Complete Physical Science Maha Marathon for Madhyamik 2025: Key Concepts and Insights

Welcome to the Complete Physical Science Maha Marathon for Madhyamik 2025. This extensive video session, lasting approximately 5 hours and 40 minutes, is designed to help students achieve excellent marks in Physical Science. It is highly recommended to watch the video from start to finish to grasp all the essential concepts.

Importance of the Marathon

The marathon is structured to cover a wide range of topics that are crucial for the Madhyamik exams. Students are encouraged to take notes and refer to them for better retention and understanding. If you need additional notes for better preparation, you can contact the provided number for affordable resources.

Key Topics Covered

Greenhouse Gases

• Question: Which of the following is not a greenhouse gas?

  • Options: Methane, Water vapor, CO2, Oxygen
  • Answer: Oxygen (Option D)

• Question: Which greenhouse gas has the maximum contribution towards global warming?

  • Answer: CO2 (Option C)

Energy Sources

• Question: Which of the following is not a renewable source of energy?

  • Options: Tidal energy, Biomass energy, Petrol
  • Answer: Petrol

• Question: What is the SI unit of heat value of fuel?

  • Answer: Kilojoule per kg

Chemical Reactions and Properties

• Question: What is the SI unit of pressure?

  • Answer: Newton per meter squared

• Question: What is the main constituent of biogas?

  • Answer: Methane (CH4)

Atmospheric Layers and Weather Phenomena

• Question: In which layer of the atmosphere do storms occur?

  • Answer: Troposphere

• Question: Which gas absorbs long wavelength infrared radiation from the Earth's surface?

  • Answer: Greenhouse gases like CO2 and CH4

Physical Science Concepts

• Question: What is the calorific value of wood compared to LPG?

  • Answer: LPG has a higher calorific value than wood.

• Question: What is the main source of solar energy?

  • Answer: The Sun

Environmental Science

• Question: What is the effect of global warming?
  • Answer: Increased frequency of storms, melting of polar ice, and longer summer seasons.

Organic Chemistry Insights

• Question: What is the functional group of aldehydes?

  • Answer: -CHO (carbonyl group)

• Question: What is the simplest hydrocarbon?

  • Answer: Methane (CH4)

Conclusion

The Complete Physical Science Maha Marathon is an invaluable resource for students preparing for the Madhyamik exams. By understanding these key concepts and practicing the questions provided, students can enhance their knowledge and confidence in Physical Science. Remember to utilize the notes and resources available to you for optimal preparation. Best of luck in your studies!