Give every Question your best shot and write the PERFECT ANSWER everytime!! Imagine you are seated in the exam hall, waiting to get your hands on that much anticipated piece of paper- THE EXAMINATION PAPER!! You are loaded with a ton of information in your brain. Your finger tips are numb and your face blank! … Read more
Class 10 Science Chapter 1 Chemical Reactions & Equations Study Notes Here we are providing study notes for class 10 science chapter 1 chemical reactions and equations. Students can use these study notes for better understanding of the topics. This study notes are very helpful for exam preparation. The process in which new substances with … Read more
Very Short Answer Type Questions [1 Mark Each] 1. Which of the following conditions is not sufficient for SHM and why? (a) Acceleration α displacement (b) Restoring force α displacement Answer Answer: Condition (a) is not sufficient as the direction of acceleration is opposite to displacement and that needs to be mentioned. 2. A particle … Read more
Newton’s Corpuscular theory This theory was proposed by Sir Isacc Newton in 1678. According to this theory, known as corpuscular theory, light consists of stream of extremely light and tiny material particles known as corpuscles. These particles are shot out by every point of a source of light with a very high speed. When the … Read more
VERY SHORT ANSWER TYPE QUESTIONS (1 Mark) Q1. What is a hydrocarbon?Ans. It is a compound of hydrogen and carbon. Q2. Give different forms in which carbon occurs in nature.Ans. Carbon occurs in free form e.g., graphite and diamond in combined form like carbon dioxide, carbonates, etc.In earth’s crust–0.02% and in atmosphere–0.03%. Q3. Name two … Read more
Questions A disc of metal is melted and a solid sphere is formed. What will happen to the moment of inertia about a vertical axis passing through the centre? What are the unit and dimensions of moment of inertia ? Is it a vector ? Is radius of gyration of the body a … Read more
DETAILED SOLUTION
1. The changes which take place in substances can be broadly classified as physical changes and chemical changes. 2. During a physical change, only the state of the substance changes, but not its chemical composition. Furthermore, a physical change is a temporary change, which can be reversed by changing the physical experimental conditions. At the … Read more
