Renewable & Clean Energy

Statement 1 is incorrect: While H-CNG significantly reduces carbon monoxide (CO) emissions, it does not eliminate them entirely. Burning hydrogen produces only water vapor, but since H-CNG is a blend of hydrogen and CNG, some CO is still emitted though at lower levels than conventional CNG. Statement 2 is correct: H-CNG is cleaner than CNG, leading to a reduction in carbon dioxide (CO₂) and hydrocarbon (HC) emissions. The reduction depends on the specific blend ratio and engine efficiency. Statement 3 is correct: As per Indian government guidelines, up to 18% hydrogen (by volume) can be blended with CNG for use in buses and other vehicles. This blend improves combustion efficiency and reduces emissions. Statement 4 is incorrect: H-CNG is not necessarily cheaper than CNG. The cost is influenced by Hydrogen production methods, Infrastructure development and Blending technology. Therefore, option (B) statements 2 and 3 are correct.

Statement 1 is incorrect: India does not feature among the top three global manufacturers of silicon wafers used in photovoltaic (PV) units or solar cells. The top three manufacturers of silicon wafers for PV applications are China, Taiwan, and South Korea. Statement 2 is incorrect: The Solar Energy Corporation of India (SECI) is a government-owned company that facilitates the implementation of solar energy projects in the country, but it does not determine the solar power tariffs. The solar power tariffs in India are determined through a competitive bidding process conducted by various agencies. Hence, the correct answer is option (d) Neither 1 nor 2.

Domestic Content Requirement (DCR) is a policy tool used by governments to encourage local industries to grow and reduce dependence on imports. In the context of solar power production, DCR mandates that a certain percentage of solar equipment used in the production process must be domestically produced. This policy is aimed at promoting indigenous manufacturing and reducing dependence on imports.

Statement 1 is incorrect. The production of algae-based biofuels is not limited to seas only. It can be done on land, saline water, or wastewater. Statement 2 is correct. Setting up and engineering the algae-based biofuel production does require a high level of expertise/technology, which might be a limitation for developing countries. Statement 3 is also correct. Economically viable production of algae-based biofuels does necessitate the setting up of large-scale facilities, which may raise ecological and social concerns.

We can find the Bureau of Energy Efficiency (BEE) Star Label on all of the following options: - Ceiling fans - Electric geysers - Tubular fluorescent lamps The BEE Star Label is a program that promotes energy efficiency in India by labeling appliances and electronic devices based on their energy consumption. Many different categories of appliances are covered under this program

Statement 1 is correct: The International Solar Alliance (ISA) was launched by India and France on November 30, 2015, during the United Nations Climate Change Conference (COP 21) in Paris. The primary aim of ISA is to promote solar energy deployment, reduce dependence on fossil fuels, and support sustainable energy solutions, particularly in developing countries. Statement 2 is incorrect: Initially, ISA was open only to 121 solar-rich countries located between the Tropic of Cancer and the Tropic of Capricorn (the "Sun Belt"), as these regions receive abundant solar radiation throughout the year. *However, in 2018, ISA expanded its membership to include all UN member states, allowing countries beyond the tropics to join and benefit from solar energy initiatives. This change made ISA a more inclusive global platform for promoting solar energy adoption worldwide.*

Net metering (also known as net energy metering) is a solar incentive that allows you to store energy in the electric grid. When your solar panels produce excess power, that energy is sent to the grid and in exchange, you can pull from the grid when your system is under-producing like during night-time.

India is a key participant in the International Thermonuclear Experimental Reactor (ITER), a global nuclear fusion research and engineering megaproject. ITER is set to become the world's largest magnetic confinement plasma physics experiment, aiming to demonstrate the feasibility of fusion as a large-scale, sustainable energy source. India's involvement in ITER provides technological expertise, research collaboration, and industrial capabilities, which can significantly contribute to its future efforts in developing nuclear fusion reactors for commercial power generation. By participating in this international project, India gains access to cutting-edge advancements in fusion technology, potentially paving the way for its own fusion-based energy infrastructure.
Hence, the correct answer is option D.

Statement 1 is correct: When pure hydrogen reacts with oxygen in a fuel cell, the only byproducts are water and heat. This is an advantage of hydrogen fuel cells, making them a clean energy source with minimal emissions. Statement 2 is incorrect: Fuel cells can be used for various applications, including powering small devices like laptops. Portable fuel cells are being developed for this purpose. While currently less common, they hold promise for the future. Statement 3 is incorrect: Fuel cells actually produce electricity in the form of Direct Current (DC). In some applications, an inverter might be needed to convert the DC output to AC for compatibility with the electrical grid. Therefore, the only correct answer is 1 only.

The Indian Renewable Energy Development Agency (IREDA) is a Non-Banking Financial Institution under the administrative control of Ministry of New and Renewable Energy for providing term loans for renewable energy and energy efficiency projects. Statement 1 is correct: IREDA is a Public Limited Government Company established under the Companies Act, 1956.
Statement 2 is correct: IREDA is also registered as a Non-Banking Financial Company (NBFC) with the Reserve Bank of India (RBI).