Home
Class 11
CHEMISTRY
Assertion (A) : Three states of matter a...

Assertion (A) : Three states of matter are the result of balance between intermolecular forces and thermal energy of the molecules.
Reason (R ) : Intermolecular forces tend to keep the molecules together but thermal energy of molecules tends to keep them apart.

A

Both A and R are true and R is the correct explanation of A

B

Both A and R are true but R is not the correct explanation of A

C

A is true but R is false.

D

A is false but R is true.

Text Solution

Verified by Experts

The correct Answer is:
A

Both assertion and reason are true and reason is the correct explanation of assertion. Intermolecular forces and thermal energy decides the state of matter as the former kept the molecules together but after some time, it keeps them apart.
Promotional Banner

Topper's Solved these Questions

  • STATES OF MATTER

    KUMAR PRAKASHAN|Exercise SECTION - D SOLUTION OF NCERT EXEMPLAR PROBLEMS (Long Answer Type Questions)|6 Videos
  • STATES OF MATTER

    KUMAR PRAKASHAN|Exercise QUESTION PAPER FROM MODULE (SECTION - A)|4 Videos
  • STATES OF MATTER

    KUMAR PRAKASHAN|Exercise SECTION - D SOLUTION OF NCERT EXEMPLAR PROBLEMS (Matching The Columns)|3 Videos
  • SOME BASIC CONCEPTS OF CHEMISTRY

    KUMAR PRAKASHAN|Exercise Section - D (Solutions of NCERT Exemplar Problems) (Long Answer Type Questions)|4 Videos
  • STRUCTURE OF ATOM

    KUMAR PRAKASHAN|Exercise QUESTINS PAPER FROM MODULE (SECTION -D)|2 Videos

Similar Questions

Explore conceptually related problems

Assertion : Surface tension decreases with increase in temperature . Reason : On increasing temperature kinetic energy increases and intermolecular forces decreases .

Surafce tension is exhibited by liquids due to force of attraction between the molecules of the liquid .The surface tension decreases with increases in temperature and vanishes at boiling point Given that the latent heat of vaporization for water L_(v)=540(kcal)/(kg) the mechanical equivalent of heat J=4.2(J)/(cal) density of water rho_(w)=10^(3)kgl^(-1) ,Avogadro'sno. N_(A)=6.0xx10^(26)k " mole"^(-1) . Molecular weight of water M_(A)=10kg , for 1k mole . (a) Estimate the energy required for one molecule of water to evaporated. (b) Show that the inter molecular distance for water is d=((M_(A))/(N_(A))xx(1)/(rho_(w)))^((1)/(3)) and find its value. (c ) 1 g of water in the vapour state at 1 atm occupies 1601cm^(3) , estimate the intermolecular distance at boiling point in the vapour state. (d) During vaporisation a molecule overcomes a force F, assumed constant to go from an inter molecular distance d to d .Estimate the value of F. (e ) Caculate (F)/(d) , which is a measure of the surface tension.