NCERT 8th Class (CBSE) Science: Sound – Quiz 26 Multiple Choice Questions related to NCERT 8th Class (CBSE) Science: Sound – Quiz: Sound is produced by rapid to and fro movements, called vibrations. The maximum distance to which an oscillating or vibrating object moves from its central position is called amplitude. …

NCERT 8th Class (CBSE) Social Science: Minerals and Power Resources – Quiz 27 Multiple Choice Questions related to NCERT 8th Class (CBSE) Social Science: Minerals and Power Resources – Quiz: A rock is an aggregate of one or more minerals. An ore is a rock from which minerals are mined. …

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. …

NCERT 8th Class (CBSE) Social Science: Resources – Quiz 30 Multiple Choice Questions related to NCERT 8th Class (CBSE) Social Science: Resources – Quiz: Resources that are drawn directly from nature are called natural resources. All our materials needs using gifts of nature such as rocks, minerals, soils rivers, plants …

NCERT 8th Class (CBSE) Science: Conservation of Plants and Animals – Quiz 22 Multiple Choice Questions related to NCERT 8th Class (CBSE) Science: Conservation of Plants and Animals – Quiz: Ecosystem consists of all the plants, animals and microorganisms in an area, along with all the non-living components, such as climate, …

Question: What is biodiversity? Answer: Biodiversity is the variety of plants, animals and microorganisms generally found in an area. Question: What do you mean by flora and fauna? Answer: Flora: Species of all plants found in a particular area is known as flora of that area. Fauna: Species of all animals found in …

NCERT 8th Class (CBSE) Social Science: Colonialism And Urban Change – Quiz 5 Multiple Choice Questions related to NCERT 8th Class (CBSE) Social Science: Colonialism And Urban Change – Quiz: They lived in the sprawling Civil Lines area that came up in the north. In 1911, when King George V …

NCERT 8th Class (CBSE) Social Science: The Great Uprising – Quiz 5 Multiple Choice Questions related to NCERT 8th Class (CBSE) Social Science: The Great Uprising – Quiz: Economic, political, social, religious and military causes were responsible for the revolt of 1857. A large part of North India was affected …

NCERT 8th Class (CBSE) Science: Combustion and Flame – Quiz 32 Multiple Choice Questions related to NCERT 8th Class (CBSE) Science: Combustion and Flame – Quiz: Combustion is the process in which a substance burns in air or oxygen to produce heat and light. When a hydrocarbon fuel is burnt in …

Question: What is combustion? Answer: The process of burning of substances in air or oxygen with the evolution of heat and light is known as combustion. Question: Distinguish between combustible and non-combustible substances, giving three examples of each. Answer:  Question: Why is it more difficult to burn some combustible substances than others? Answer: Different substances …