The process of intermixing of two or more particles by their own is known as diffusion. The aroma of burnt incense sticks can be felt from a distance because of the diffusion of smoke particles in the air around.

Match the items in column A with the items in column B. Column A Column B 1. Latent heat of vaporisation of water a. No definite volume 2. Latent heat of fusion of ice b. Incompressible 3. Solid c. One Surface 4. Liquid d. 3 . 35 × 10 5 J kg - 1 5. Gas e. 22 . 6 × 10 5 J kg - 1

1. Latent heat of vaporisation of water is 22 . 6 × 10 5 J kg - 1 . The quantity of heat energy required to change 1 Kg of liquid into vapour at atmospheric pressure at its boiling point without any change of temperature is called the latent heat of vaporisation. 2. Latent heat of fusion of ice is 3 . 35 × 10 5 J kg - 1 . The quantity of heat energy required to change 1 Kg of ice into water at atmospheric pressure at its melting point without any change of temperature is called the latent heat of fusion of ice. 3. Solid is incompressible. They have closely packed molecules. 4. Liquid has one surface because the force of attraction is less between the atoms which do not allow it to have more than one free surface. 5. Gases have no definite volume. Their molecules are loosely packed. Column A Column B 1. Latent heat of vaporisation of water e. 22 . 6 × 10 5 J kg - 1 2. Latent heat of fusion of ice d. 3 . 35 × 10 5 J kg - 1 3. Solid b. Incompressible 4. Liquid c. One surface 5. Gas a. No definite volume

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LIVING SCIENCE CHEMISTRY 9>Chapter 1 - Matter in Our Surroundings>EXERCISES

Arun Syamal Solutions for Chapter: Matter in Our Surroundings, Exercise 2: EXERCISES

Author:Arun Syamal

Arun Syamal Chemistry Solutions for Exercise - Arun Syamal Solutions for Chapter: Matter in Our Surroundings, Exercise 2: EXERCISES

Attempt the free practice questions on Chapter 1: Matter in Our Surroundings, Exercise 2: EXERCISES with hints and solutions to strengthen your understanding. LIVING SCIENCE CHEMISTRY 9 solutions are prepared by Experienced Embibe Experts.

Questions from Arun Syamal Solutions for Chapter: Matter in Our Surroundings, Exercise 2: EXERCISES with Hints & Solutions

EASY

9th CBSE

IMPORTANT

LIVING SCIENCE CHEMISTRY 9>Chapter 1 - Matter in Our Surroundings>EXERCISES>Q 3

Define diffusion.

EASY

9th CBSE

IMPORTANT

LIVING SCIENCE CHEMISTRY 9>Chapter 1 - Matter in Our Surroundings>EXERCISES>Q F

Match the items in column A with the items in column B.

Column A	Column B
1. Latent heat of vaporisation of water	a. No definite volume
2. Latent heat of fusion of ice	b. Incompressible
3. Solid	c. One Surface
4. Liquid	d. $3.35 \times 10^{5} J {kg}^{- 1}$
5. Gas	e. $22.6 \times 10^{5} J kg^{- 1}$