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 …

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. …

NCERT 8th Class (CBSE) Social Science: Natural Resources – Natural Vegetation – Quiz 10 Multiple Choice Questions related to NCERT 8th Class (CBSE) Social Science: Natural Resources-Natural Vegetation – Quiz: The equatorial forests have evergreen trees, while the monsoon forest have deciduous trees.  Elephants, crocodiles, zebras, leopards, camels and ostriches …