Non-Renewable Energy Questions

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Very Short Answers Questions [1 Mark Questions]

Ques. Which of the following is a non-renewable source of energy?

1. Solar power
2. Hydel power
3. Wind power
4. Fossil fuels

Ans. The correct answer is d. Fossil fuels

Explanation: Solar power, hydel power, and wind power are infinite sources of energy, hence they are categorized as renewable sources of energy. But fossil fuels are a finite source of energy which means it will take a long time to replenish itself, hence it is categorized as a non-renewable source of energy.

Ques. Solar energy is ________ source of energy.

1. Exhaustible
2. Non-renewable
3. Conventional
4. Non-conventional

Ans. The correct answer is d. Non-conventional

Explanation: Solar energy is a non-conventional source of energy. Non-conventional sources of energy are also known as renewable sources of energy.

Ques. Choose the set of non-renewable resources

1. Petroleum, uranium, geothermal energy
2. Uranium, natural gas, soil
3. Shale gas, uranium, soil
4. Natural gas, uranium, phosphates

Ans. The correct answer is d. Natural gas, uranium, phosphates

Explanation: Natural gas, uranium, and phosphates are all non-renewable resources. Natural gas is a fossil fuel, and uranium and phosphates are minerals that are formed over millions of years. They cannot be replenished on a human timescale.

Ques. Which of the following is a fossil fuel?

1. Wood
2. Coal
3. Hydrogen
4. Natural Uranium

Ans. The correct answer is b. Coal

Explanation: Coal is a fossil fuel. It is formed from the remains of ancient forests.

Ques. Which is the theory associated with non-renewable resources?

Ans. The theory associated with non-renewable resources is called Hotelling's theory. It was developed by economist Harold Hotelling in 1931.

Ques. What are the main nuclear power stations in India?

Ans. India has seven major power stations: Narora, Kudankulam, Rawatbhata, Kalpakkam, Kakrapar, Tarapur, and Kaiga.

Ques. What is the contribution of hydropower plants to the total energy requirement of India?

Ans. Hydropower plants provide around 25% of the overall energy requirements of India.

Ques. A non-renewable resource is a finite resource.

1. True
2. False

Ans. The correct answer is a. True

Explanation: A non-renewable resource cannot be replenished after it has been depleted. If we have used it once, we will not be able to reuse or recycle it again. Earth minerals, fossil fuels, and other nonrenewable resources are examples.

Ques. Which of the following nonrenewable energy is not classified as a fossil fuel?

1. Natural gas
2. Petroleum
3. Oil
4. Nuclear

Ans. The correct answer is d. Nuclear

Explanation: Nuclear energy is not considered a fossil fuel. Fossil fuels are made from materials that were once live animals or plants. Because uranium, the fuel used in nuclear power plants, was never a living thing, nuclear energy is not categorized as a fossil fuel.

Ques. Natural gas is a non-renewable energy.

1. True
2. False

Ans. The correct answer is a. True

Explanation: Natural gas is a nonrenewable source of energy. Once converted into energy, it takes millions of years to produce. Natural gas is used as a car fuel. It can be found in deep underground rock and some coal beds.

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Short Answers Questions [2 Marks Questions]

Ques. What is non-renewable energy?

Ans. Non-renewable energy is energy that comes from sources that cannot be replenished on a human timescale. These sources include fossil fuels (coal, oil, and natural gas), nuclear energy, and uranium.

Ques. What is renewable energy?

Ans. Renewable energy is energy derived from renewable resources that are replenished naturally on a human timeline. Sunlight, wind, water movement, and geothermal heat are all examples of renewable resources. Although most renewable energy sources are environmentally friendly, some are not.

Ques. Which are the most commonly used renewable energy sources?

Ans. Renewable energy sources include solar energy, wind energy, hydropower, tidal energy, and geothermal energy.

Ques. What are the main characteristics of fossil fuels?

Ans. Natural energy sources such as crude oil, coal, natural gas, and coal take millions of years to form. It cannot be regenerated at the rate at which they are depleted. As a result, fossil-fuel extraction will become extremely costly forcing us to depend on other energy sources such as wind or solar power.

Ques. What are nuclear fuels?

Ans. Nuclear energy is based on fission reactions of naturally occurring radioactive elements. Uranium is a fission fuel that is widely used. It is a rare element that is mined in only nineteen countries. Plutonium is another well-known example of nuclear fuel.

Ques. What is a thermal power plant?

Ans. Thermal power plants convert heat energy into electricity. They do this by burning fossil fuels, such as coal or oil, to heat up water and produce steam. The steam then drives a turbine, which generates electricity. Transmitting electricity is more efficient than transporting fossil fuels, so thermal power plants are built near coal or oil fields.

Ques. Is natural gas a non-renewable energy?

Ans. Yes, natural gas is a nonrenewable energy source that is abundant in nature. This biological energy source occurs deep beneath the earth's surface, beneath the rocks. Natural gas hotspots can also be found in coal deposits.

Ques. What is a hydropower plant?

Ans. Hydropower plants are facilities that use the kinetic energy of flowing water to generate electricity. They are typically built on dams, which create a reservoir of water behind them. The water in the reservoir flows through the dam and turns into a turbine, which generates electricity.

Ques. Which is the first oil reservoir drilled in Asia?

Ans. The first oil reservoir drilled in Asia was in the Indian state of Assam. In 1889, oil reserves were discovered in the Assam-Arakan Basin (Digboi). This oil refinery is the oldest operating oil well.

