Tag: science & technology

Diamond is the purest natural form of carbon, with atoms arranged in a perfect tetrahedral crystal lattice structure. While graphite is also pure carbon, diamond has a more compact and perfect arrangement. Coal and carbon black contain significant impurities and are not pure carbon.

Cape Horn is the southernmost tip of South America, located in the Chilean archipelago. It's famous for its treacherous waters and is a major milestone for sailors rounding the continent. The Cape of Good Hope is in South Africa, while Cape Samoa doesn't exist as a major geographic feature.

Dodoma has been the official capital of Tanzania since 1974, though Dar-es-Salaam remains the largest city and former capital. Zanzibar is a semi-autonomous region, and Arusha is a major city but not the capital. The move to Dodoma was part of a plan to create a more centrally located capital.

The Murray River is Australia's longest river at approximately 2,508 km, flowing through New South Wales, Victoria, and South Australia. The Darling is a major tributary but shorter alone. The Murrumbidgee is also significant but not as long as the Murray.

Neptune is the odd one out because it's an outer solar system ice giant, while Earth, Mars, and Venus are all terrestrial (rocky) planets in the inner solar system. Neptune's composition, size, and distance from the sun make it fundamentally different from the other three.

Cuba's principal agricultural product has historically been sugarcane, not tobacco. While tobacco is indeed famous (Cuban cigars are world-renowned) and economically important, sugarcane has been Cuba's dominant crop and the backbone of its agricultural economy for centuries. The statement is therefore false.

The Asian Giant Hornet (Vespa mandarinia), commonly called the Japanese Giant Hornet, is indeed the largest hornet species in the world. Native to East Asia, these hornets can grow up to 5 cm in length. The other countries listed (China, North Korea, South Korea) also have populations, but 'Japanese Giant Hornet' is the specific common name referenced.

Neptune takes approximately 165 Earth years to complete one orbit around the Sun. Mars takes about 687 Earth days (1.88 years). Earth takes 1 year. Pluto takes about 248 Earth years. Neptune is the correct answer.