CBSE Class 9 – Chemistry Page No:17 Solution 1 The condition for something to be called matter is that it should occupy space and have mass. Solution 2 Diffusion and Brownian motion. Solution 3 Diffusion. Solution 4 The characteristic of matter illustrated by this observation is that the particles of matter have spaces between them. Solution 5 This displays that each
Lakhmir Singh Solutions
Class 9 Physics Lakhmir Singh and Manjit Kaur Solutions CHAPTER 4 WORK AND ENERGY
Page 145 Solution 1 Mass = m Height above the ground = h Work done = Potential energy acquired by the body = m x g x h where g is acceleration due to gravity Solution 2 SI unit of work is Joule (J). Solution 3 Work is a scalar quantity. Work, as a physical quantity, requires only magnitude to
Class 9 Physics Lakhmir Singh and Manjit Kaur Solutions CHAPTER 3 GRAVITATION
Lakhmir Singh Physics Class 9 Solutions Page No:100 Question 1: What is the value of gravitational constant G (i) on the earth, and (ii) on the moon ? Solution : Value of gravitational constant G on the earth and the moon is = 6.67 x 10-11 Nm2/kg2 Note that the value of G always remains constant irrespective
Class 9 Physics Lakhmir Singh and Manjit Kaur Solutions CHAPTER 2 FORCE AND LAWS OF MOTION
Lakhmir Singh Physics Class 9 Solutions Page No:55 Question 1: What name is given to the product of mass and velocity of a body ? Solution : The product of mass and velocity of a body is called momentum. Question 2: Name the physical quantity which is considered to be a measure of the quantity of motion
Class 9 Physics Lakhmir Singh and Manjit Kaur Solutions CHAPTER 1 MOTION
Lakhmir Singh Physics Class 9 Solutions Page No:19 Question 1: Is displacement a scalar quantity ? Solution : No, displacement is a vector quantity. Question 2: State whether distance is a scalar or a vector quantity. Solution : Distance is a scalar quantity. Question 3: Change the speed of 6 m/s into km/h. Solution : 6 m/s = 6 x (3600/1000) km/hr = 21.6km/hr Question
Lakhmir Singh and Manjit Kaur Solutions for Class 10 Biology
Chapter 1 - Life Processes Chapter 2 - Control and Coordination Chapter 3 - How do Organisms Reproduce? Chapter 4 - Heredity and Evolution Chapter 5 - Our Environment Chapter 6 - Management Of Natural Resources
Lakhmir Singh and Manjit Kaur Solutions for Class 10 Physics
Chapter 1 - Electricity Chapter 2 - Magnetic Effects of Electric Current Chapter 3 - Sources of Energy Chapter 4 - Reflection of Light Chapter 5 - Refraction of Light Chapter 6 - The Human Eyes And The Colorful World
Lakhmir Singh and Manjit Kaur Solutions for Class 10 Chemistry
Chapter 1 - Chemical Reactions and Equations Chapter 2 - Acids, Bases and Salts Chapter 3 - Metals and Non-metals Chapter 4 - Carbon And Its Compounds Chapter 5 - Periodic Classification Of Elements
Lakhmir Singh and Manjit Kaur Solutions for Class 9 Chemistry
Chapter 1 - Matter in Our Surroundings Chapter 2 - Is Matter Around Us Pure ? Chapter 3 - Atoms and Molecules Chapter 4 - Structure Of The Atom
Lakhmir Singh and Manjit Kaur Solutions for Class 9 Physics
Chapter 1 - Motion Chapter 2 - Force and laws of motion Chapter 3 - Gravitation Chapter 4 - Work and energy Chapter 5 - Sound