RBSE Solutions Class 5 Environmental Studies Chapter 22 How to Save Fuel

Chapter 22 How To Save Fuel

Text Book Questions

Look At The Figure And Discuss The Following Points (Page No. 125)

Question 1. Which vehicles do you see in the figure?
Answer: Many different vehicles are seen in the picture on page 125. These include a bus, a car, a truck, an auto-rickshaw, a motorcycle, a tempo, and a scooter. Identifying common modes of transport helps us understand their impact on fuel use.
In simple words: The picture shows vehicles like buses, cars, trucks, autos, motorcycles, and scooters.

🎯 Exam Tip: When describing a figure, list all visible objects clearly and concisely, focusing on the main elements.

Question 2. What type of fuel is used in the vehicles?
Answer: Most of these vehicles use petrol or diesel as their fuel. These are common fuels used to make engines run. It is important to know which fuel each vehicle uses for proper maintenance and usage.
In simple words: These vehicles mostly use petrol and diesel to run.

🎯 Exam Tip: Remember the two main types of fuel for most vehicles: petrol and diesel.

Question 3. Which are the vehicles that do not require petrol as fuel?
Answer: Some vehicles do not need petrol to run. These include battery-operated rickshaw-cycles, horse carts, bullock carts, and camel carts. These vehicles often use animal power or electricity instead of fossil fuels.
In simple words: Vehicles like battery rickshaws, horse carts, bullock carts, and camel carts do not use petrol.

🎯 Exam Tip: Think about non-motorized transport or vehicles that use alternative energy sources when asked about petrol-free options.

Think And Answer The Following (Page No. 125)

Question 1. Which vehicles are there in your home?
Answer: At our home, we have a car, a motorcycle, and a scooter. These are commonly owned personal vehicles for family use. Owning different types of vehicles helps meet various transportation needs.
In simple words: We have a car, a motorcycle, and a scooter at home.

🎯 Exam Tip: When answering personal questions, be specific about common items or experiences.

Question 2. Which vehicles do your family members use to go out to work?
Answer: Our family members primarily use a motorcycle to travel to work. Motorcycles are a popular and efficient way to commute, especially for shorter distances. They are often chosen for their convenience and fuel efficiency.
In simple words: Our family members use a motorcycle to go to work.

🎯 Exam Tip: Focus on the most frequent mode of transport used by family members for work.

Explore And Write The Answers Of The Following (Page No. 127)

Question 1. The names of some vehicles are given below. Make a table in your notebook and complete it.
Answer:

🎯 Exam Tip: When completing tables, make sure all values are accurate and match the correct rows and columns.

Think And Discuss These Points (Page No. 128)

Question 1. If petrol/diesel is not available in your village/city for 10 days, then what will happen?
Answer: If petrol and diesel were not available for 10 days in our village or city, it would cause major problems for transportation. People would not be able to travel from one place to another. Farmers would also struggle, as tractors could not plough fields and motor pumps could not irrigate crops. This highlights how dependent we are on these fuels for daily life and work.
In simple words: If petrol and diesel are not available for 10 days, transport will stop, and farmers cannot work, causing big problems for everyone.

🎯 Exam Tip: Think broadly about all aspects of daily life and work that rely on fuel when discussing its unavailability.

Question 3. Except petrol and diesel, what else can be used to run the vehicles?
Answer: Besides petrol and diesel, vehicles can also run on other types of fuel. These include LPG (Liquefied Petroleum Gas), CNG (Compressed Natural Gas), kerosene, and even electricity from batteries or solar power. Using these alternative fuels can help reduce our reliance on traditional fossil fuels.
In simple words: Vehicles can also use LPG, CNG, kerosene, batteries, or solar power instead of petrol and diesel.

🎯 Exam Tip: List a variety of alternative fuels, including both gaseous and renewable options like solar power.

