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Intext and Activity Questions Page 2 Q1: Is every Office Memorandum a major political decision? If not, what made this one different? Answer: No, not every Office Memorandum is a major political decision. Most are routine orders issued by the government every day. This specific one was different because it announced a major policy decision … Read more
Surface Areas and Volumes – Cone, Sphere, Hemisphere 1 Right Circular Cone What is it? A right circular cone is a solid shape generated by rotating a right-angled triangle around one of its perpendicular sides. It looks like an ice-cream cone or a birthday cap. Height (h): The straight distance from the vertex (top tip) … Read more
Question Set 1 (Page 3) 1. A force of 7 N acts on an object. The displacement is, say 8 m, in the direction of the force (Fig. 10.3). Let us take it that the force acts on the object through the displacement. What is the work done in this case? Answer: The work done … Read more
Page 2: Activity 3.1 What happens in the reaction flask? When the solutions X and Y are mixed, they react with each other. For example, if you mix copper sulphate (blue) and sodium carbonate, a chemical reaction happens and new substances are formed. Do you think that a chemical reaction has taken place? Yes, a … Read more
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
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 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