Tag Archives: NCERT Books Online Solutions

Question: What did hunter-gatherers do to sustain themselves? Answer: They hunted wild animals, caught fish and birds, gathered fruits, roots, nuts, seeds, leaves, stalks and eggs, in order to sustain themselves. Question: Why was hunting animals difficult for the people? Answer: Hunting animals was difficult because there were several animals …

Question: What was known as a qasba in medieval India? Answer: During the Sultanate Period (13th to 16th Centuries CE), many of the villages, especially the district headquarters, slowly grew into towns, known as qasba. Question: Name a city that was both an administrative and a trade center during the Mughal …

Question: What do you know about the location of the Sulaiman and Kirthar hills? Or Where are the Sulaiman and Kirthar hills located? Answer: The Sulaiman and Kirthar hills are located In the modem day Pakistan. Question: Name any two animals which the people of the Sulaiman and Kirthar hills …

Question: What is the composition of air? or Write a short note on the composition of air. Answer: Air is mixture of nitrogen, oxygen, carbon dioxide, water vapour and a few other gases. Some dust particles may also be present in it. Air is a mixture of gases, mainly containing …

Question: Distinguish between bio-degradable and non bio-degradable. Answer: Biodegradable waste: Waste that will decay and mix with soil. Microorganisms can convert this waste into simpler from. Peels, meat, leaves are the example. Non biodegradable wast: Waste that will not decay and mix soil. Microorganisms cannot convert this waste into simpler …

Question: Why does a freely suspended magnet point in the north-south direction? Answer: It is believed that earth behaves like a big bar magnet with it south pole towards geographical north-pole. That’s why a freely suspended magnet points in north-south directions. Question: Briefly explain the properties of magnet. Answer: The properties …

Question: Draw a circuit diagram showing a bulb connected with a cell. Answer: Circuit diagram showing a bulb connected with a cell Bulb connected with a cell Question: What is an electric circuit? The classed path around which an electric current flows is known as electric circuit. Question: Why is …

Question: We see the sun rising 8 1/4 minutes after it has risen. Why? Answer: The speed of light is 3 lakh per second. The sun’s raise take time to reach on earth. Question: Name two sources of light and two man-mad sources of light. Answer: Man-mad source of light are: …

Question: How to conserve water? Answer: The various ways to conserve water are: Creating awareness among people about the need and ways to conserve water. Turn off the taps immediately after use. We should get the baking taps repaired immediately. Wash the utensils by filling water basin. We should take …

Question: When is an object said to be in motion? Answer: An object is said to be in motion when its position change with time in respect to a stationary object. Question: Differentiate between rotatory motion and translatory motion. Answer: Rotatory motion: Different parts of the body caver different distances is …