Advanced Quiz – 12 October 2026 | General Studies

Correct Answer: (d) 1, 2 and 3 only

Explanation:

• Statement 1 is correct: The Petroleum and Natural Gas Regulatory Board (PNGRB) was established under the Petroleum and Natural Gas Regulatory Board Act, 2006. It regulates specified activities involving petroleum, petroleum products and natural gas, including aspects of pipeline transportation and city gas distribution.
• Statement 2 is correct: PNG is natural gas delivered to consumers through pipelines, while CNG is natural gas compressed to high pressure for storage and use, particularly in vehicles. Both commonly consist predominantly of methane.
• Statement 3 is correct: Natural gas is primarily composed of methane (CH₄). When combusted, it generally emits less carbon dioxide per unit of energy than coal. However, methane leakage across the supply chain can significantly affect its overall climate impact.
• Statement 4 is incorrect: India imports substantial quantities of natural gas, including Liquefied Natural Gas (LNG), which may be regasified and supplied through domestic pipeline networks. Consequently, expansion of PNG infrastructure does not automatically eliminate dependence on imported hydrocarbons.

Additional Information:

• The PNGRB was established under the PNGRB Act, 2006, and commenced functioning in 2007.
• City Gas Distribution networks supply PNG to domestic, commercial and industrial consumers and CNG to transport users.
• LNG is natural gas cooled to approximately −162°C to facilitate storage and transportation in liquid form.
• LPG primarily consists of propane and butane, whereas natural gas primarily consists of methane.
• The National PNG Drive 3.0, launched in October 2026, seeks to accelerate domestic PNG connections and improve the utilisation of existing city gas infrastructure.
• Natural gas is a fossil fuel. Its lower combustion-related carbon emissions relative to coal do not make it a zero-emission energy source.

Correct Answer: (c) 1, 2 and 4 only

Explanation:

• Statement 1 is correct: HAPS are aerial platforms that can carry communication or observation payloads. They may include unmanned aircraft, balloons and airships operating at high altitudes.
• Statement 2 is correct: The International Telecommunication Union (ITU) defines a high-altitude platform station as a station located on an object at an altitude of 20–50 km and at a specified, nominal, fixed point relative to Earth.
• Statement 3 is incorrect: HAPS operate within Earth’s atmosphere and are not orbital spacecraft. They may maintain their position through propulsion, aerodynamic control or other station-keeping techniques rather than orbital motion.
• Statement 4 is correct: HAPS can provide persistent observation and communication coverage. However, long-duration operations face engineering challenges involving stratospheric winds, energy storage, payload limitations and environmental conditions.

Additional Information:

• The stratosphere extends approximately from 10–15 km to 50 km above Earth’s surface, with its lower boundary varying by latitude and season.
• HAPS can complement terrestrial communication networks and satellite systems.
• The ITU is a specialised agency of the United Nations dealing with information and communication technologies.
• Geostationary satellites orbit approximately 35,786 km above the equator.
• According to the reported October 2026 trial, DRDO’s lighter-than-air platform reached an altitude of approximately 21 km.
• The platform was developed by the Aerial Delivery Research and Development Establishment (ADRDE), Agra, a DRDO laboratory.

Correct Answer: (b) 1, 3 and 4 only

Explanation:

• Statement 1 is correct: Green hydrogen is generally produced by electrolysing water using renewable electricity. Its lifecycle emissions depend on the electricity source and production process.
• Statement 2 is incorrect: Ammonia has the chemical formula NH₃ and contains no carbon. Consequently, its combustion does not directly produce carbon dioxide from the fuel itself. However, ammonia combustion can produce nitrogen oxides and potentially nitrous oxide, while upstream production emissions depend on the manufacturing pathway.
• Statement 3 is correct: Renewable or e-methanol can be synthesised using renewable hydrogen and captured carbon dioxide. Although methanol releases CO₂ during combustion, its overall climate impact depends on the carbon source, energy inputs and full lifecycle emissions.
• Statement 4 is correct: Shore-to-ship electricity, also called cold ironing or onshore power supply, allows ships to draw electricity from port infrastructure rather than operate auxiliary generators while berthed. The emissions benefit depends partly on how the supplied electricity is generated.

Additional Information:

• Green shipping corridors aim to accelerate the deployment of low-emission or zero-emission maritime technologies along specified shipping routes.
• The India–EU Green Shipping Corridor initiative seeks to promote cleaner maritime fuels, investment and sustainable maritime connectivity.
• The International Maritime Organization (IMO) is a specialised agency of the United Nations responsible for regulating international shipping.
• MARPOL is the principal international convention addressing pollution from ships.
• The Harit Sagar Green Port Guidelines, 2023 promote environmentally sustainable practices at Indian ports.

Correct Answer: (c) 1, 2 and 3 only

Explanation:

• Statement 1 is correct: Under Article 316, the President appoints the Chairman and Members of the UPSC, while the Governor appoints the Chairman and Members of a State Public Service Commission.
• Statement 2 is correct: Article 317 vests the power of removal of Public Service Commission members in the President, including members of State Public Service Commissions. In cases of alleged misbehaviour, removal requires an inquiry and report by the Supreme Court.
• Statement 3 is correct: Article 322 provides that the expenses of the UPSC, including salaries, allowances and pensions payable to its members or staff, are charged upon the Consolidated Fund of India. Charged expenditure may be discussed in Parliament but is not submitted to a vote.
• Statement 4 is incorrect: The UPSC is principally an advisory constitutional body. Its recommendations are not ordinarily binding on the government. Under Article 323, the annual report must be accompanied by a memorandum explaining cases where its advice was not accepted.

Additional Information:

• Articles 315–323 in Part XIV govern Public Service Commissions.
• UPSC members hold office for six years or until attaining 65 years of age, whichever is earlier.
• State Public Service Commission members hold office for six years or until attaining 62 years of age, whichever is earlier.
• Under Article 319, a former UPSC Chairman is ineligible for further employment under the Government of India or any State Government.
• India’s first Public Service Commission was established on 1 October 1926, following recommendations of the Lee Commission.

Correct Answer: (b) 1, 3 and 4 only

Explanation:

• Statement 1 is correct: The World Development Report is a flagship publication of the World Bank, while the World Economic Outlook is published by the International Monetary Fund (IMF).
• Statement 2 is incorrect: The ‘Adopt, Adapt and Advance’ approach does not require developing economies to build frontier AI models before using AI. It recommends adopting existing tools, adapting them to local requirements and selectively advancing domestic capabilities where economically and strategically justified.
• Statement 3 is correct: Digital Public Infrastructure, including interoperable digital identity, payment and data-sharing systems, can support AI applications in governance. However, effective deployment also requires data quality, privacy safeguards and institutional capacity.
• Statement 4 is correct: General-purpose technologies have broad applicability across economic sectors, significant scope for improvement and the capacity to stimulate complementary innovations.

Additional Information:

• The report identifies three important dimensions of AI’s developmental impact: Capabilities, Concentration and Complements.
• AI infrastructure includes computing capacity, reliable electricity, connectivity and quality datasets.
• Small AI refers to relatively compact, specialised AI systems that can operate with lower computational requirements.
• AI diffusion does not automatically translate into equitable productivity gains without investments in human capital and institutional capacity.