Both the statements are correct.
The Nuclear Energy Agency (NEA) is an intergovernmental agency that facilitates co-operation among countries with advanced nuclear technology infrastructures to seek excellence in nuclear safety, technology, science, environment and law.
The NEA is under the framework of the Organisation for Economic Cooperation and Development (OECD).
The NEA’s Mission Statement, as reflected in its Strategic Plan, is: “To assist its member countries in maintaining and further developing, through international co-operation, the scientific, technological and legal bases required for a safe, environmentally sound and economical use of nuclear energy for peaceful purposes. It strives to provide authoritative assessments and to forge common understandings on key issues as input to government decisions on nuclear energy policy and to broader OECD analyses in areas such as energy and the sustainable development of low-carbon economies.”

Statement 1 is correct while statement 2 is incorrect.
The Treaty on the Prohibition of Nuclear Weapons (TPNW), or the Nuclear Weapon Ban Treaty, is the first legally binding international agreement to comprehensively prohibit nuclear weapons, with the goal of leading towards their total elimination.
For those nations that are party to it, the treaty prohibits the development, testing, production, stockpiling, stationing, transfer, use and threat of use of nuclear weapons, as well as assistance and encouragement to the prohibited activities.

All of the above are correct.
Some of the Ramsar sites in India include
• Chilika Lake in Odisha
• Keoladeo National Park in Rajasthan
• Harike Lake in Punjab
• Loktak Lake in Manipur
• Wular Lake in Jammu and Kashmir

Afghanistan is bordered by Pakistan to the east and south, Iran to the west, Turkmenistan, Uzbekistan, and Tajikistan to the north, and China to the northeast.

Statement 1 is incorrect while statement 2 is correct.
Speaker is the constitutional and ceremonial head of the House.
Speaker holds Office from the date of his/her election till immediately before the first meeting of the next Lok Sabha (for 5 years).
Once elected is eligible for re-election. Whenever the Lok Sabha is dissolved, the Speaker does not vacate his office and continues till the newly-elected Lok Sabha meets.