Question 4. If all the people travel by car or jeep instead of going by bus, then how many vehicles would be required and what will be its disadvantages?
Answer: If everyone chose to travel by car or jeep instead of using a bus, each family would need about 3-4 cars. This would greatly increase how much fuel is used and would also lead to more air pollution. Public transport like buses helps save fuel and reduce pollution because one bus carries many people.
In simple words: If everyone used cars instead of buses, families would need many cars, which would use more fuel and cause more air pollution.

🎯 Exam Tip: Emphasize the increased fuel consumption and environmental impact when comparing individual versus public transport.

Things To Do (Page No. 129)

Question 1. Make a collection of slogans related to the conservation of fuel and discuss about them in the class.
Answer:
(i) Fuel is available in a very small amount on Earth. We must use it wisely and not waste it, so that there is enough for our children and grandchildren. Conserving fuel helps protect the planet for everyone.
(ii) Every single drop of fuel is precious to us. So, we should turn off our vehicle engines when we are waiting in traffic. Saving fuel at every opportunity makes a big difference over time.
(iii) "Save oil, it is your good habit” is a simple and effective slogan. Good habits in saving resources benefit everyone in the long run.
(iv) We should make smart use of fuel and look for other sources of energy to replace it. This means exploring options like electric cars or solar energy to reduce our dependence on traditional fuels.
In simple words: We should create slogans to remind people to save fuel because it is limited and precious. We must use it wisely and look for other energy sources for the future.

🎯 Exam Tip: When asked for slogans, keep them short, impactful, and easy to remember, focusing on key messages like scarcity and responsible use.

Learnt, Understood And Now Tell (Page No. 130)

Question 1. Make a table in your notebook and write the names of different types of fuels and their different uses.
Answer:

🎯 Exam Tip: When creating a table of fuels and their uses, make sure to list common examples for each to show comprehensive understanding.

Question 2. How the coal was formed?
Answer: Coal was formed over many, many years from ancient plants and trees. Long ago, huge earthquakes and other earth movements buried these plants deep underground where there was no air. Over millions of years, the high heat and pressure turned these buried plants into coal. This process shows how fossil fuels are created from organic matter under specific conditions. This type of coal is called bituminous coal or pukka coal. Some people also make a simpler type of coal at home from dried wood, which is called dry charcoal or kachcha coal.
In simple words: Coal formed over millions of years when old plants and trees were buried deep in the ground, and high heat and pressure changed them into rock-like coal.

🎯 Exam Tip: Remember the key factors in coal formation: ancient plants, being buried deep, no air, and high temperature and pressure over a long time.

Question 3. Make two separate list of the vehicles that run using petrol and diesel.
Answer:

🎯 Exam Tip: Try to list a good mix of personal and commercial vehicles for both fuel types to show variety.

Question 4. What measures would you adopt for the conservation of petrol/diesel?
Answer:
(i) To save petrol or diesel, we should use a bus instead of a car for travel. Public transport carries many people at once, reducing the number of individual vehicles on the road.
(ii) We can share a car or motorcycle with others when going to work. Carpooling helps reduce the total fuel used and also eases traffic.
(iii) It is important to turn off the vehicle engine at red lights. Leaving the engine running while waiting wastes fuel unnecessarily.
(iv) Using battery-operated vehicles is a great way to save fuel. Electric vehicles do not use petrol or diesel, making them more environmentally friendly.
(v) Using CNG (Compressed Natural Gas) cars is another good option. CNG is a cleaner and often cheaper fuel than petrol or diesel.
In simple words: To save petrol and diesel, we should use buses, carpool, turn off engines at red lights, and use electric or CNG vehicles.

🎯 Exam Tip: When suggesting conservation measures, include a mix of personal habits, public transport, and alternative fuel options.

Question 1. If n is a natural number, then \( 5^{2n} - 1 \) is always divisible by
(a) Cycle
(b) Scooter
(c) Tmck
(d) Motorcycle
Answer: (c) Tmck
In simple words: The vehicle that uses diesel is typically a truck.

🎯 Exam Tip: For vehicle-fuel questions, relate the vehicle type to the common fuel it uses. (Note: "Tmck" is a common typo for "Truck" in OCR.)

