The Making of the National Movement: 1870s–1947

In-text Question (page 93) Question: On the basis of what you have read about these issues, do you think Indians were discontented with British rule? If so, how were different groups and classes dissatisfied? Answer: Yes, Indians were discontented with British rule. Different groups had different reasons: • Peasants were unhappy because high land taxes … Read more

Some Natural Phenomena

A. IN-TEXT ACTIVITIES Activity 12.1 Question (text from the book): “Take a used ballpen refill and rub it vigorously with a piece of polythene. Bring it close to small pieces of paper. Take care not to touch the rubbed end of the refill with your hand or with a metallic object. Repeat the activity with … Read more

Light

 A) IN-TEXT QUESTIONS AND ACTIVITIES Activity 13.1 Question (as described in the text): You fix a white sheet of paper on a board. Take a comb and cover all its openings except one in the middle. Shine a torch through the open space so that a narrow beam of light falls on the sheet of … Read more

Confronting Marginalisation

1. “State one reason why you think reservations play an important role in providing social justice to Dalits and Adivasis.” Answer: Reservations help Dalits and Adivasis by giving them fair chances in education and jobs. Because these communities were kept away from good schools and jobs for many years, reservations make sure they get extra … Read more

Sound

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

Human Resources

In-text Activity Question 1: “Study Fig. 5.1 and find out: of the world’s total population which continent has — (a) only 5 per cent (b) only 13 per cent (c) only 1 per cent (d) only 12 per cent” Answer: (a) North America has only 5% (b) Africa has only 13% (c) Oceania (Australia, New … Read more

Chap 2 : Acids, Bases and Salts

In-text Question (Page 18) Question: You have been provided with three test tubes. One of them contains distilled water and the other two contain an acidic solution and a basic solution, respectively. If you are given only red litmus paper, how will you identify the contents of each test tube? Answer: Dip the red litmus … Read more

chap 12 – Magnetic Effects of Electric Current

In-text Question (Page 195) Question: Why does a compass needle get deflected when brought near a bar magnet? Answer: A compass needle is actually a tiny bar magnet. When it is brought near another magnet (like a bar magnet), the magnetic field around the bar magnet acts on the compass needle. This magnetic force causes … Read more

CHEMICAL EFFECTS OF ELECTRIC CURRENT

Activity 11.1 Question: “However, if the bulb does not glow, it means that the tester is not working. Can you think of the possible reasons?” Answer: The bulb may not glow if the connections are loose, if the bulb is fused, or if the cells in the tester have no power left. Tightening the connections, … Read more

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