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 …

NCERT 8th Class (CBSE) Social Science: Human Resources – Quiz 12 Multiple Choice Questions related to NCERT 8th Class (CBSE) Social Science: Human Resources – Quiz: Average density population of the world is 45 persons per sq. km. and India is 364 persons per sq. km. Age-sex pyramid also known as …

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. …

NCERT 8th Class (CBSE) Social Science: Industries – Comparative Studies – Quiz 12 Multiple Choice Questions related to NCERT 8th Class (CBSE) Social Science: Industries – Comparative Studies – Quiz: The iron and steel industry is called a basic industry because it provides iron and steel for manufacturing tool and machines …

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 …

NCERT 8th Class (CBSE) Social Science: Major Crops And Agricultural – Quiz 5 Multiple Choice Questions related to NCERT 8th Class (CBSE) Social Science: Major Crops And Agricultural – Quiz: Rice is grown in hot and humid tropical and subtropical regions. Wheat is cultivated in the mid-latitudes and in the …

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. …

NCERT 8th Class (CBSE) Social Science: Natural Resources – Land, Soil and Water – Quiz 21 Multiple Choice Questions related to NCERT 8th Class (CBSE) Social Science: Natural Resources-Land, Soil and Water – Quiz: The earth’s surface has about three-fourths water, so it is called “water planet”. Fresh water is …