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In-Chapter Questions and Activities Questions from Page 30 Question: Study the cases of Ram Saran (urban case) and Lakha Singh (rural case) and discuss the following issues related to poverty: Landlessness, Unemployment, Size of families, Illiteracy, Poor health/malnutrition, Child labour, Helplessness. Answer: By looking at the stories of Ram Saran and Lakha Singh, we can … Read more
Before You Read (Page 5) Question 1: In pairs, discuss three things that you like best about your school and three things about your school that you would like to change. Write them down. Answer: Three things I like best about my school: I love meeting my friends and playing with them during the break. … Read more
Activity 5.1 (Page 50) Question: What do we observe as we look through the lens? Can we draw the structures that we are able to see through the microscope, on an observation sheet? Does it look like Fig. 5.2? Answer: When we look through the lens of the microscope, we see small structures that … Read more
1 · When you look at plants, what changes do you notice as they grow? A growing plant makes new leaves and branches, becomes taller, and its stem gradually becomes thicker and stronger. 2 · What do you infer from Activity 10.1? The plant that got both sunlight and water grew best.A plant given sunlight … Read more
Activity 11.1 Questions: “• Take a tuning fork and set it vibrating by striking its prong on a rubber pad. Bring it near your ear. • Do you hear any sound? • Touch one of the prongs of the vibrating tuning fork with your finger and share your experience with your friends. • Now, suspend … 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