| Classwise Additional Science Questions with Solutions (Class 6th to 10th) | ||||||||||||||
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| Classwise Additional Science Questions with Solutions (Class 11th) | ||||||||||||||
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| Classwise Additional Science NCERT Questions with Solutions (Class 12th) | ||||||||||||||
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Class 6th Science Additional Questions
1. Food: Where Does It Come From?
This chapter explores the fundamental concept of food, detailing its varied sources which are broadly categorized as plants and animals. You will learn about the different edible parts of plants, such as roots (e.g., carrot), stems (e.g., potato), leaves (e.g., spinach), and seeds. The chapter also discusses various food products derived from animals, like milk, eggs, honey, and meat. It introduces the concept of dietary habits, classifying animals into three groups: herbivores (plant-eaters), carnivores (flesh-eaters), and omnivores (eaters of both). To test your understanding, this section provides additional short and long answer type questions beyond those in the NCERT and Exemplar books.
2. Components Of Food
Our food is a source of essential substances called nutrients, which are vital for our body's growth, energy, and overall health. This chapter details the major nutrients: Carbohydrates and Fats for energy, Proteins for building and repairing the body, and Vitamins and Minerals for protection against diseases. The importance of dietary fibre (roughage) and water is also emphasized. It introduces simple tests to detect the presence of starch, protein, and fat in food items and highlights the critical need for a balanced diet to prevent deficiency diseases like rickets or scurvy. To reinforce these concepts, this section offers a variety of extra short and long answer questions for practice.
3. Fibre To Fabric
This chapter explains the fascinating process of creating clothes, starting from the raw material, fibre, to the finished fabric. It distinguishes between natural fibres sourced from plants (like cotton and jute) and animals (like wool and silk), and man-made synthetic fibres. The chapter clearly explains the two main steps in textile production: spinning, the process of making yarn from fibres, and weaving or knitting, the methods used to convert yarn into fabric. For a deeper understanding of this process, a collection of supplementary short and long answer questions is provided here.
4. Sorting Materials Into Groups
This chapter introduces the scientific skill of classification by explaining how to group different materials based on their shared properties. It explores various characteristics used for sorting, such as appearance (e.g., lustre), hardness, solubility in water (soluble or insoluble), buoyancy (whether materials float or sink), and their interaction with light (transparent, translucent, or opaque). This systematic grouping helps in studying materials efficiently and selecting the right material for a specific purpose. To master this skill, this section contains additional short and long answer type questions for you to solve.
5. Separation Of Substances
In our daily lives, we often encounter mixtures from which we need to separate useful or harmful components. This chapter introduces several simple yet effective separation techniques. You will learn about methods like handpicking, threshing, winnowing, and sieving for separating solid-solid mixtures. For separating solids from liquids, techniques such as sedimentation, decantation, and filtration are explained. The chapter also covers evaporation and condensation for separating soluble solids from a liquid. To practice applying these methods, this section provides extra short and long answer questions.
6. Changes Around Us
This chapter explores the various transformations or changes that constantly occur in our environment. It provides a simple classification for these changes, distinguishing between reversible changes, which can be reversed to their original form (like melting wax), and irreversible changes, which are permanent and cannot be undone (like burning wood). The chapter also examines how external factors like heating or cooling can cause physical changes such as expansion and contraction. To help you better differentiate between these changes, this section offers additional short and long answer type questions.
7. Getting To Know Plants
This chapter provides a detailed introduction to the world of plants. It classifies plants into three main categories: herbs, shrubs, and trees, based on their size and stem characteristics. It then explores the different parts of a plant—root, stem, leaf, flower, and fruit—and explains their primary functions. You will learn about the root system (taproot and fibrous), the transport function of the stem, the process of photosynthesis in leaves, and the reproductive role of the flower. To test your knowledge of plant structures and functions, this section includes supplementary short and long answer questions.
8. Body Movements
This chapter explains the mechanics of movement in humans and other animals. It details how the human skeletal system provides a framework and how the coordinated action of bones and muscles produces movement. A key focus is on joints, the points where bones meet, with descriptions of different types like the ball and socket joint and the hinge joint. The chapter also offers a fascinating look at the gait of various animals, explaining how creatures like earthworms, snails, and fish move, showcasing the diversity of locomotion. To further explore these concepts, a set of additional short and long answer questions is available here.
