CBSE Class Class 10 Science 2 Marks Important Questions for 2024 Board Exam

CBSE 10th Science 2 Marks Questions: The CBSE Class 10 Science Board Paper 2024 will comprise 39 questions distributed into five sections. Section B will be the section of the question paper that will have six questions of two marks each. Thus, this whole section will have 12 marks. It is suggested that answers to these questions should be in the range of 30 to 50 words. There are multiple topics out of which 2-mark questions can be formed.

Here, you will get chapter-wise 2-mark questions for CBSE Class 10 Science. These questions will be from important topics, and you might see related questions in your exam paper. Check out the 10th 2-mark questions with solutions here in a chapter-wise PDF.

List of Important Questions of 2 Marks for Class 10th Science with Solutions

1. . Define the Right-Hand Thumb Rule for determining the direction of the magnetic field around a straight current-carrying conductor.

   Answer: The Right-Hand Thumb Rule states: Imagine wrapping your right hand around the straight conductor with your thumb pointing in the direction of the current flow. The curled fingers indicate the direction of the magnetic field lines circling around the conductor.

2. Balance the following chemical equation and state the type of reaction: CaCO₃ + HCl → CaCl₂ + CO₂ + H₂O

Answer: CaCO₃ + 2HCl → CaCl₂ + CO₂ + H₂O (Double displacement reaction). In this case, calcium carbonate (CaCO₃) reacts with hydrochloric acid (HCl) to produce calcium chloride (CaCl₂), carbon dioxide (CO₂), and water (H₂O).

3. What happens when zinc sulphate solution is added to barium chloride solution? Identify the precipitate formed and type of reaction.

Answer: White precipitate of barium sulphate forms. It is a double displacement reaction.

When zinc sulfate solution (ZnSO₄) is added to barium chloride solution (BaCl₂), a precipitation reaction occurs. The balanced chemical equation for the reaction is:

ZnSO₄ + BaCl₂→ZnCl₂ + BaSO₄ 

In this reaction, zinc sulfate reacts with barium chloride to produce zinc chloride (ZnCl₂) and barium sulfate (BaSO₄ ). The barium sulfate formed is insoluble in water and appears as a white precipitate. So, the precipitate formed is BaSO₄, and the type of reaction is a double displacement reaction with the formation of a precipitate.

4. What happens to a compass needle placed near a current-carrying wire?

   Answer: When a current-carrying wire is brought near a compass needle, the magnetic field generated by the current interacts with the Earth's magnetic field, causing the needle to deflect from its north-south direction. The deflection direction depends on the direction of the current and the position of the wire relative to the needle.

5. Write the chemical equation for the reaction between magnesium metal and dilute hydrochloric acid. Identify the gas evolved and its characteristic property.

Answer: Mg + 2HCl → MgCl₂ + H₂ (Hydrogen gas; burns with a popping sound)

6. Explain the concept of coefficients in a balanced chemical equation.

Answer: Coefficients represent the number of molecules or atoms of each reactant and product involved in the reaction, ensuring the law of conservation of mass.

More Class 10th Important 2 Marks Questions for Practice

Check the chapter-wise 2 mark questions below. Click on the chapter and download the PDF.

• CBSE Class 10 Science Chapter 1 Chemical Reactions and Equations 2 mark questions
• CBSE Class 10 Science Chapter 2 Acids, Bases, and Salts 2 mark questions
• CBSE Class 10 Science Chapter 3 Metals and Non-Metals 2 mark questions
• CBSE Class 10 Science Chapter 4 Carbon and Its Compounds 2 mark questions
• CBSE Class 10 Science Chapter 5 Life Processes 2 mark questions
• CBSE Class 10 Science Chapter 6 Control and Coordination 2 mark questions
• CBSE Class 10 Science Chapter 7 How do organisms reproduce 2 mark questions
• CBSE Class 10 Science Chapter 8 Heredity 2 mark questions
• CBSE Class 10 Science Chapter 9 Light Reflection and Refraction 2 mark questions
• CBSE Class 10 Science Chapter 10 The Human Eye and The Colourful World 2 mark questions
• CBSE Class 10 Science Chapter 11 Electricity 2 mark questions
• CBSE Class 10 Science Chapter 12 Magnetic Effects of Electric Current 2 mark questions
• CBSE Class 10 Science Chapter 13 Our Environment 2 mark questions

CBSE Class 10 Science Unit-Wise Weightage

Follow the table below to know the unit-wise mark distribution and accordingly aim for the chapters to be revised during the final board exam.

Read: CBSE Class 10 Science 60 Day Routine

CBSE Class 10 Science Question Paper Pattern

Check the CBSE Class 10 Science Board Exam 2024 question paper pattern and build a time management strategy accordingly. 

Must Read: Top 50+ CBSE Class 10 MCQs for Board Exam 2024 with Answers to Secure Good Marks

Also Read:

• CBSE Date Sheet 2024
• Revised NCERT Textbooks Class 10
• CBSE Class 10 Sample Paper 2024
• CBSE Class 12 Science Syllabus 2023-24
• CBSE Class 10 Science Mind Map For Quick Revision
• CBSE Class 10 Science Additional Practice Questions 2024
• CBSE Class 10 Science Competency Based Questions 2024