Class 5 Evs Chapter 12 Questions and Answers - Free PDF Download
FAQs on NCERT Solutions For Class 5 Evs Chapter 12 What If It Finishes - 2025-26
1. What are the main topics for which solutions are provided in NCERT Solutions for Class 5 EVS Chapter 12, 'What If It Finishes'?
The NCERT Solutions for Class 5 EVS Chapter 12 primarily cover topics related to finite natural resources. The solutions explain the origin and extraction of petroleum, its various uses, the problems arising from its overuse such as pollution, and the urgent need for fuel conservation for future generations. These solutions guide students through exercises that explore these concepts in detail.
2. How does the NCERT textbook for Class 5 explain where we get petrol and diesel from?
According to the NCERT textbook, petrol and diesel are derived from a deep, smelly, thick liquid called petroleum, which is considered a 'treasure' from the earth. It is found deep under the ground and is extracted using powerful machines and special techniques. This raw petroleum is then sent to a refinery where it is cleaned and processed to separate it into various products, including petrol, diesel, kerosene, and LPG.
3. According to Chapter 12, what problems can be caused by the smoke coming out of vehicles?
The NCERT chapter explains that smoke from vehicles causes several problems for both health and the environment. The solutions for the chapter's exercises highlight these issues, which include:
- Health problems like coughing, nausea, headaches, and lung diseases.
- Air pollution, which makes the air harmful to breathe.
- Long-term damage to the environment and historical monuments due to harmful gases.
4. Why is it so important to use petrol and diesel carefully, as explained in 'What If It Finishes'?
It is crucial to use petrol and diesel carefully because they are non-renewable resources. This means they are limited and cannot be made again quickly. The chapter 'What If It Finishes' emphasizes that it takes millions of years for petroleum to form underground. If we use it wastefully, it will run out, and future generations will not have access to it. Therefore, every drop saved helps in preserving this valuable resource.
5. How should a student correctly solve questions about fuel conservation based on the CBSE pattern for Class 5?
To correctly solve questions on fuel conservation as per the CBSE pattern, a student should follow these steps: First, identify the situation in the question (e.g., waiting at a traffic signal). Second, recall the conservation methods taught in the chapter, such as switching off the engine, using public transport, or carpooling. Third, write the suggested solution clearly, explaining how it saves fuel and reduces pollution. This step-by-step approach ensures a complete and accurate answer.
6. What might happen if your village or city did not get petrol or diesel for one week, as imagined in the chapter?
If petrol and diesel were unavailable for a week, life would be severely disrupted. The NCERT Solutions explore this scenario, suggesting that:
- Transportation would stop: People could not go to work or school, and buses would not run.
- Supply of goods would halt: Trucks carrying food, vegetables, and milk would be stuck, leading to shortages.
- Emergency services like ambulances and police vehicles would be unable to operate effectively.
7. What are the different products obtained from petroleum that are mentioned in Class 5 EVS Chapter 12?
The chapter and its corresponding NCERT solutions mention that petroleum is refined to get several useful products. These include:
- Fuels like Petrol, Diesel, and Kerosene.
- LPG (Liquefied Petroleum Gas) for cooking.
- Lubricants like Engine Oil and Grease.
- Other materials such as Wax, Coal Tar, and products used for making plastics and paints.
8. Besides switching off engines, what other solutions does Chapter 12 suggest for the problems caused by vehicles?
While switching off engines is a key step, the chapter encourages thinking about broader solutions to reduce fuel consumption and pollution. The NCERT Solutions guide students to identify alternatives such as:
- Using public transport like buses and trains.
- Carpooling, which means sharing a car with others.
- Walking or using a bicycle for short distances.
- Using vehicles that run on alternative fuels like CNG or electricity.
9. How can I use the NCERT Solutions for Chapter 12 to answer questions about data tables related to fuel?
The NCERT textbook for the 2025-26 session often includes tables showing fuel prices or vehicle mileage. To solve these questions using the solutions, you should first learn to read the data correctly (e.g., price per litre, distance per litre). Then, follow the step-by-step calculations shown in the solutions to perform tasks like comparing fuel efficiency between two cars or calculating the total cost of fuel for a journey. This helps in developing analytical skills.
10. What does EVS stand for in the context of Class 5 NCERT solutions?
In the context of Class 5 NCERT solutions, EVS stands for Environmental Studies. This subject integrates concepts from science, social science, and environmental education to help students understand their surroundings and their relationship with the environment.
