Tag: science & technology

The Arctic Ocean is the smallest at about 14 million sq km, while the next smallest (Indian) is roughly 70 million sq km. It's also the shallowest ocean and centered around the North Pole region.

Nuclear power plants generate energy through fission - splitting heavy uranium atoms into lighter elements, releasing heat. Fusion (combining light atoms) occurs in stars and remains experimental for power generation on Earth.

The Three Mile Island nuclear accident happened in 1979 at the Three Mile Island Nuclear Generating Station near Harrisburg, Pennsylvania, USA. It was the worst nuclear accident in US history.

The IAEA, established in 1957 as a UN agency, has its headquarters in Vienna, Austria. While many international organizations are based in Swiss cities like Geneva, Vienna hosts the IAEA alongside other UN offices.

The Obninsk Nuclear Power Plant in the Soviet Union (USSR) began operations in 1954 as the world's first nuclear power station to generate electricity for a power grid. While the USA had earlier experimental reactors like EBR-1 (1951), Obninsk was the first to regularly supply electricity to a power grid at commercial scale.

The Nuclear Non-Proliferation Treaty (NPT) recognizes only five nuclear weapon states: USA, UK, France, China, and USSR/Russia. India never signed the NPT and therefore does not have the treaty-granted right to possess nuclear weapons, though it did develop them independently later.

The Tropic of Cancer passes through 8 Indian states: Gujarat, Rajasthan, Madhya Pradesh, Chhattisgarh, Jharkhand, West Bengal, Tripura, and Mizoram. It does NOT pass through Assam - it passes just south of Assam's border through Mizoram. While many other states are also not passed by the Tropic of Cancer, Assam is specifically listed among the options and is the correct choice in this context.

Ganga, Godavari, and Mahanadi all flow eastward across India and drain into the Bay of Bengal. Narmada flows westward into the Arabian Sea, making it the only incorrect option.