CBSE Class 10 Science Important Questions

Below are 10 important questions from Class 10 Science chapters that are important for preparing well and understanding concepts easily.

1. What is the structure of an atom?

The atom consists of a nucleus at the centre, which contains protons and neutrons. Protons are positively charged, while neutrons have no charge. Surrounding the nucleus are electrons, which are negatively charged and move in orbits. The number of protons in the nucleus determines the element, while the number of electrons affects the atom's charge.

2. Explain the process of photosynthesis.

Photosynthesis is how green plants convert sunlight into food. In this process, plants take in carbon dioxide from the air and water from the soil. Using sunlight and chlorophyll, they produce glucose (a type of sugar) and oxygen. This process is crucial for life on Earth as it provides food and oxygen for living organisms.

3. What are acids and bases?

Acids are substances that taste sour and turn blue litmus paper red. They release hydrogen ions in solution. Bases, on the other hand, taste bitter, feel slippery, and turn red litmus paper blue. They release hydroxide ions in solution. Both acids and bases can neutralise each other, forming salt and water.

4. Describe the human respiratory system.

The human respiratory system includes the nose, trachea, bronchi, and lungs. Air enters through the nose, passes down the trachea, and then splits into the bronchi that lead to each lung. Inside the lungs, oxygen is exchanged for carbon dioxide in tiny air sacs called alveoli. This process is essential for supplying oxygen to the blood.

5. What is the law of conservation of mass?

The law of conservation of mass states that mass cannot be created or destroyed in a chemical reaction. This means that the total mass of the reactants before a reaction is equal to the total mass of the products after the reaction. This principle helps in understanding how substances interact and transform during chemical processes.

6. Explain the concept of force and its types.

A force is a push or pull acting on an object that can cause it to move or change its motion. There are two main types of forces: contact forces, which require physical contact (like friction), and non-contact forces, which act at a distance (like gravity). Understanding forces helps explain how objects interact in our daily lives.

7. What are the properties of magnetism?

Magnetism is a property of materials that are attracted to magnets. Magnets have two poles: north and south. Like poles repel each other, while opposite poles attract. Magnetic fields can affect the behaviour of other magnetic materials, and they play a significant role in various applications, like electric motors and generators.

8. Discuss the water cycle.

The water cycle describes how water moves through the environment. It involves processes like evaporation (water turning into vapour), condensation (vapour forming clouds), and precipitation (rain or snow falling back to the ground). This cycle is essential for maintaining the balance of water on Earth and supports all forms of life.

9. What is the significance of the periodic table?

The periodic table organises all known elements based on their atomic number and properties. It helps scientists understand relationships between elements and predict their behaviour in reactions. The table is divided into groups and periods, showcasing trends in properties like reactivity and electronegativity, which are useful for studying chemistry.

10. Explain the concept of renewable and non-renewable resources.

Renewable resources are those that can be replenished naturally, like solar energy, wind energy, and biomass. They are sustainable and have a lower environmental impact. Non-renewable resources, like fossil fuels and minerals, are finite and take millions of years to form. Understanding these resources is vital for promoting sustainable development and conserving the environment.

Here are some key questions for Class 10 Science. For a clearer understanding of each chapter, refer to the Chapter-wise Important Questions table. This table will assist you in understanding the main concepts and preparing effectively for your exams.

How do Science Important Questions Class 10 Help you with Exams?

• Class 10 Science Important questions highlight the main ideas in each chapter, helping you concentrate on what matters most.

• By practising these questions, you can clarify difficult concepts and gain a deeper understanding of the subject.

• Familiarity with important questions can build your confidence, making you feel more prepared on exam day.

• Working on important questions helps you discover which topics you need to study more, allowing you to improve your overall performance.

• Important questions often mirror the style and format of exam questions, giving you a taste of what to expect.

• Practising these questions can help you learn how to manage your time during exams, ensuring you can answer all questions effectively.

Class 10 Science Important Questions from Vedantu are a valuable resource for students. They focus on key concepts, making it easier to study and understand the material. By practising these questions, students can build confidence, identify areas for improvement, and get used to the exam format. This preparation can lead to better performance on exam day, helping students achieve their academic goals. With Vedantu’s support, students can make their study time more effective and successful.

Additional Study Materials for Class 10 Science