9. The Living Organisms — Characteristics And Habitats
This chapter delves into the essence of life by defining the key characteristics of living organisms, such as growth, respiration, and response to stimuli. It introduces the concept of a habitat, the natural environment where an organism lives, and explores different types of habitats like terrestrial and aquatic. A central theme is adaptation—the special features that enable organisms to survive and thrive in their specific environments. Examples like the camel's adaptations for the desert highlight this concept. This section provides extra short and long answer questions to deepen your understanding of life and its diversity.
10. Motion And Measurement Of Distances
This chapter introduces the fundamental concepts of motion and the importance of accurate measurement. It describes different types of motion, including rectilinear (straight line), circular, and periodic motion. The chapter emphasizes the need for standard units of measurement to ensure consistency and introduces the SI system, with the metre as the standard unit of length. It provides practical guidance on how to measure length correctly, including the length of a curved line. To practice these skills and concepts, this section contains a set of additional short and long answer questions.
11. Light, Shadows And Reflections
This chapter explores the basic properties of light. It establishes the key principle that light travels in straight lines, a property that explains the formation of shadows. The chapter discusses how shadows are formed when an opaque object blocks light and introduces the concepts of luminous and non-luminous objects. It also explains the phenomenon of reflection, where light bounces off a smooth, shiny surface like a mirror, leading to the formation of an image. The working of a pinhole camera is used as a simple application of these principles. To test these concepts, supplementary short and long answer questions are provided here.
12. Electricity And Circuits
This chapter provides a basic introduction to electricity. It defines an electric circuit as the complete path for the flow of electric current. The chapter identifies the essential components of a simple circuit: an electric cell (source), a bulb (load), a switch, and connecting wires. It explains the crucial difference between a closed circuit, where the current flows and the bulb lights up, and an open circuit, where a break in the path stops the current flow. The concepts of conductors and insulators are also introduced. To reinforce your learning, this section offers extra short and long answer questions.
13. Fun With Magnets
This chapter introduces the fascinating world of magnets. It explains the properties of magnets, such as their ability to attract magnetic materials like iron. A key concept is the existence of two magnetic poles (North and South) in every magnet. The chapter demonstrates the fundamental law of magnetism: like poles repel, and unlike poles attract. It also highlights the directional property of a freely suspended magnet, which is the principle behind the magnetic compass. To explore these magnetic properties further, a collection of additional short and long answer questions is available in this section.
14. Water
This chapter highlights the vital importance of water as a precious natural resource. It discusses the various uses of water and its presence in three states. The central concept explained is the water cycle, the continuous circulation of water between the Earth's surface and the atmosphere through the processes of evaporation, condensation, and precipitation. The chapter raises awareness about the issues of floods and droughts and strongly emphasizes the need for water conservation and practices like rainwater harvesting. To delve deeper into this critical topic, this section provides supplementary short and long answer questions.
15. Air Around Us
This chapter explores the properties and composition of the invisible but essential substance all around us: air. It describes air as a mixture of gases, mainly Nitrogen and Oxygen, and discusses the importance of its components for living things (e.g., oxygen for respiration, carbon dioxide for photosynthesis). The chapter demonstrates that air occupies space and is present everywhere, even in soil and water. The concept of the atmosphere is introduced, and the chapter touches upon the role of moving air (wind) and the problem of air pollution. To enhance your understanding, this section offers a variety of extra short and long answer questions.
16. Garbage In, Garbage Out
This chapter addresses the growing environmental problem of garbage and the importance of its proper management. It categorizes waste into two main types: biodegradable (which rots and mixes with soil) and non-biodegradable (which does not rot, like plastic). The chapter discusses effective waste disposal methods, focusing on making compost from biodegradable waste, including vermicomposting with redworms. It strongly advocates for the 3 Rs—Reduce, Reuse, and Recycle—as a practical approach for every individual to minimize waste and contribute to a cleaner environment. To practice these concepts, additional short and long answer questions are provided here.