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Long Answers Questions [3 Marks Questions]

Ques. What are the different types of non-renewable energy?

Ans. Nonrenewable energy sources mainly include

1. Fossil fuels: Fossil fuels are produced from the remains of ancient plants and animals that decomposed over millions of years.
2. Nuclear fuels: Nuclear fuels are used in nuclear power plants to produce energy through nuclear fission. Uranium, which is found in relatively low amounts in the Earth's crust, is the most commonly used nuclear fuel.

Fossil fuels are categorized into three major types

• Natural gas: Natural gas is a gaseous fossil fuel composed mainly of methane. It is commonly found in association with oil reserves. Natural gas is a versatile energy source that may be used for heating, cooking, power generation, and automobile fuel.
• Coal: Coal is a solid fossil fuel formed by the disintegration of plant material such as trees, plants, and ferns under great pressure and heat over millions of years.
• Oil: Oil is a liquid fossil fuel obtained through the disintegration of small organisms such as zooplankton and algae that have been exposed to extreme pressure over time.

Ques. What is the best renewable energy source?

Ans. Although different types of renewable energy can be used to meet energy demands, the most efficient and dependable renewable energy sources are solar wind, geothermal, biomass, and hydroelectricity. 

• Renewable energy accounts for nearly a tenth of overall energy consumption in the United States (one of the world's major users of total energy). 
• Electricity accounts for around half of this. Biomass accounts for around half of global energy usage. 
• Hydroelectricity accounts for around 26%, while wind power accounts for approximately 18%.
• Statistics show that total renewable energy consumption is still low when compared to non-renewable energy sources due to the nature of accessibility and efficiency of present renewable energy.

Ques. What is the difference between renewable and non-renewable energy resources?

Ans. The following are the differences between renewable and non-renewable energy resources

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Very Long Answers Questions [5 Marks Questions]

Ques. Explain the formation of fossil fuels.

Ans. Non-renewable energy is obtained from sources of energy that will eventually deplete or cannot be supplied even after thousands of years. 

• The most commonly used nonrenewable energy sources are fossil fuels, which include petroleum, natural gas, and coal. 
• Carbon is the primary component of fossil fuels. 
• The Carboniferous Period (approximately 300-360 million years ago) is when fossil fuels first appeared. 
• All fossil fuels were formed in the same way. 
• The world had a distinct landscape long before the dinosaur period. 
• It was densely forested and surrounded by shallow, wide oceans. 
• In those ancient wetlands, algae, plankton, and plants grew. 
• They absorbed sunlight and converted it into energy through photosynthesis. 
• After they died, the organisms settled at the bottom of the lakes or oceans. 
• Even after they died, their bodies were still full of energy. 
• The dead plants and other living organisms were crushed beneath the seafloor over time. 
• Rocks and other deposits are stacked on top of them, creating subsurface pressure and heat. 
• The animal and plant remains were eventually transformed into fossil fuels (petroleum, coal, and natural gas) in this region.

Ques. What are the disadvantages of non-renewable energy?

Ans. The following are the disadvantages of non-renewable energy

• Finite sources of energy: Coal, oil, and natural gas are examples of fossil fuels. They were named "fossils" because they were produced from the remains of ancient plants and animals. The problem with fossil fuels is that they are limited in supply. We are depleting them faster than they can be replenished. Renewable energy sources, such as solar and wind power, on the other hand, are unlimited.
• Pollute the environment: Nonrenewable energy sources contribute significantly to global pollution. When they are burned, they emit toxic compounds into the atmosphere, such as carbon dioxide and sulfur dioxide. These gasses contribute to climate change and respiratory issues. Renewable energy sources do not emit harmful pollutants, hence they are better for the environment.
• Unreliable: Fossil fuels are unreliable and expensive because their prices can fluctuate wildly depending on global market conditions. In contrast, renewable energy sources like solar and wind power are much more stable and affordable in the long term.
• Damage to the Earth: The extraction of fossil fuels from the earth may damage the ecosystem. For example, oil spills may contaminate water sources and harm animals. Coal mining also harms the environment. It can destroy forests and contaminate rivers and streams. Renewable energy sources are less harmful to the environment since they lack these drawbacks.
• Non-biodegradable residual products: Refining is the process of separating the different components of non-renewable fuels and removing impurities. Unfortunately, the leftover materials from this process are non-biodegradable, meaning they can't be broken down by nature. This means they can sit in landfills for years, releasing harmful chemicals into the soil and water.

Ques. What are the advantages of non-renewable energy?

Ans. The following are the advantages of non-renewable energy

• Energy is abundant in non-renewable resources. Coal and oil tend to supply more energy than renewable energy sources such as solar and wind energy.
• Profits from coal mining, oil sales, and natural gas pipeline construction are very high.
• These materials are simple to use, whether at home or elsewhere.
• Consumers can obtain nonrenewable resources at a very low cost.
• For some, new machinery and other energy sources cannot replace traditional fuels such as coal and oil. Therefore, it is also sometimes referred to as traditional energy.
• Nonrenewable energy can be found almost everywhere. This indicates that they can be easily transported throughout the world. Nonrenewable energy can also be used by those who are living in places that are difficult to reach.
• Most importantly, nonrenewable resources provide jobs. Nonrenewable sources of employment include extracting, transporting, and refining.
• Most nonrenewable sources are also quite simple to store.

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