In Chapter Excercise – 1 Q1. What do we get from cereals, pulses, fruits and vegetables? Ans: Cereals are the source of carbohydrates and are the main source of energy. Pulses provide protein for growth and development. Vegetables and fruits …
In Chapter Excercise–1 1. How does the sound produced by a vibrating object in a medium reach your ear? Solution: When an object vibrates, it necessitates the surrounding particles of the medium to vibrate. The particles that are adjacent to …
What you have learnt In chapter Exercise-1 1. 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 acts on the object …
NCERT Solutions for Class 9 Science Chapter 8: Force and Laws Of Motion (Uppdated Pattern) In chapter Exercise-1 1. State the universal law of gravitation. Solution: The universal law of gravitation states that every object in the universe attracts every …
In Chapter Excercise-1 1. Which of the following has more inertia: (a) a rubber ball and a stone of the same size? (b) a bicycle and a train? (c) a five-rupee coin and a one-rupee coin? Solution Since inertia is …
In Chapter Excercise-1 Solution Yes, an object which has moved through a distance can have zero displacement if it comes back to its initial position. Example: If a person jogs in a circular park which is circular and completes one …
In Chapter Exercise -1 1. What is a tissue? Solution: A tissue is defined as a cluster of cells, which are similar in structure and work together to perform a particular function. 2. What is the utility of tissues in …
What you have learnt In Chapter Exercise – 1 1. Who discovered cells, and how? Solution: In 1665, Robert Hooke discovered cells while examining a thin slice of cork through a self-designed microscope. He observed that the cork resembled the …
What you have learnt In Chapter Exercise-1 1. What are the canal rays? Solution: The radiations that are positively charged are canal rays. This discovery was crucial in the discovery of another subatomic particle that was positively charged – the …
What you have learnt In Chapter Exercise- 1 1. In a reaction, 5.3g of sodium carbonate reacted with 6 g of acetic acid. The products were 2.2 g of carbon dioxide, 0.9 g of water and 8.2 g of sodium …
What we have learnt In Lesson Exercise-1 1. What is meant by a substance? Solution: A substance is a pure single form of matter. It has definite properties and compositions. Example: Iron 2. List the points of difference between homogeneous …
Matter is an important concept in Science, and it forms the basis for topics that are taught in later classes. Learn more by referring to NCERT Solutions for Class 9 Science (Chemistry) Chapter 1 – Matter in Our Surroundings. Solutions are …