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NEET - Grade 12 - Chemistry - Chemical Kinetics - Introduction and Snapshot of Chemical Kinetics - Study ref# 860

Introduction: Chemistry, by its very nature, is concerned with change. Substances with well-defined properties are converted by chemical reactions into other substances with different properties. For any chemical reaction, chemists try... read more

NEET - Grade 12 - Chemistry - Chemical Kinetics - Introduction and Snapshot of Chemical Kinetics - Study ref# 861

Following sections must be covered to understand the Chemical Kinetics: 1. Rate of a Chemical Reaction 2. Factors Influencing Rate of a Reaction 3. Integrated Rate Equations 4. Pseudo First Order Reaction 5. Temperature Dependenc... read more

NEET - Grade 11 - Chemistry - States of Matter - Importance and Snapshot of States Of Matter - Study ref# 663

Following sections must be covered to understand the States Of Matter: 1. Intermolecular Forces 2. Thermal Energy 3. Intermolecular Forces vs Thermal Interactions 4. The Gaseous State 5. The Gas Laws 6. Ideal Gas Equation 7... read more

NEET - Grade 11 - Physics - Kinetic Theory - Importance and Snapshot of Kinetic Theory - Study ref# 727

Introduction: Boyle discovered the law named after him in 1661. Boyle, Newton and several others tried to explain the behavior of gases by considering that gases are made up of tiny atomic particles. The actual atomic theory got establ... read more

NEET - Grade 11 - Physics - Kinetic Theory - Importance and Snapshot of Kinetic Theory - Study ref# 728

Following sections must be covered to understand Kinetic Theory: 1. Introduction 2. Molecular nature of matter 3. Behaviour of gases 4. Kinetic theory of an ideal gas 5. Law of equipartition of energy 6. Specific heat capacity... read more

NEET - Grade 11 - Physics - Kinetic Theory - Target Setup for Kinetic Theory - Study ref# 729

Student requires to achieve the following milestones to get better grip over Kinetic Theory. The milestones / targets are as follows:- Starting Point: Days 0Test TypeAppear on TestTarget TestsScorePractice Test000%Chapter Test000... read more

NEET - Grade 11 - Physics - Kinetic Theory - Study ref# 878

What happens when a compressed gas pushes a piston out and expands? Answer: When a compressed gas pushes a piston out, the speed of the molecules decreases. Their kinetic energy decreases. Hence temperature of the gas decreases.... read more

NEET - Grade 11 - Physics - Kinetic Theory - Study ref# 879

Two different gases have exactly the same temperature. Does this mean that their molecules have the same rms speed? Answer: No, when the two gases have exactly the same temperature, the average kinetic energy per molecule read more

NEET - Grade 11 - Physics - Kinetic Theory - Study ref# 880

A gas enclosed in a vessel has pressure P, volume V and absolute temperature T. write the formula for number of molecules N of the gas. Answer: From read more

NEET - Grade 11 - Physics - Kinetic Theory - Study ref# 881

Distinguish between average speed and rms speed. If three molecules have speeds , what will be their average speed and rms speed? Answer: Average speed is the arithmetic mean of the speeds of ... read more

NEET - Grade 11 - Physics - Kinetic Theory - Study ref# 882

The rms speed of oxygen molecule  at a certain temperature T is v. if temperature is doubled and oxygen gas dissociates into atomic oxygen, what is the speed of atomic oxygen? Answer: If mass ... read more

NEET - Grade 11 - Physics - Kinetic Theory - Study ref# 883

A gas is filled in a cylinder fitted with a piston at a definite temperature and pressure. Explain on the basis of kinetic theory, the pressure of the gas increases by rising its temperature. Answer: On rising the temperature, the rms velocity ... read more

NEET - Grade 11 - Physics - Kinetic Theory - Study ref# 884

There are N molecules of a gas in a container. If this number is increased to 2N, what will be (i) pressure (ii) total energy (iii) rms speed of the gas? Answer: (i)     As, read more

NEET - Grade 11 - Physics - Kinetic Theory - Study ref# 885

On which of the following factors does the average kinetic energy of gas molecules depend? (i) Nature of the gas, (ii) absolute temperature, (iii) volume. What will be its value at the absolute zero? Answer: The average kinetic energy of gas mo... read more

NEET - Grade 11 - Physics - Kinetic Theory - Study ref# 886

What do you mean by degrees of freedom? State the law of equipartition of energy. Answer: Degrees of freedom: For a dynamical system, degrees of freedom is the total number of independent co-ordinates required to describe completely the p... read more

NEET - Grade 11 - Physics - Kinetic Theory - Study ref# 887

Calculate the molar specific heats of monoatomic gases. And hence find the value of . Answer: A molecule of monoatomic gas has three degrees of freedom.  Average energy per molecule = <... read more

NEET - Grade 11 - Physics - Kinetic Theory - Study ref# 888

Calculate the molar specific heats of diatomic gases. And hence find the value of . Answer: A diatomic molecule has 5 degrees of freedom, 3 translational and 2 rotational.  Average e... read more

