The Bihar Board Class 10 Science Question Paper for 2018 is designed to test the knowledge and understanding of students across various science subjects. Below are sample questions and answers to help you prepare effectively.
Photosynthesis is the process through which plants convert light energy into chemical energy. It takes place in the chloroplasts of plant cells, where chlorophyll absorbs sunlight. The plants use water and carbon dioxide to produce glucose and oxygen.
What is the role of the respiratory system in humans?
The respiratory system helps in the exchange of gases. It allows the intake of oxygen and the removal of carbon dioxide. The lungs are the primary organs of this system, and the process of breathing ensures that oxygen is supplied to the blood while carbon dioxide is removed.
What are the types of asexual reproduction in plants?
Asexual reproduction in plants includes methods like budding, fragmentation, and vegetative propagation. In these processes, new plants are produced without the involvement of seeds, using parts like stems, roots, or leaves.
Describe the human digestive system.
The human digestive system consists of several organs, including the mouth, esophagus, stomach, small intestine, and large intestine. Food is broken down into smaller molecules, absorbed in the intestines, and waste is eliminated through the rectum.
How does blood circulation work in humans?
Blood circulation is carried out by the heart, which pumps blood through a network of arteries and veins. The circulatory system has two main circuits: the pulmonary circuit that sends blood to the lungs for oxygenation and the systemic circuit that delivers oxygenated blood to the rest of the body.
Physics
What is the law of reflection?
The law of reflection states that when a light ray strikes a surface, the angle of incidence (the angle between the incoming ray and the normal) is equal to the angle of reflection (the angle between the reflected ray and the normal).
Explain the concept of force.
Force is a push or pull that causes an object to move, stop, or change direction. It can also change the shape of an object. Force is measured in newtons and is classified into contact forces and non-contact forces.
What is the difference between speed and velocity?
Speed is the distance traveled per unit of time, whereas velocity is the speed of an object in a specific direction. Velocity is a vector quantity, which means it has both magnitude and direction.
Define work in physics.
In physics, work is done when a force acts on an object to move it a certain distance. The amount of work is the product of the force applied and the distance over which it is applied.
What is the principle of conservation of energy?
The principle of conservation of energy states that energy cannot be created or destroyed; it can only be transformed from one form to another. The total energy of an isolated system remains constant.
Chemistry
What is an atom?
An atom is the smallest unit of matter that retains the properties of an element. It consists of a nucleus containing protons and neutrons, surrounded by electrons that orbit the nucleus in energy levels.
Explain the process of distillation.
Distillation is a method of separating mixtures based on differences in boiling points. The liquid is heated to its boiling point, and the vapor is collected and condensed into a separate container, leaving impurities behind.
What is the difference between an ionic bond and a covalent bond?
An ionic bond is formed when electrons are transferred from one atom to another, creating oppositely charged ions that attract each other. A covalent bond is formed when two atoms share electrons.
What is the pH scale?
The pH scale measures the acidity or basicity of a substance. It ranges from 0 to 14, with 7 being neutral. Values less than 7 indicate acidity, and values greater than 7 indicate alkalinity.
What is the law of definite proportions?
The law of definite proportions states that a chemical compound always contains the same elements in the same proportions by mass, regardless of the sample’s size or source.
Water conservation is crucial because water is a limited resource. By conserving water, we help preserve it for future generations, ensure sustainable use, and protect ecosystems that depend on clean water sources.
Describe the process of recycling.
Recycling involves the collection and processing of materials like paper, plastic, and metal to create new products. This reduces the need for raw materials, conserves energy, and reduces pollution.
What are renewable and non-renewable resources?
Renewable resources are those that can be replenished naturally, like sunlight, wind, and water. Non-renewable resources, like coal, oil, and natural gas, are finite and will eventually run out.
What is global warming?
Global warming refers to the long-term increase in Earth’s average surface temperature due to human activities, particularly the emission of greenhouse gases like carbon dioxide.
