NCERT Solutions Std 7 Science Respiration in Organisms

Respiration in Organisms   Exercise: 1). Why does an athlete breathe faster and deeper than usual after finishing the race? Ans: An athlete needs more energy during and after the race. As the demand of energy is high, it needs more supply of oxygen. Therefore to fulfil the demand of oxygen an athlete breaths fast and …

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NCERT Solutions Std 7 Science Winds, Storms and Cyclones

Winds, Storms and Cyclones Exercise: 1). Fill the missing word in the blank spaces in the following statements: (a) Wind is moving air. (b) Winds are generated due to uneven heating on the earth. (c) Near the earth’s surface warm air rises up whereas comparatively cooler air comes down. (d) Air moves from a region of …

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NCERT Solutions Std 7 Science Weather, Climate and Adaptations of Animals to Climate

Weather, Climate and Adaptations of Animals to Climate Exercise: 1). Name the elements that determine the weather of a place.       The elements that determine the weather of a place are temperature, humidity, rainfall during the past 24 hours and wind speed. 2). When are the maximum and minimum temperatures likely to occur …

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NCERT Solutions Std 6 CBSE Science Garbage In Garbage Out

Garbage In Garbage Out Click here for the solutions of 16). Garbage In Garbage Out 15). Air Around Us 14). Water 13). Fun with Magnets 12). Electricity and Circuits 11). Light, Shadows and Reflection 10). Motion and the Measurement of Distances 9). The Living Organisms – Characteristics and Habitats 8). Body Movements 7). Getting to …

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NCERT Solutions Std 6 CBSE Science Air Around Us

Air Around Us Click here for the solutions of 16). Garbage In Garbage Out 15). Air Around Us 14). Water 13). Fun with Magnets 12). Electricity and Circuits 11). Light, Shadows and Reflection 10). Motion and the Measurement of Distances 9). The Living Organisms – Characteristics and Habitats 8). Body Movements 7). Getting to Know …

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NCERT Solutions Std 7 Science Physical and Chemical Changes

Physical and Chemical Changes Exercise:   1). Classify the changes involved in the following processes as physical or chemical changes: (a) Photosynthesis (b) Dissolving sugar in water (c) Burning of coal (d) Melting of wax (e) Beating aluminium to make aluminium foil (f ) Digestion of food Physical Changes Chemical Changes Dissolving sugar in water …

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NCERT Solutions Std 7 Science Acids, Bases and Salts

Acids, Bases and Salts Exercise: 1). State differences between acids and bases. Acids Bases 1. Acids are substances that contain hydrogen ion.   1. Bases are substances that contain hydroxyl ion. 2. Acid turns blue litmus red.   2. Base turns red litmus blue. 3. Acids are sour to taste.   3. Bases are bitter …

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NCERT Solutions Std 7 Science Heat

Heat Exercise: 1). State similarities and differences between the laboratory thermometer and the clinical thermometer. Similarities: i). both consists of long, narrow, uniform glass tube. ii). both have mercury in the bulb. iii). both has Celsius scale on the glass tube Differences:   Laboratory thermometer Clinical thermometer 1. The laboratory thermometer is designed to measure …

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NCERT Solutions Std 7 Science Fibre to Fabric

Fibre To Fabric Exercise: 1). You must be familiar with the following nursery rhymes: (i) ‘Baa baa black sheep, have you any wool.’ (ii) ‘Mary had a little lamb, whose fleece was white as snow.’ Answer the following: (a) Which parts of the black sheep have wool?  Ans: Fleece – the hairy skin of the …

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