NEET - Grade 11 - Physics - Kinetic Theory - Study ref# 889

Calculate the specific heats of triatomic gases. And hence find the value of . Answer:

read more

NEET - Grade 11 - Physics - Kinetic Theory - Study ref# 890

A gas in a vessel is at the pressure . If the masses of all the molecules be made half and their speeds be made double, then find the resultant pressure. Answer: We know, read more

NEET - Grade 11 - Physics - Kinetic Theory - Study ref# 891

Explain the meaning of mean speed, root mean square speed and most probable speed. Answer: Mean Speed: It is the average speed with which a molecule of the gas moves. From Maxwellian speed distribution law,    read more

NEET - Grade 11 - Physics - Kinetic Theory - Study ref# 892

Show that rms velocity of O­2 molecules is  times that of SO2. Atomic weight of sulphur is 32 gm and atomic weight of oxygen is 16. Answer: As rms velocity at a given temperature read more

NEET - Grade 11 - Physics - Kinetic Theory - Study ref# 893

Show that specific heat od a solid is equal to 3R, where R is the universal gas constant. Answer: Let us consider 1 gram mole of the solid containing atoms. Each atom vibrates about its mean p... read more

NEET - Grade 11 - Physics - Kinetic Theory - Study ref# 894

The velocities of three molecules are 3v, 4v and 5v. Calculate their root mean square velocity. Answer:                                       read more

NEET - Grade 11 - Physics - Kinetic Theory - Study ref# 895

Explain the phenomenon of evaporation on the basis of kinetic theory. Answer: According to kinetic theory, molecules of a liquid are in a state of continuous random motion. The molecules near the surface of liquid may have enough kinetic ene... read more

NEET - Grade 11 - Physics - Kinetic Theory - Study ref# 896

For an ideal gas, internal energy can only be translational K.E. Why? Answer: In an ideal gas, there is no force of attraction / repulsion among the molecules. Therefore, the molecules do not have any internal potential energy. We know, ... read more

NEET - Grade 11 - Physics - Kinetic Theory - Study ref# 897

Two perfect gases at temperatures  and  are mixed. There is no loss of energy. Find the temperature of mixture if masses of molecules are read more

NEET - Grade 11 - Physics - Kinetic Theory - Study ref# 898

Two vessels of same volume are filled with the same gas at the same temperature. If the pressure of the gas in these vessel be in the ratio 1:2, then state : (i) the ratio of the rms speeds of the molecules, (ii) the ratio of the numbe... read more

NEET - Grade 11 - Physics - Kinetic Theory - Study ref# 899

What do you mean by Boltzmann constant? Calculate its value in SI units. Answer: Boltzmann constant Where R is universal gas constant and  ... read more

NEET - Grade 11 - Physics - Kinetic Theory - Study ref# 900

Write the dimensional formula for R used in the ideal gas equation PV = RT. Answer: We get  So, ... read more

NEET - Grade 11 - Physics - Kinetic Theory - Study ref# 901

One mole of a monoatomic gas is mixed with three moles of a diatomic gas. What is the molecular specific heat of mixture at constant volume? R = Answer: Here n = 1 mole,   read more

NEET - Grade 11 - Physics - Kinetic Theory - Study ref# 902

A vessel of volume 5 litre contains 1.4 gm of nitrogen at 1800 K. if 30% of its molecules are dissociated into atoms at this temperature, what would be the pressure of the gas? Answer: Here,  ... read more

NEET - Grade 11 - Physics - Kinetic Theory - Study ref# 903

Calculate kinetic energy per molecule and also rms velocity of a gas at  Given  and mass of each molecule read more

NEET - Grade 11 - Physics - Kinetic Theory - Study ref# 904

Calculate (i) rms speed and (ii) mean kinetic energy of one gram molecule of hydrogen at STP. Given density of hydrogen at STP is Answer: Here, read more

NEET - Grade 11 - Physics - Kinetic Theory - Study ref# 905

Estimate the average thermal energy of a helium atom at (i) room temperature  (ii) the temperature on the surface of the sun  (iii... read more

NEET - Grade 11 - Physics - Kinetic Theory - Study ref# 906

The density of carbon dioxide gas at  and at pressure  is 1.98 kg m-3, find the rms velocity of its molecules at read more

NEET - Grade 11 - Physics - Kinetic Theory - Study ref# 907

How many degrees of freedom are associated with 2 gm of He at NTP? Calculate the amount of heat energy required to raise the temperature of this gas from  to . Answer: Number of molecule sin 2... read more

NEET - Grade 11 - Physics - Waves - Study ref# 1061

Set up a relation between speed of sound in a gas and root mean square velocity of the molecules of that gas. Answer: Speed of sound in a gas                   ----------- (i) According to... read more

NEET - Grade 11 - Chemistry - States of Matter - Study ref# 1413

One of the assumptions of kinetic theory of gases states that “there is no force of attraction between the molecules of a gas.” How far is this statement correct? Is it possible to liquefy an ideal gas? Explain. Answer: This statement is cor... read more

NEET - Grade 12 - Physics - Dual Nature of Radiation and Matter - Study ref# 10691

Two monochromatic radiations of frequencies  and  (and) and having the same intensity are, in turn, incident on a photosensitive surface to cause photoelectric emission. Explain, giving reason, in which case (i) more number of electron... read more

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