What is the greenhouse effect?
The greenhouse effect occurs when certain gases, like carbon dioxide and methane, trap heat in the Earth’s atmosphere, leading to an increase in global temperatures.
Sample Questions and Answers (Continued for Other Subjects)
The rest of the sample questions and answers can be drawn from the syllabus for subjects like Mathematics, Social Science, and English, which would cover a similar range of topics. However, the format and complexity of the questions might vary based on the specific subject’s syllabus.
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Mathematics (20 Questions)
What is the Pythagorean theorem?
The Pythagorean theorem states that in a right-angled triangle, the square of the length of the hypotenuse is equal to the sum of the squares of the lengths of the other two sides.
Define the terms “ratio” and “proportion.”
A ratio is a comparison of two numbers by division. Proportion is an equation that shows two ratios are equal.
What is a quadratic equation?
A quadratic equation is a second-degree polynomial equation in the form of ax² + bx + c = 0, where a, b, and c are constants, and x represents an unknown variable.
Explain the concept of average.
The average is calculated by adding all the numbers together and dividing the sum by the total number of values. It is also known as the mean.
What is a circle’s circumference?
The circumference of a circle is the distance around it and is calculated by the formula C = 2πr, where r is the radius of the circle.
Social Science (20 Questions)
What is democracy?
Democracy is a form of government where the people have the authority to choose their governing legislators through elections.
Describe the causes of World War I.
The main causes of World War I include militarism, alliances, imperialism, and nationalism, alongside the assassination of Archduke Franz Ferdinand.
What are the fundamental rights guaranteed by the Indian Constitution?
The fundamental rights include the right to equality, freedom of speech, protection from exploitation, and the right to education, among others.
Explain the significance of the Industrial Revolution.
The Industrial Revolution marked a period of significant technological and economic changes, including the rise of factories, mass production, and urbanization.
What is the role of the United Nations?
The United Nations is an international organization that aims to promote peace, security, and cooperation among countries, addressing issues like human rights, development, and international law.
A simile is a figure of speech that compares two different things using “like” or “as” to highlight similarities.
Define the term “metaphor.”
A metaphor is a figure of speech that directly compares two unlike things without using “like” or “as,” stating that one thing is another.
What is the main theme of the poem “If” by Rudyard Kipling?
The main theme of “If” is resilience and the importance of maintaining one’s principles and composure in the face of adversity.
Explain the significance of setting in a story.
The setting of a story refers to the time and place in which it takes place. It helps establish the mood, atmosphere, and context for the characters’ actions.
What is personification?
Personification is a literary device where human qualities are attributed to non-human objects or abstract concepts, such as saying “the wind whispered.”
What is the purpose of dialogue in a play?
Dialogue in a play serves to reveal character traits, advance the plot, and convey themes or emotions.
These questions and answers are designed to cover a range of topics to help students prepare for their exams effectively.
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Recommended Indian Books for Bihar Board Class 10 Science Question Paper 2018
“Science for Class 10” by Laxmi Publications
This book covers the entire Class 10 Science syllabus with detailed explanations, illustrations, and practice questions. It provides theoretical content as well as numerous questions, including MCQs, short answer, and long answer types, which align with the Bihar Board exam pattern.
“Together with Science” by Arya Publications
A comprehensive guide with chapter-wise summaries, practice questions, and sample papers. The book focuses on understanding concepts in Physics, Chemistry, and Biology, offering a variety of question types including case study-based questions, which are commonly asked in the exams.
“Science Class 10” by R.S. Aggarwal
This book provides a systematic approach to the Class 10 Science syllabus with concept-based explanations and application-based questions. It includes a good collection of solved examples, exercises, and previous years’ questions to prepare students for the exams.
“Arihant All In One Science” by Arihant Publications
This book is a one-stop solution for the Science subject. It covers all three branches—Physics, Chemistry, and Biology—thoroughly. It includes chapter summaries, important formulae, and previous year’s questions with solutions, as well as practice sets.
