Non Conventional Energy

Total Questions: 59

1. Which one of the following is a renewable source of energy? [M.P.P.C.S. (Pre) 2016]

(a) Coal
(b) Nuclear energy
(c) Petrol
(d) Solar energy

Correct Answer: (d) Solar energy

Solution:Solar energy is radiant light and heat from the sun that is harnessed using a range of ever-evolving technologies such as solar heating, photovoltaics, solar thermal energy etc. It is an important source of renewable energy and its technologies are broadly characterized as either passive solar or active solar depending on how they capture and distribute solar energy or convert it into solar power.

2. Which one of the following is not a fossil fuel? [M.P.P.C.S. (Pre) 2016]

(a) Coal
(b) Petroleum
(c) Natural gas
(d) Uranium

Correct Answer: (d) Uranium

Solution:Fossil fuels are buried flammable geologic deposits of organic substances such as dead plants and animals that got deposited under several thousand feet of silt. These deposits decayed with the passage of time and got converted to natural gas, coal and petroleum due to the extreme heat and pressure inside the earth's crust. They are also known as non-renewable sources of energy as it takes a very long time for it to replenish.

Fossil fuels are of the following types:

Coal
Petroleum
Natural gas

Fossil fuels are a non-renewable source of energy. Most of the energy used by us is obtained by the burning of fossil fuels. These fossil fuels are used up at a faster rate. They cannot be regrown at a scale compared to their consumption. With the increased demand for the production of various energies, fossil fuel energy is declining. It is difficult to replace them. That is why they are known as a non-renewable source of energy.

3. Non-conventional energy sources are those energy sources, that are- [U.P.P.C.S. (Pre) 2023]

(a) Produced from heat
(b) Produced from electricity
(c) Non-renewable electricity
(d) Renewable

Correct Answer: (d) Renewable

Solution:The term "non-conventional sources of energy" or "renewable resources of energy" refers to natural resources that may constantly provide useable energy over an extended period of time and are still usable even after they have been used up. Solar, wind, hydro, and biomass are some examples of unconventional sources of energy. The Ministry of New and Renewable Energy is planning to construct 500 GW of non-fossil energy capacity by 2030, in keeping with the Prime Minister's promise at COP26. As of October 31, 2022, the nation had deployed a total of 172.72 GW of capacity derived from non-fossil fuel sources. Included in this are 119.09 GW of renewable energy, 46.85 GW of large hydro, and 6.78 GW of nuclear power. As of October 31,2022, this accounted for 42.26% of all installed generating capacity in the nation, or 408.71 GW.

4. An ultimate source of energy stored in fossil fuels is: [U.P.R.O./A.R.O. (Re-Exam) (Pre) 2016]

(a) Earth
(b) Sun
(c) Sea
(d) Moon

Correct Answer: (b) Sun

Solution:Fossil fuels were formed from the dead remains of living organisms. An ultimate source of energy stored in fossil fuels is Sun. Fossil fuels like coal, oil, and natural gas are formed from the remains of ancient plants and animals that captured solar energy through photosynthesis. This stored energy was then converted into chemical energy over millions of years, eventually forming the fossil fuels we use today.

5. The second most important source after fossil fuels contributing to Indian energy need is- [U.P.R.O./A.R.O. (Pre) 2021]

(a) Hydropower energy
(b) Wind energy
(c) Nuclear energy
(d) Solar energy

Correct Answer: (d) Solar energy

Solution:The second most important source after fossil fuels contributing to Indian energy need is solar energy. The solar energy share in total non-fossil fuel is about 12.5 per cent. Hence option(d) is correct.

Hydropower energy: Hydropower uses the energy of flowing water to generate electricity, making it a renewable energy source.

Wind energy: Wind energy harnesses the power of the wind, another renewable energy source.

Solar energy: Solar energy utilizes the sun's radiation to produce electricity, making it a renewable energy source.

6. Which one of the following is NOT an example of biomass energy source? [U.P.P.C.S. (Pre) 2022]

(a) Nuclear energy
(b) Wood
(c) Coal
(d) Gobar (Dung)

Correct Answer: (a) Nuclear energy

Solution:Biomass feedstocks include dedicated energy crops, agricultural crop residues, forestry residues, algae, wood processing residues, municipal waste, and wet waste (crop wastes, forest residues, purpose-grown grasses, woody energy crops, algae, industrial wastes, sorted municipal solid waste [MSW], urban wood waste, and food waste). Nuclear energy is usually considered another non-renewable energy source. The material most often used in nuclear power plants is uranium

7. The Decade of Sustainable Energy for all is the initiative of: [U.P.P.C.S. (Pre) 2017]

(a) United Nations
(b) India
(c) Germany
(d) World Bank

Correct Answer: (a) United Nations

Solution:Renewable energy is a form of energy that is not the cause of pollution nor has its adverse effect on natural resources. Sustainable energy is the seventh goal of the 17 UN Sustainable Development Goals (SDGs), with a call to ensure access to affordable, reliable, sustainable and modern energy for all by 2030. The Sustainable Energy for all initiative, acts in support of the 2014-2024 decade of Sustainable Energy for All as declared by the UN General Assembly.

8. What is meant by energy crisis? [Uttarakhand P.C.S. (Pre) 2006]

(a) Shortage of hydroelectricity.
(b) Malnutrition leading to a short supply of energy in the body.
(c) Shortage of thermal power.
(d) The danger of the extinction of fossil fuel like coal and petrol.

Correct Answer: (d) The danger of the extinction of fossil fuel like coal and petrol.

Solution:The danger of the extinction of fossil fuels like coal and crude oil is called energy crises. Fossil fuels are non-renewable, meaning they are formed over millions of years and cannot be replenished at the rate they are consumed. Once they are depleted, they will be gone. Many economies and industries heavily rely on fossil fuels for energy production, transportation, and various industrial processes. A sudden or significant reduction in fossil fuel availability can disrupt these systems and lead to energy shortages.

The price of fossil fuels can fluctuate significantly based on supply and demand. An energy crisis can lead to higher energy prices, impacting businesses and consumers, potentially causing inflation and economic slowdown. The extraction and burning of fossil fuels contribute to air pollution and climate change. A decline in fossil fuel availability may lead to a search for alternative energy sources, potentially with their own environmental impacts, such as renewable energy projects.

9. Which one of the following is the best source of generating electricity in India from the viewpoint of sustainable development? [U.P.P.C.S.(Pre) 2012]

(a) Coal
(b) Mineral oil and gas
(c) Hydro- electricity
(d) Atomic energy

Correct Answer: (c) Hydro- electricity

Solution:Sustainable development is economic development that is conducted without the depletion of natural resources. Coal, Mineral Oil, gas and atomic energy are natural resources which are limited. Hydroelectricity uses water to produce electricity without depleting water. Hence, Hydro-electricity is the best source to generate electricity for sustainable development.

10. Which of the following renewable power resources had highest installed capacity in the country in 2014? [Chhattisgarh P.C.S. (Pre) 2015]

(a) Biomass power
(b) Solar power
(c) Waste to energy
(d) Wind power
(e) None of the above.

Correct Answer: (d) Wind power

Solution:India's installed renewable energy capacity has increased 396% in the last 8.5 years and stands at more than 180.79 GWGiga Watts (including large Hydro), which is about 42.5% of the country's total capacity (as of Dec. 2023). India saw the highest year on year growth in renewable energy additions of 9.83% in 2022. The installed solar energy capacity has increased by 24.4 times in the last 9 years and stands at 73.31 GW as of Dec., 2023. The installed Renewable energy capacity (including large hydro) has seen an increase of around 128% since 2014.

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