CBSE Class 8 Science MCQs with Answers & Explanations

Overview

Course Overview: CBSE Class 8 Science – MCQs with Answers and Explanations

The CBSE Class 8 Science – MCQs with Answers and Explanations course is designed to help students build a strong conceptual foundation in Science through objective-type questions based on the latest CBSE syllabus and NCERT guidelines. This course serves as an effective practice and revision tool for school exams, unit tests, Olympiads, and other competitive assessments.

It covers all major themes of Class 8 Science — Physics, Chemistry, and Biology — presented chapter-wise in the form of Multiple Choice Questions (MCQs). Each question is accompanied by the correct answer and a clear, student-friendly explanation to ensure conceptual clarity rather than rote learning.

Class 8 Science MCQs with Answers
CBSE Class 8 Science Objective Questions
NCERT Class 8 Science MCQ Practice
Class 8 Science Chapter-wise MCQs
CBSE Class 8 Science Quiz with Explanations

Curriculum

18 Sections
72 Lessons
Lifetime

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SECTION 1: CROP PRODUCTION AND MANAGEMENT
This section introduces the basic agricultural practices involved in growing crops. It covers topics such as preparation of soil, sowing, use of manures and fertilizers, irrigation methods, weed control, harvesting, and storage. Students learn about different crop seasons (Kharif and Rabi) and modern farming techniques, helping them understand how food is produced and managed efficiently for sustainable agriculture.
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SECTION 2: MICROORGANISMS – FRIEND AND FOE
This section explores the world of microorganisms and their dual role in our lives. It explains useful microbes involved in food production, medicine, and nitrogen fixation, as well as harmful ones that cause diseases and food spoilage. Students also learn about food preservation methods and the importance of hygiene in preventing microbial infections.
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SECTION 3: SYNTHETIC FIBRES AND PLASTICS
This section introduces synthetic fibres such as nylon, polyester, and acrylic, and explains how they differ from natural fibres. It also covers types of plastics, their properties, uses, and environmental impact. Students learn about the advantages of synthetic materials along with the importance of reducing plastic use and promoting recycling.
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SECTION 4: MATERIALS – METALS AND NON-METALS
This section explains the physical and chemical properties of metals and non-metals. It covers their uses, reactions with air and water, displacement reactions, and the process of corrosion. Students learn how these materials are essential in daily life and industry, along with methods to prevent metal deterioration.
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SECTION 5: COAL AND PETROLEUM
This section focuses on fossil fuels such as coal and petroleum, their formation, extraction, and uses. It explains products obtained from petroleum refining and the importance of these fuels in daily life. Students also learn about non-renewable natural resources and the need for their conservation for sustainable development.
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SECTION 6: COMBUSTION AND FLAME
This section explains the process of combustion and the conditions necessary for burning. It covers types of combustion, fuels and their calorific values, and the structure of a flame. Students also learn about fire safety, efficient fuel use, and the environmental effects of burning fuels.
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SECTION 7: CONSERVATION OF PLANTS AND ANIMALS
This section highlights the importance of conserving biodiversity. It discusses deforestation, its causes and effects, and the need to protect wildlife. Students learn about national parks, wildlife sanctuaries, biosphere reserves, and conservation efforts to maintain ecological balance and safeguard endangered species.
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SECTION 8: CELL – STRUCTURE AND FUNCTIONS
This section introduces the cell as the basic unit of life. It explains the structure and functions of plant and animal cells, including key organelles like the nucleus, cytoplasm, and cell membrane. Students also learn about differences between unicellular and multicellular organisms and the role of cells in living processes.
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SECTION 9: REPRODUCTION IN ANIMALS
This section explains how animals reproduce to continue their species. It covers modes of reproduction, including sexual and asexual reproduction, fertilisation, and development of the embryo. Students also learn about the human reproductive system and various stages of growth from birth to adulthood.
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SECTION 10: REACHING THE AGE OF ADOLESCENCE
This section discusses the physical and emotional changes that occur during adolescence. It explains puberty, hormonal changes, development of reproductive organs, and the role of the endocrine system. Students also learn about personal health, hygiene, and the importance of a balanced diet during this stage of growth.
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SECTION 11: FORCE AND PRESSURE
This section explains the concepts of force and pressure and their effects on objects. It covers types of forces such as contact and non-contact forces, and how pressure acts in solids, liquids, and gases. Students also learn about atmospheric pressure and its applications in everyday life.
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SECTION 12: FRICTION
This section explains friction as a force that opposes motion between surfaces in contact. It covers different types of friction, factors affecting it, and its advantages and disadvantages. Students also learn methods to increase or reduce friction and its importance in daily activities.
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SECTION 13: SOUND
This section introduces sound as a form of energy produced by vibrations. It explains how sound travels through different mediums, its characteristics such as pitch and loudness, and the range of audible sounds. Students also learn about noise pollution and ways to control it.
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SECTION 14: CHEMICAL EFFECTS OF ELECTRIC CURRENT
This section explains how electric current can produce chemical changes. It covers conductors and insulators of electricity in liquids, electrolysis, and the process of electroplating. Students learn about practical applications of these chemical effects in industries and everyday life.
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SECTION 15: SOME NATURAL PHENOMENA
This section explores natural events such as lightning and earthquakes. It explains the causes of these phenomena, safety measures to follow during such events, and the role of devices like lightning conductors. Students gain awareness about disaster preparedness and protection.
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SECTION 16: LIGHT
This section explains the properties and behavior of light. It covers reflection, laws of reflection, types of mirrors, and the structure and function of the human eye. Students also learn about dispersion of light and its role in natural phenomena like rainbows.
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SECTION 17: STARS AND THE SOLAR SYSTEM
This section introduces celestial bodies such as stars, planets, satellites, and comets. It explains the structure of the solar system, characteristics of different planets, and the role of artificial satellites. Students gain basic knowledge about space and astronomical observations.
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SECTION 18: POLLUTION OF AIR AND WATER
This section discusses the causes and effects of air and water pollution. It explains major pollutants, their impact on health and the environment, and methods to control pollution. Students also learn the importance of conservation and sustainable practices to protect natural resources.
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