The Ramsar Convention is concerned with the conservation of

The correct answer is C, Union Carbide. On the night of 2 and 3 December 1984, methyl isocyanate gas leaked from the pesticide plant of Union Carbide India Limited at Bhopal in Madhya Pradesh, killing thousands of people and injuring many more. The disaster directly led Parliament to pass the Environment (Protection) Act in 1986 and later the Public Liability Insurance Act of 1991.

Option A, Exide, is a battery manufacturer and had no plant involved in the leak. Option B, Bharat Rasayan Limited, is an agrochemical company but is unconnected with Bhopal. Option D, UPL Limited, is another agrochemical firm and is likewise unrelated to the tragedy. For the examination, remember the chain: Union Carbide, methyl isocyanate, Bhopal, December 1984, and the Environment (Protection) Act of 1986 that followed it.

The correct answer is B, IUCN, the International Union for Conservation of Nature. Founded in 1948 and based in Switzerland, it maintains the Red List of Threatened Species, which grades species as least concern, near threatened, vulnerable, endangered, critically endangered, extinct in the wild or extinct. It is the standard reference used by governments and by examiners.

Option A, the United Nations Organisation, is the parent body of many agencies but does not itself compile the list; its environment arm, the United Nations Environment Programme, works with IUCN rather than replacing it. Option C, the World Health Organisation, deals with human health and disease. Option D, the World Wide Fund for Nature, is a conservation organisation known for its panda emblem and for the Living Planet Report, and it is the commonest wrong choice here because it works in the same field, but the Red List belongs to IUCN.

The correct answer is B, 2001. The Stockholm Convention was adopted in 2001 and came into force in 2004. It aims to eliminate or restrict persistent organic pollutants, chemicals such as some pesticides and industrial compounds that resist breaking down, travel long distances, accumulate in fatty tissue and harm human health; the original list was known as the dirty dozen. India is a party to the convention.

Option A, 2000, is the year of the Cartagena Protocol on biosafety, made under the Convention on Biological Diversity, and is easy to confuse. Option C, 1998, is the year of the Rotterdam Convention on prior informed consent for hazardous chemicals in trade, which is a related but separate treaty. Option D, 1999, has no major chemical convention attached to it. The chemical trio worth memorising is Basel in 1989 on hazardous waste, Rotterdam in 1998 on trade in chemicals, and Stockholm in 2001 on persistent organic pollutants.

The correct answer is D, 2019. The National Clean Air Programme was launched by the Ministry of Environment, Forest and Climate Change in January 2019 as a national framework to cut particulate pollution in cities that do not meet the national ambient air quality standards. It works city by city, through action plans prepared with the State Pollution Control Boards and monitored by the Central Pollution Control Board.

Option A, 2018, is the year the draft of the programme was put out for comments, which is why it is the most tempting wrong answer. Option B, 2017, predates the proposal altogether. Option C, 2020, is later than the launch and is sometimes confused with the creation of the Commission for Air Quality Management for the national capital region, which came afterwards. Remember 2019 for the programme, and remember that its legal backing comes from the Air Act of 1981 and the Environment (Protection) Act of 1986.

The correct answer is C, 1986. The Act was passed in the wake of the Bhopal gas tragedy and gives the central government a general power to take any measure it considers necessary to protect and improve the quality of the environment. Because so many rules are framed under it, on hazardous waste, noise, plastic waste, electronic waste and environmental impact assessment, it is called an umbrella legislation.

Option A, 1974, is the year of the Water (Prevention and Control of Pollution) Act, which created the pollution control boards. Option B, 1981, is the year of the Air (Prevention and Control of Pollution) Act, which extended the work of those boards to air quality. Option D, 1991, is the year of the Public Liability Insurance Act, which requires industries handling hazardous substances to carry insurance for accident victims. The trap in this question is to answer 1984, the year of the accident rather than of the Act.