“Science for Class 10” by VK Jaiswal
A reliable book that focuses on concept clarity and practice. It contains topic-wise exercises and explanations, with a wide variety of questions for practice, from easy to difficult. It includes a section of model test papers to help students simulate exam conditions.
“Concepts of Physics” by H.C. Verma (Volume 1 and 2)
Although primarily for higher grades, this book is widely regarded for building a strong foundation in Physics. It contains clear explanations, conceptual questions, and a mix of problems for rigorous practice, making it useful for students aiming for excellence in the Science paper.
“Understanding Physics for Class 10” by D.C. Pandey
This book offers simple explanations of scientific concepts and comes with a collection of important questions. Each chapter ends with multiple-choice questions and descriptive questions, helping students solidify their understanding and prepare for the board exams.
“Objective Science” by M.L. Aggarwal
A focused objective question book that is ideal for practice before exams. It has chapter-end questions in multiple-choice, fill-in-the-blanks, and matching type questions. This book helps students focus on key concepts and formulas.
“New Millennium Science for Class 10” by Avichal Publishing Company
The book provides a thorough explanation of the topics and follows the Bihar Board syllabus closely. It offers a variety of questions, from objective type to subjective, with detailed answers to assist in exam preparation.
“Science 10th Standard” by Goyal Brothers Prakashan
This book contains well-structured chapters with simple explanations, along with practice questions and model papers. It helps students prepare for the board exams through regular revision and test practice.
“NCERT Science Textbook for Class 10” by NCERT
The official NCERT textbook, it covers all chapters prescribed by the Bihar Board in a well-organized format. It is widely recommended for concept building, offering theory, practice questions, and real-world applications of scientific concepts.
“Exemplar Problems in Science Class 10” by NCERT
This book provides advanced-level questions designed to improve problem-solving skills. It helps students prepare for tricky and application-based questions commonly asked in board exams.
“Target Class 10 Science” by O.P. Aggarwal
A highly detailed book that offers concept-based content followed by a wide variety of objective and subjective questions. It is ideal for revising and strengthening theoretical knowledge with practical questions.
“Lab Manual Science Class 10” by Sahitya Bhawan
A practical guide to all the experiments in the Class 10 Science syllabus, helping students understand the laboratory methods and observations. It includes question papers and activities to help students grasp practical aspects of the subject.
“S. Chand’s Science for Class 10” by S. Chand
This book provides a comprehensive approach to understanding Science. It features detailed explanations of each chapter, important formulas, solved examples, and practice questions. The book is tailored to meet the requirements of the Bihar Board curriculum.
“Bihar Board Class 10 Science Sample Papers” by Bihar Board
A book designed specifically for the Bihar Board Class 10 exam preparation. It includes sample papers, model test papers, and previous year’s questions to give students an edge in exam preparation.
“Comprehensive Science for Class 10” by S.K. Gupta
This book presents a complete study package with theory and practice questions in all three branches—Physics, Chemistry, and Biology. It includes solved examples, diagrams, and short as well as long questions for thorough practice.
“Success in Science Class 10” by R.P. Yadav
A very student-friendly book with clear concepts, practice questions, and model test papers. It is suitable for students looking for practice material and explanations that directly align with the Bihar Board exam format.
“High School Science: Physics, Chemistry, Biology” by K.K. Tiwari
The book covers all essential topics for Class 10 Science with focus on the three main branches. It is designed to help students with comprehensive revisions and includes many practice questions after each chapter.
“Tata McGraw-Hill Science for Class 10” by Tata McGraw-Hill
This book includes extensive explanations of scientific concepts and provides a variety of question types, including practical and theoretical ones. It is designed to give students a clear understanding of all the topics covered in the Bihar Board syllabus.
These books cover all the important topics and are useful in preparing for the Bihar Board Class 10 Science exam. They provide a combination of theoretical knowledge, practical questions, and sample papers that align with the exam pattern and help students strengthen their concepts.
