Work and Energy Science Class 9 Chapter 10 Question & Answer

Solutions For All Chapters Science Class 9 Questions From NCERT Textbook  Q1. Look at the activities listed below. Reason out whether or not work is done in the light of your understanding of the term ‘work’. (a) Suma is swimming in a pond. (b) A donkey is carrying a load on its back. (c) A […]

Structure of The Atom Science Class 9 Chapter 4 Question Answer

Solutions For All Chapters Science Class 9 Questions from NCERT Text Book Question 1. Compare the properties of electrons, protons and neutrons. Answer: Electrons Protons Neutrons Negatively charged. Positively charged No charge Mass is negligible (1/1800 times of protons). Mass is 1 a.m.u. Mass is 1 a.m.u. Get attracted towards +ve charge. Get attracted towards […]

Is Matter Around Us Pure Science Class 9 Chapter 2 Question Answer

Solutions For All Chapters Science Class 9 Question 1. Which separation techniques will you apply for the separation of the following? (a) Sodium chloride from its solution in water. (b) Ammonium chloride from a mixture containing sodium chloride and ammonium chloride. (c) Small pieces of metal in the engine oil of a car. (d) Different […]

Matter in Our Surroundings Science Class 9 Chapter 1 Question Answer

Solutions For All Chapters Science Class 9 Question 1. Convert the following temperatures to the Celsius scale. (a) 293 K (b) 470 K. Answer: (a) 293 K into °C 293 – 273 = 20°C (b) 470 K into °C 470 – 273 = 197°C Question 2. Convert the following temperatures to the Kelvin scale. (a) […]