April 5, 2025
Q1. Choose the correct answer:Sound can travel through(a) Gases only(b) Solids only(c) Liquids only(d) Solids, Liquids, and Gases.Ans: (d) Solids, Liquids, and Gases.Sound speed in various medium […]
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April 5, 2025
Q1: Fill in the blanks(a) Most liquids that conduct electricity are solutions of, _______,______and ______.Ans: Acids, Bases and Salts Electricity can be conducted through a liquid when […]
April 5, 2025
Class 8 Science chapter “Some Natural Phenomena” deals with various natural phenomena such as lightning, earthquakes, and magnetism. It explains the causes and effects of these phenomena and how […]
April 5, 2025
Q1: Suppose you are in a dark room. Can you see objects in the room? Can you see objects outside the room? Explain.Ans: If a person is inside […]
April 5, 2025
Table of contents Page No. 27 Q1. In a reaction, 5.3 g of sodium carbonate reacted with 6 g of ethanoic acid. The products were 2.2 […]
April 5, 2025
Table of contents Page No. 39 Q1. What are canal rays?Ans: Canal rays are a type of positively charged radiation discovered by E. Goldstein in 1886. They are […]
April 5, 2025
Table of contents Page No. 51 Q1. Who discovered cells and how?Ans: Q2. Why is the cell called the structural and functional unit of life?Ans: Page […]
April 5, 2025
Table of contents Page No. 61 Q1. What is a tissue?Ans: A group of cells that are similar in structure and/or work together to achieve a particular […]
April 5, 2025
Table of contents Page No. 74 Q1. An object has moved through a distance. Can it have zero displacements? If yes, support your answer with an […]