Question 2. Petrol is used in this vehicle.
(a) Tractor
(b) 3-wheeler
(c) Bus
(d) Scooter
Answer: (d) Scooter
In simple words: Among the options, a scooter commonly uses petrol as its fuel.

🎯 Exam Tip: Identify vehicles commonly known for running on petrol from the given choices.

Question 3. We get these from petroleum.
(a) Kerosene
(b) Natural gas
(c) Wax
(d) All of the options
Answer: (d) All of the options
In simple words: Kerosene, natural gas, and wax are all products that come from petroleum.

🎯 Exam Tip: Remember that petroleum is refined to produce many different substances, not just petrol and diesel.

Question 4. In which state coal is found?
(a) Madhya Pradesh
(b) Rajasthan
(c) Bihar
(d) All of the options
Answer: (d) All of the options
In simple words: Coal is found in many states in India, including Madhya Pradesh, Rajasthan, and Bihar.

🎯 Exam Tip: Know that major coal reserves are spread across several Indian states, making "All of the options" a likely correct answer if multiple known locations are listed.

Fill In The Blanks:

Question 1. Students of Bhiwadi school were going for a visit to the............. wildlife sanctuary. (Sariska / Kelora)
Answer: Sariska
In simple words: The students from Bhiwadi school were going to visit the Sariska wildlife sanctuary.

🎯 Exam Tip: Pay attention to specific names and places mentioned in the text for fill-in-the-blank questions.

Question 2. Coal which is made from dry wood is called............. coal, (pukka coal / kachcha coal)
Answer: kachcha coal or dry charcoal
In simple words: Coal made from dry wood is called kachcha coal or dry charcoal.

🎯 Exam Tip: Distinguish between naturally formed coal and simpler coal made from wood.

Question 3. ............. is used in the food stalls, (petrol / coal)
Answer: coal
In simple words: Coal is often used in food stalls for cooking or heating.

🎯 Exam Tip: Consider the common fuels used for cooking in public or traditional settings.

Question 4. There is more consumption of............. in bigger vehicles as compared to smaller vehicles.(fuel / water)
Answer: fuel
In simple words: Bigger vehicles use more fuel than smaller vehicles.

🎯 Exam Tip: Understand that larger vehicles typically have bigger engines and require more energy, thus consuming more fuel.

State True Or False:

Question 1. Petrol is found in the Barmer district of Rajasthan state.
Answer: True
In simple words: It is true that petrol is found in the Barmer district, which is located in Rajasthan.

🎯 Exam Tip: Remember specific geographical locations related to resource discovery for true/false questions.

Question 2. Petroleum is found on the surface of the earth.
Answer: False
In simple words: Petroleum is found deep under the earth's surface, not on top of it.

🎯 Exam Tip: Understand that fossil fuels like petroleum are extracted from deep below the ground.

Question 3. Petrol and diesel, both are used in car.
Answer: True
In simple words: Cars can be designed to run on either petrol or diesel.

🎯 Exam Tip: While most cars use one fuel type, remember that different car models are built for different fuels, including both petrol and diesel.

Very Short Answer Type Questions:

Question 1. Write a utilisation of coal?
Answer: Coal is primarily used to produce electricity. It is burned in thermal power plants to heat water, which creates steam to turn turbines. This process is a major source of power generation worldwide.
In simple words: Coal is used to make electricity.

🎯 Exam Tip: Focus on the most significant and widespread use of coal.

Question 2. Where is the purification of petroleum done?
Answer: The purification of petroleum, also known as crude oil, is carried out in special facilities called refineries. In these refineries, crude oil is processed to separate it into different useful products like petrol, diesel, kerosene, and LPG. This complex process makes petroleum usable for various purposes.
In simple words: Petroleum is cleaned and separated into different products in refineries.

🎯 Exam Tip: Remember "refineries" as the key location for petroleum purification.

