Renewable & Clean Energy

* Cobalt has emerged as a vital ingredient for the shift to a lower-carbon energy system, but reserves of the metal are concentrated heavily in just a single country. * The Democratic Republic of Congo (DRC) is home to half of the world's known resources and currently accounts for around 70% of global production.  * The metals used in electronic goods, particularly the rechargeable batteries used in electric vehicles and other forms of energy storage means interest in it is growing as the electrification of the global energy system continues to gather pace. * Cobalt is used in batteries, superalloys, catalysts, magnets, and pigments for various industries like electronics, aviation, and manufacturing. * Democratic Republic of Congo (I), Indonesia (II), Russia (III), Australia (IV), and Madagascar (V) are the top 5 Cobalt-producing countries in the world. * Small deposits of Cobalt are known to exist in Odisha & Jharkhand in India. * Cobalt has also been classified as a critical mineral by the Government of India.

* Statement I is Correct : India has domestic uranium reserves, but they are not enough to meet the country's nuclear power generation needs. Additionally, some nuclear reactors in India use imported uranium. Coal remains the dominant source of electricity production in India, although its share is gradually decreasing.  * The major uranium deposits of the country occur in geological basins of the Singhbhum shear zone (Jharkhand), Cuddapah basin (Andhra Pradesh and Telangana), Mahadek basin (Meghalaya), Delhi Supergroup of rocks (Rajasthan) and Bhima basin (Karnataka). * Statement II is Incorrect : Nuclear power plants can utilise uranium enriched to varying degrees. India primarily uses Pressurised Heavy Water Reactors (PHWRs) that can function efficiently with low-enriched uranium (around 2-5% enrichment).

* In March 2020, Sustainable Investments in Infrastructure and Innovation (S3i) was formally established as a stand-alone business unit in the UNOPS governance structure, making UNOPS the first United Nations organisation able to make direct investments from its own balance sheet. * In line with the UNOPS Strategic Plan, 2022-2025, the S3i office will seek to enhance and accelerate the effort of engaging public and private sector investors to work collectively to scale up infrastructure investments and consider co-creating innovative financing options. The UNOPS S3i will continue rolling out the initiative across its three focus-areas- affordable housing- renewable energy- health infrastructure _SK Tip_: _Just think of the option - Rapid Mass Transport. If we generally think, rapid mass transport is not a need or even a necessity while considering sustainable aspects. Had it been mass transport, we would have still given it a thought. But not rapid mass transport._

Statement 1 is incorrect. India's Bhadla Solar Park in Rajasthan is the largest solar power park in the world. Statement 2 is correct. Kerala’s Cochin International Airport Ltd (CIAL) is the first airport in the world that would be running fully on solar power. Statement 3 is incorrect. The largest floating solar photovoltaic project in India is not in Goa but in Ramagundam, Telangana. The project is developed by NTPC (National Thermal Power Corporation Limited).

Statement 1 is incorrect: The oil palm tree (Elaeis guineensis) is native to West Africa, not Southeast Asia. However, Indonesia and Malaysia are now the largest producers of palm oil because the tree was introduced and widely cultivated there due to favorable tropical conditions. Statement 2 is correct: Palm oil and its derivatives (such as palm kernel oil) are widely used in cosmetic and personal care products, including lipsticks, soaps, and perfumes. It acts as a moisturizing agent, emulsifier, and texture enhancer in these products. Statement 3 is correct: Palm oil is a major feedstock for biodiesel production. Palm-based biodiesel (Palm Methyl Ester - PME) is used as a renewable fuel alternative in several countries, including Malaysia, Indonesia, and parts of Europe.

Statement 1 is incorrect. Moringa oleifera, commonly known as the drumstick tree, is a deciduous tree, not an evergreen tree. It sheds its leaves seasonally. Moringa is also a nitrogen-fixing plant, which means it can help restore nutrient balance in the soil by adding nitrogen naturally. Statement 2 is incorrect. Tamarindus indica is not endemic to South Asia. It is native to tropical Africa and later spread to South Asia and other tropical regions. While tamarind is extensively grown in India, it is also widely cultivated in Southeast Asia, Africa, and the Americas. Statement 3 is correct. Tamarind is widely collected as minor forest produce by local communities and forest dwellers in many parts of India, especially in states like Madhya Pradesh, Chhattisgarh, Odisha, and Jharkhand. Statement 4 is correct. India exports tamarind to various countries, especially in Southeast Asia, the Middle East, and Europe. Moringa seeds are also exported due to their high medicinal and industrial value. Statement 5 is correct. Moringa seeds have a high oil content, which can be processed into biodiesel. Tamarind seeds contain hydrocarbons and polysaccharides that can also be explored for biofuel production.

Solar pumps provide a clean, energy-efficient, and sustainable alternative to traditional electric and fuel-driven pump sets. They play a crucial role in environmentally friendly agriculture and can be implemented in both developed and underdeveloped regions. The main components in a solar pumping system include a photovoltaic (PV) array, an electric motor and a pump. Solar water pumping systems are classified as either direct current (DC) or alternating current (AC) systems based on the motors ability. Recently, the concept of brushless DC (BLDC) motors for solar pumping water applications was presented as well. Statement 1 is incorrect: Solar power can be used to run both surface pumps and submersible pumps. The type of pump does not limit the use of solar power. Statement 2 is incorrect: Solar power can be used to run both centrifugal pumps and piston pumps. The type of pump, whether it's a centrifugal pump or a piston pump, does not limit the use of solar power. Hence, both statements 1 and 2 are incorrect.

The question is asking about the raw materials that can be used for the production of biofuels according to India's National Policy on Biofuels. Cassava is a starch-rich root vegetable that can be used to produce biofuel. Damaged wheat grains, which are unfit for human consumption, can also be used to produce biofuel. Groundnut seeds are not mentioned in the National Policy on Biofuels as a raw material for biofuel production. Horse gram is also not mentioned in the National Policy on Biofuels as a raw material for biofuel production. Rotten potatoes, which are unfit for human consumption, can be used to produce biofuel. Sugar beet is a plant whose root contains a high concentration of sucrose and it is grown commercially for sugar production. It can also be used to produce biofuel. Therefore, according to India's National Policy on Biofuels, Cassava, Damaged wheat grains, Rotten potatoes, and Sugar beet can be used as raw materials for the production of biofuels.

IAEA safeguards are a set of technical safeguards applied by the IAEA to independently verify any nuclear facilities to check if it is not misused or deviated from peaceful uses. IAEA Safeguards are meant to understand if imported/enriched uranium is not used for non-peaceful purposes. New reactors under IAEA safeguards The decision will be based on the source of uranium.

* Pyrolysis and plasma gasification are both thermochemical processes used to convert waste materials (organic or inorganic) into usable products. * Pyrolysis: This process involves heating organic materials (like plastic, and biomass) in an oxygen-deficient environment, leading to decomposition into various products like syngas (a mixture of gases), bio-oil, and char. * Plasma gasification: This technology uses high-temperature plasma to break down waste materials into syngas rich in hydrogen and carbon monoxide. * Both processes offer a potential solution for waste management and energy generation. They can convert various waste streams into usable fuels or feedstock for further processing.