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Measurement of Time and Motion 1. Calculate the speed of a car that travels 150 metres in 10 seconds. Express…
Heat Transfer in Nature 1. Choose the correct option in each case. (i) Your father bought a saucepan made of…
Changes Around Us: Physical and Chemical 1. Which of the following statements are the characteristics of a physical change? (i)…
Adolescence: A Stage of Growth and Change 1. Ramesh, an 11-year-old boy, developed a few pimples on his face. His…
The World of Metals and Non-metals 1. Which metal is commonly used to make food packaging materials as it is…
Electricity: Circuits and their Components 1. Choose the incorrect statement. (i) A switch is the source of electric current in…
Exploring Substances: Acidic, Basic, and Neutral 1. A solution turns the red litmus paper to blue. Excess addition of which…
📖 Question–Answer Set Q1. What is science according to this chapter? Answer:Science is not just a collection of facts. It…
वृक्षाः सत्पुरुषाः इव वयम् अभ्यासं कुर्मः २. पाठस्य आधारेण अधोलिखितानां प्रश्नानाम् उत्तराणि एकपदेन लिखन्तु । (क) वृक्षा: स्वयं कुत्र तिष्ठन्ति…