Question 3. Whose reserves are limited?
Answer: The reserves of fuels like petrol, diesel, and coal are limited. These are fossil fuels, which means they were formed over millions of years and cannot be quickly replaced once used up. Therefore, it is important to conserve them.
In simple words: The amount of fuel (like petrol, diesel, and coal) available on Earth is limited.

🎯 Exam Tip: Understand that "limited reserves" refers to non-renewable resources like fossil fuels.

Question 4. What is the colour of petroleum when it is extracted from below the earth's surface?
Answer: When petroleum is first taken out from deep within the earth, it is a thick liquid with a blackish colour. This unrefined form is known as crude oil. Its dark colour comes from the many organic compounds it contains.
In simple words: Petroleum is a black, thick liquid when it is first taken out of the earth.

🎯 Exam Tip: Remember "black coloured thick liquid" as the description for crude oil.

Question 5. Which fuel is used in the thermal electric power houses for the production of electricity?
Answer: Coal is the main fuel used in thermal electric power houses to generate electricity. These power plants burn coal to produce heat, which then turns water into steam to power turbines. Coal is a widely used fossil fuel for this purpose.
In simple words: Coal is used in power plants to make electricity.

🎯 Exam Tip: Connect "thermal electric power houses" directly to the use of coal for electricity generation.

Question 6. How is the dry charcoal made?
Answer: Dry charcoal is made from dried wood. When wood is heated in a low-oxygen environment, it removes water and other unstable compounds, leaving behind mostly carbon, which is charcoal. This is a traditional method for making a form of fuel.
In simple words: Dry charcoal is made by heating dried wood without much air.

🎯 Exam Tip: Remember that charcoal is produced from wood, typically through a process involving heat.

Question 7. Where does the students of Bhiwadi school go for a visit?
Answer: The students from Bhiwadi school went for a visit to a wildlife sanctuary. Learning about wildlife and nature is an important part of their education. Such visits help students understand ecosystems and conservation efforts.
In simple words: The students of Bhiwadi school visited a wildlife sanctuary.

🎯 Exam Tip: State the specific destination of the visit clearly, as it is a direct recall question.

Question 9. Name one place where petroleum is found in Rajasthan.
Answer: One significant place where petroleum is found in Rajasthan is the Barmer district. Barmer has become a key area for oil and gas exploration and production in the state. This discovery has made Rajasthan an important contributor to India's energy resources.
In simple words: Petroleum is found in the Barmer district of Rajasthan.

🎯 Exam Tip: Clearly name the district in Rajasthan known for petroleum reserves.

Question 10. Where are the coal mines found in Rajasthan?
Answer: In Rajasthan, coal mines are mainly found in areas like Kolayat and Palana. Both of these locations are within the Bikaner district. These mines contribute to the state's energy supply.
In simple words: Coal mines in Rajasthan are located in Kolayat and Palana.

🎯 Exam Tip: List specific towns or regions within Rajasthan where coal mining activities occur.

Short Answer Type Questions:

Question 1. What is bituminous coal or pukka coal?
Answer: Bituminous coal, also known as pukka coal, is a type of coal formed over millions of years. It was created when countless plants and trees were buried deep under the ground due to geological events like earthquakes. This burial happened in conditions with very high temperature and pressure, and no air. Over a long period, these organic materials transformed into this hard, black coal, which is a significant source of energy.
In simple words: Bituminous coal or pukka coal is a hard, black coal formed over millions of years from buried plants under high heat and pressure, without air.

🎯 Exam Tip: Define bituminous coal by explaining its origin (plants), formation conditions (buried, no air, high heat/pressure), and its common name (pukka coal).

Question 2. What is the difference between larger and smaller vehicles on the basis of fuel consumption?
Answer: Larger vehicles, such as buses and trucks, generally use more fuel than smaller vehicles like cars and motorcycles. For example, a car might travel 17 km on one litre of petrol, while a bus might only run 7 km on one litre of diesel. This is because larger vehicles have bigger engines and carry more weight, requiring more energy to move. This difference highlights why public transport, which uses large vehicles efficiently, is important for fuel conservation.
In simple words: Larger vehicles use more fuel to travel the same distance compared to smaller vehicles because they are heavier and have bigger engines.

