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Question 1: Are the tape and rod similar to the scale that the elder sister has in her geometry box? What did mother mean by char angula? Answer: Yes, the tape and the rod are similar to the scale in the geometry box because they are all used to measure length. The tape is flexible, … Read more
In-Chapter Questions and Activities Question 1: Why cannot a tumbler made of cloth be used for storing water? Answer: A tumbler made of cloth cannot be used for storing water because cloth allows water to pass through it. The water will leak out, and the cloth will become wet. Therefore, we cannot hold water in … Read more
Question 1: What similarities and differences did you find among the plants that you observed? Answer: Similarities: All plants have stems and leaves. Many have flowers. They all need sunlight, water, and soil to grow. Differences: Some plants are tall, while others are short. Stems can be thick or thin, hard or soft. Leaves come … Read more
Intext Questions and Answers Question: Study the given map for the forest cover and try to find the reasons as to why certain states have more forest area as compared to others? Answer: Certain states have more forest area because of factors like climate, rainfall, and terrain. States with high rainfall and favorable climate, such … Read more
In-Text Questions and Answers Question 1: A force of 7 N acts on an object. The displacement is 8 m in the direction of the force. What is the work done in this case? Answer: Work done is calculated by multiplying the force by the displacement in the direction of the force. So, Work done … Read more
Question 1: In a reaction, 5.3 g of sodium carbonate reacted with 6 g of acetic acid. The products were 2.2 g of carbon dioxide, 0.9 g of water, and 8.2 g of sodium acetate. Show that these observations are in agreement with the law of conservation of mass. Answer: Total mass of reactants: Mass … Read more
In-Text Questions and Answers What are canal rays? Answer: Canal rays are streams of positively charged particles discovered by E. Goldstein. They are also known as anode rays. These rays are produced in a gas discharge tube and move in a direction opposite to that of electrons. If an atom contains one electron and one … Read more
In-text Questions 1. Why 82°30’E has been selected as the Standard Meridian of India? India is a large country, with a time lag of two hours from the easternmost point to the westernmost point. To avoid confusion, 82°30’E longitude, which passes through Mirzapur in Uttar Pradesh, is chosen as the Standard Meridian of India because … Read more
1. Describe the circumstances leading to the outbreak of revolutionary protest in France. Answer:The French Revolution started because the common people were heavily taxed while the clergy and nobility enjoyed privileges. France’s debt from wars and the monarchy’s lavish spending worsened the economy, causing food shortages and high bread prices. The spread of ideas about … Read more
1. Choose the right answer from the four alternatives given below. (i) A landmass bounded by sea on three sides is referred to as: (a) Coast (b) Island (c) Peninsula (d) None of the above Answer: (c) Peninsula (ii) Mountain ranges in the eastern part of India forming its boundary with Myanmar are collectively called: … Read more