0 and T 300 K the PV vs I V plot is shown below The value of the van...
- Q Calculate the lowest energy of an electron confined in a three dimensional cubical box of each side 1 Find the temperature at which the average energy of the molecules of...
- Q Pressure versus temperature graph for a given sample of an ideal gas is as shown Density of gas at A is p then density of gas at B will be...
- Q Questions 1 5 For each question an amount of solute is given and a temperature is stated If all of the solute could be dissolved in 100g of water at...
- Q d PV 5 16 RT where R is the gas constant 9 A vessel containing 1 mole of O gas molar mass 32 at a temperature T The pressure of...
- Q A large number of identical elastic balls are moving randomly inside a fixed vertical cylindrical container under a piston that is at a height h 1 0 m above the...
- Q c Work done on the system is positive d Heat removed from the system is negative thermodynamic process is carried out from an original state D P Nm 200 to...
- Q Two moles of helium gas is mixed with three moles of hydrogen molecules taken to be rigid What is the molar specific heat of mixture at constant volume Take R...
- Q Option C D 1 mol of oxygen 0 at 200 K while the right part contains 1 mol of nitrogen N at 400 K If the stop cork is opened...
- Q Reaching a stall angle that causes a reduction in horizontal travel by reducing upward lift pertains to which concept Archimedes principle Bernoulli s principle
- Q Consider a mixture of oxygen and hydrogen at room temperature As compared to hydrogen molecule an oxygen molecule hits the wall With greater average speed With smaller average speed With...
- Q A quantity of 56g of nitrogen gas is enclosed in a rigid vessel at a temperature 300K The amount of heat in kcal has to be transferred to the gas...
- Q The mass m 15 g enclosed in a vessel at a temperature T 300 K What amount of heat has to of nitrogen is be transferred to the gas to...
- Q Consider a container of nitrogen gas molecules at 900 K Calculate a the most probable speed b the average speed and c the rms speed for the molecules d State...
- Q 13 One mole of an ideal monatomic gas is kept in a rigid vessel The vessel is kept inside a steam chamber whose tempreature is 97 C Initially the temperature...
- Q 4 A balloon is filled at 27 C and 1 atm pressure by 500m He At 3 C and 0 5 atm pressure the volume of He gas contained in...
- Q d 3 4 x 10 J 43 When the container stopped suddenly ordered kineti energy gets converted into disordered kinetic energ which increases the temperature of gas KE per volume...
- Q one mole of an ideal monoatomic gas is taken through process AB given by P a BV where a and B are positive constants on P V diagram Which of...
- Q d 58K ure of n ideal tant pressure d 9 a 4800 K b 3600 K 34 Average velocity of an ideal T a Proportional to b Proportional to T...
- Q 45 A sealed container with negligible coefficient of volumetr expansion contains He gas When it is heated from 300 to 600 K the average KE of He atom will be...
- Q In van der Waals equation of state of the gas law the constant b is a measure of A intermolecular repulsions B intermolecular attraction C volume occupied by the molecules...
- Q One mole of monoatomic gas is involved in the cyclic process as shown in the PV graph Extension of the line segments 1 2 and 3 4 pass through the...
- Q alf that exerted equal to that en is half the that exerted C 11 A gas mixture contains 8 moles of oxygen and 2 moles of argon at room temperature...
- Q At 27 C the speed at which maximum number of molecules belongs is 10 m s then molecular weight of gas is R 25 3 J mol k Question Type...
- Q 0 One mole of a monatomic gas is involved in the cyclic process as shown in the PV graph Extension of the line segments 1 2 and 3 4 pass...
- Q A certain mass of oxygen treated like an ideal gas P in 10 Pa undergoes a cycle shown on P T diagram here The maximum volume of gas during the...
- Q An ideal gas is in a chamber with the volume fixed Initially the root mean square speed of the atoms is 500 m s and the pressure of the chamber...
- Q undergoes the reversible cycle ABCA shown in the p V diagram below where AB is an isotherm The molar heat capacities are Cp at constant pressure and Cv at constant...
- Q As shown schematically in the figure two vessels contain water solutions at temperature T o potassium permanganate KMnO4 of different concentrations n and n n n molecules pe unit volume...
- Q Adiabatic Process Constant Q 12 The initial volume of 0 18 kg of certain gas was 0 15 m at a temperature of 15 C and a pressure of 1...
- Q One mole of ideal gas follows a law according to that its pressure varies with volume as P b where a and b are positive constant The temperature of gas...
- Q At ordinary temperatures the molecules of an ideal gas have only translational and rotational kinetic energies At high temperatures they may also have vibrational energy As a result of this...
- Q 29 The root mean square rms speed of hydrogen molecules at a certain temperature is 300 m s If the temperature is doubled and hydrogen gas dissociates into atomic hydrogen...
- Q Equal moles of two gases A and B are kept in chambers which have same volume and temperature Find the ratio of mean free path of gas B to mean...
- Q ns Two ideal polyatomic gases at temperatures T and T are mixed so that there is no loss of energy If F and F m and m n and n...
- Q At the same temperature pressure and volume of two gases which of the following quantities is constant X C D The number of molecules Average kinetic energy Root mean square...
- Q The absolute temperature of a gas is determined A B C The average momentum of the molecule The velocity of sound in the gas The number of molecules in the...
- Q The velocity of three molecules are 2 km s 4 km s 6 km s Find 1 me velocity ii root mean square velocity Ans i mean square velocity V...
- Q 1 What is the average kinetic energy of molecules of an ideal gas leaking freely through an orifice of a container which has N molecules at pressure P in volume...
- Q The temperature T F of a room at time t minutes is given by the formula below T 65 9 25 t for 0 t 25 a Find the room...
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