🎯 Exam Tip: Clearly state that larger vehicles consume more fuel and provide a simple numerical comparison as an example.

Question 3. Is diesel and petrol taken directly from underground to the petrol pump?
Answer: No, diesel and petrol are not taken directly from underground to the petrol pump. Petroleum is first extracted from deep beneath the earth as a black, thick liquid called crude oil. This crude oil then needs to be purified and processed in oil refineries. After this refining process, petrol, diesel, and other petroleum products are separated and then transported to petrol pumps for sale. This shows that crude oil needs significant processing before it becomes usable fuel.
In simple words: No, crude oil is first taken from underground as a thick black liquid, then it is cleaned and separated into petrol and diesel at refineries before going to petrol pumps.

🎯 Exam Tip: Explain the multi-step process: extraction of crude oil, refining, and then distribution, to clarify that it's not a direct transfer.

Question 5. Where is petroleum found in India?
Answer: Petroleum in India is found in several states. Key locations include Maharashtra, Gujarat, Assam, Arunachal Pradesh, and Tamil Nadu. In Rajasthan, petroleum reserves are notably found in the Barmer district. These regions are crucial for India's domestic oil production.
In simple words: Petroleum is found in Indian states like Maharashtra, Gujarat, Assam, Arunachal Pradesh, Tamil Nadu, and in the Barmer district of Rajasthan.

🎯 Exam Tip: List several Indian states known for petroleum reserves, including a specific district if significant.

Question 6. Where are the coal mines located in India?
Answer: Coal mines in India are located in various states across the country. Major coal-producing states include Madhya Pradesh, Chhattisgarh, Orissa (Odisha), West Bengal, Bihar, and Jharkhand. Within Rajasthan, coal mines are found in specific areas like Kolayat and Palana, which are in the Bikaner district. These regions are vital for providing coal for electricity generation and other industrial uses.
In simple words: Coal mines in India are found in states such as Madhya Pradesh, Chhattisgarh, Odisha, West Bengal, Bihar, Jharkhand, and in Kolayat and Palana of Rajasthan.

🎯 Exam Tip: Name several major coal-rich states in India, and include specific locations for Rajasthan.

Question 7. Write the name of the fuels used in the following list: (Model Paper)
Answer:

🎯 Exam Tip: Ensure that the fuel listed for each item is the most common or primary one used.

Question 8. Name 2 fuel energy resources and their founding states in India.
Answer:

🎯 Exam Tip: Provide accurate examples of states for each fuel type.

Essay Type Question:

Question 1. Write the main uses of petroleum derived substances.
Answer:
(i) Kerosene, which is a substance made from petroleum, is widely used in lamps for light. It is a common fuel for illumination, especially in areas without electricity.
(ii) Petroleum is also used in dry cleaners for washing clothes. Specific petroleum-based solvents are effective in cleaning delicate fabrics.
(iii) Vehicles like tractors, aeroplanes, and cars all run on fuels derived from petroleum. These fuels power essential transport and agricultural machinery.
(iv) Certain petroleum products are used as cooking fuels in our kitchens. This provides energy for domestic cooking needs.
(v) Petroleum is crucial for running many different types of machines. Its various derivatives act as lubricants and energy sources for industrial and mechanical equipment.
(vi) Artificial fibres and plastics are important materials obtained from petroleum. These are used to make countless everyday products, from clothing to packaging.
(vii) Petroleum is used to create many different types of synthetic colours. These colours are essential in industries like textiles, paints, and cosmetics.
In simple words: Petroleum is used to make many things like kerosene for lamps, fuels for vehicles and machines, and materials for dry cleaning, cooking, artificial fibres, plastics, and synthetic colours.

🎯 Exam Tip: For an essay question on uses, try to list a wide variety of applications, categorizing them by domestic, industrial, and transportation uses.