Science

Electric Current and its Effects 7th Class NCERT CBSE Science Chapter 14 Question: Mention the name of the two devices that work on the basis of magnetic effects of current. Answer: The devices that work on the basis of magnetic effects of current are loudspeaker and electric bell. Electric Current and its …

Motion and Time 7th Class NCERT CBSE Science Chapter 13 Question: Give the basic unit of speed. Answer: Metre / second is the basic unit of speed. Motion and Time NCERT – Question: Mention which is the most common thing in almost all the clocks. Answer: The most common thing in almost …

Reproduction in Plants 7th Class NCERT CBSE Science Chapter 12 Question: Why is the process of reproduction necessary? Answer: The process of reproduction is necessary for the perpetuation and preservation of species and to increase the number of members of species. Question: If the filament of Spirogyra is broken into fragments. What …

Transportation in Animals and Plants 7th Class NCERT CBSE Science Chapter 11 Question: Name some useful products or materials that are carried by blood. Answer: Food, water and oxygen are the products that are carried by blood to every part of the body. Question: Circulatory system consists of three major organs. Name …

Respiration in Organisms 7th Class NCERT CBSE Science Chapter 10 Question: What are the end products of aerobic respiration. Answer: During aerobic respiration, carbon dioxide and water are released along with a large amount of energy. Question: The cellular respiration process takes place in which cell organelle? Answer: Cellular respiration takes place …

Soil 7th Class NCERT CBSE Science Chapter 09 Question: In how many groups the soil has been categorized? Name them. Answer: The soil has been categorized into four major groups, i.e. clay silt sand gravel Question: Which soil is considered to be the most fertile and used for growing crops? Answer: Loamy …

Winds, Storms and Cyclones 7th Class NCERT CBSE Science Chapter 08 Question: Why is Chandigarh unlikely to be affected by a cyclone? Answer: Chandigarh is unlikely to be affected by a cyclone because it is not near to the sea or an ocean. Question: Discuss the major cause of winds. Answer: Wind …

Weather, Climate and Adaptations of Animals to Climate 7th Class NCERT CBSE Science Chapter 07 Question: During rainy season, what do we use to protect ourselves from rainwater? Answer: We use umbrella or raincoat to protect ourselves from rainwater during rainy season. Question: A fish dies when taken out of water, whereas …

Physical and Chemical Changes 7th Class NCERT CBSE Science Chapter 06 Question: What kind of change is shown by tearing of paper? Answer: Tearing of paper is a physical change although, it cannot be reversed. Question: Melting of wax is a change where a solid changes to liquid state. Give one more …

Acids Bases and Salts 7th Class NCERT CBSE Science Chapter 05 Question: What is the test for acids and bases using litmus paper? Answer: Acids turn blue litmus paper red while bases turn red litmus paper blue. Question: What name is given to those substances which do not change the colour of …