Tag Archives: CBSE Class 8 NCERT Solutions

Question: What is the Vanamahotsava? Answer: The social programme of planting trees, organised at community level is called Vanamahotsava. Question: How is a bird like vulture important for the ecosystem? Answer: A vulture feeds on dead livestock and so it cleanses the environment. Question: What is the distinguishing feature between evergreen …

Question: Distinguish between the following: Answer: 1. Focus and epicenter: Focus:  Focus is the point below the surface of the earth where an earthquake originates. This is the point where rocks first rupture or break when an earthquake takes place due to movement of bedrock and release of energy in …

Question: What is the present average density population of World and India? Answer: Average density population of the world is 45 persons per sq. km. and India is 364 persons per sq. km. Question: Name is least populous continent of the world. Answer: Antarctica is the least populated continent in …

Question: Why does a comb rubbed on hair attract pieces of paper? Answer: The comb on rubbing became gets electrically charged and attract pieces of paper. This is called electrostatic force. Question: Under what conditions do charges attract or repel each other? Answer: Like charges repel and unlike charges attract each other. …

Question: Name large scale industries. Answer: The large scale industries are as under: Textile industries Iron and Steel industry Sugar industry Cement industry Aircraft industry Question: Why is iron and steel industry called basic industry? Answer: The iron and steel industry is called a basic industry because it provides iron and …

Question: How is sound produced? Answer: Sound is produced by rapid to-and-fro movements called vibrations. Question: Distinguish between infrasonic and ultrasonic. Answer: Difference is as follows: Question: What do you mean by time period of a vibrating object? Answer: The time taken for one complete vibration or oscillation is called its time period. Question:What is …

Question: Write a short note explaining the different cropping seasons. Answer: There are three major cropping seasons, i.e. Rabi, Kharif and Zaid. Rabi: Crops are sown in winters between October to December and harvested between February to April. Major crops of this season are: wheat, barley, peas, gram, and oil seeds. …

Question: What are the possible reasons behind the uneven distribution of population around the world? Answer: The reasons behind uneven population distribution are mainly the varied conditions of land and climate. Question: Give three common forms of land use. Answer: Three common land use forms are: As cropland Pasture Forests. …

Question: Define industry. Answer: Industry refers to an economic activity that is concerned with production of goods, extraction of minerals or provision of services. Question: Name three common methods of classifying industries. Answer: Industries are classified according to raw material used, size and ownership. Question: Expand the abbreviation AMUL. Where …

Question: Differentiate between a rock and an ore. Answer: A rock is an aggregate of one or more minerals. An ore is a rock from which minerals are mined. Question: Define quarrying. Answer: Quarrying is a process of extraction in which minerals lying near the surface are simply dug out. …