EASY
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All gases are made up of a large number of . (tiny particles/ big particles)
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Important Questions on States of Matter: Gaseous and Liquid States
MEDIUM
The speed of the gas molecules contained in a closed vessel at fixed temperature and pressure is the same.
EASY
A molecule of is two times heavier than a molecule. At the average kinetic energy of molecule is
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Select from the box, the correct gas law related to the given situation.
| Boyle's law, Charles law, Avagadro's law |
An inflated balloon kept at sunlight bursts after some time.
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Find out the ratio of the volumes occupied by , and , gases at temperature and pressure. ()
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The quantity corresponds to
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A fixed mass of a gas occupies a volume of at a fixed temperature and a pressure of 1 atmosphere. What volume will the gas occupy at that temperature and at a pressure of 1.5 atmosphere?
MEDIUM
At STP an ideal gas occupies a volume of . What volume will the gas occupy at pressure and at temperature of ?
EASY
The average energy per molecule of a gas at a given temperature, is
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Two flasks and have equal volumes. is maintained at and at . Equal masses of and are taken in flasks and respectively. Find the ratio of total of gases in flask to that of .
MEDIUM
How many times the volume of a diatomic gas should be increased reversibly and adiabatically in order to reduce its RMS velocity to half of its intial value.
EASY
Predict the correct order of rate of diffusion of the following molecules.
MEDIUM
What is the kinetic energy (in ) of the nitrogen molecule at ?
MEDIUM
Which of the following statement(s) (are) correct regarding the root-mean-square speed and average translational kinetic energy of a molecule in a gas at equilibrium?
EASY
List the main points of difference between a solid, a liquid and a gas.
MEDIUM
Give reason for the following.
Liquids have one free upper surface only.
MEDIUM
Give reasons for the following :
Tea or coffee is sipped from the saucer when it is quite hot.
MEDIUM
What are the main postulate of ‘Kinetic Molecular Theory of Liquids ? On the basis of this model, how can you explain the following properties of liquids ?
(i) Volume
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A gas can be compressed to a fraction of its volume. The same volume of a gas can be spread all over a room. The reason for this is that
MEDIUM
A substance A has a definite volume and it assumes the shape of any container in which it is kept. Predict the physical state of the substance.
MEDIUM
State in which of the three states of matter the movement of the particles are neither about their own positions nor in any random direction.
