ScienceCLASS 7CBSEanswered 27 Mar 2026Q.Name two chemicals used to disinfect water.A.VERIFIED ANSWERfact-checked by tutorsSolution: Chlorine and Ozone are used to disinfect water.Suggested Q&ASCIENCE · CLASS 7ScienceCLASS 7Q.In towns and cities, generally, bore wells have to be dug very deep to get water as compared to bore wells dug in villages. Give suitable reasons.ScienceCLASS 7Q.Gardeners gently dig up the soil around the roots of garden herbs (plants) frequently. Give reasons.ScienceCLASS 7Q.Why is soil erosion relatively less in dense forests as compared to barren, open fields?ScienceCLASS 7Q.Continuously water-logged soils are disadvantageous for plant growth. Why?ScienceCLASS 7Q.15. Match the animals in Column I with their natural place of dwelling (habitat) in Column II. Column-I Column-II a) Earthworm i) Sand and beaches b) Garden Lizard ii) Burrows in soil c) Crab iii) Deep, narrow holes in dry soils d) Rodents iv) Surface of soil e) Scorpion v) Surface of shaded moist soils f) Snails and snugs vi) A horizon of moist soilsScienceCLASS 7Q.Rajasthan is a desert state in India. Once while travelling to Rajasthan by train, Boojho observed several streams and rivulets of rainwater during the journey, but to his surprise, he did not see streams of water in the desert region even during rains. Help Boojho find a suitable explanation for this.← More Science Q&A for Class 7BROWSE ALL Q&A →
