Chapter 11: Work Power and Energy
NCERT Textbook for Class 9 Science – Page 148Q1: A force of 7 N acts on an object. The displacement is, say 8 m, in the direction of the force. Let us take it that the force…
Chapter 12: Sound
IN-TEXT QUESTIONS SOLVED NCERT Textbook for Class 9 Science – Page 162Question 1. How does the sound produced by a vibrating object in a medium reach your ear?Answer: Air is the commonest material through which sound propagates. When…
Chapter 13: Why Do We Fall Ill
In-Text Questions Solved NCERT Textbook for Class 9 Science – Page 178:Question 1. State any two conditions for good health Answer: Two conditions essential for good health are: Question 2. State any two conditions essential for being free of…
Chapter 14: Natural Resources
Page: 193Question 1. How is our atmosphere different from the atmosphere on Venus and Mars? (SA II – 2013)Answer: Our atmosphere contains a mixture of many gases like nitrogen (78.08%), oxygen (20.95%), carbon dioxide (0.03%) and water vapor (in…
Chapter 15: Improvement in Food Resources
NCERT Solutions For Class 9 Science Chapter 15 Improvement in Food Resources Topics and Sub Topics in Class 9 In-Text Questions Solved NCERT Textbook for Class 9 Science – Page 204Question 1. What do we get from…
