Answer: Option A
Explanation : Pygmies are not pastoral nomads. Pygmies are nomadic peoples living in the equatorial rainforests of central Africa, with smaller numbers in south-east Asia. They are characterized by their short height (below 1.5 meters, or 4.5 feet, on average). They prefer their specific ethnic names, such as Baka or Mbuti, rather than the generic “pygmy.”

Answer: Option A
Explanation : Collective Farm of Ukraine is also known as Kolkhoz. Kolkhoz, also spelled kolkoz, or kolkhos, plural kolkhozy, or kolkhozes, abbreviation for Russian kollektivnoye khozyaynstvo, English collective farm, in the former Soviet Union, a cooperative agricultural enterprise operated on state-owned land by peasants from a number of households who belonged to the collective and who were paid as salaried employees on the basis of quality and quantity of labour contributed.

Answer: Option B
Explanation : Nautical mile is a unit of distance used in Navigation. A nautical mile is a unit of measurement used on water by sailors and/or navigators in shipping and aviation. It is the average length of one minute of one degree along a great circle of the Earth. One nautical mile corresponds to one minute of latitude.

Answer: Option D
Explanation : The age of a tree can be estimated by The number of concentric rings on a cross-section of its trunk. A tree’s age can be determined by counting the annual growth rings in its trunk. Each ring represents one year, and the ring’s thickness reveals the relative amount of rainfall that year.

Answer: Option D
Explanation : Tin Bigha Corridor is a strip of land in West Bengal on Indian border which was leased to Bangladesh in 2011 so as to provide it access to its Dahagram-Angarpota enclaves.

Answer: Option D
Explanation : Pretoria is the administrative capital of South Africa. Pretoria, city in Gauteng province and administrative capital of the Republic of South Africa. Pretoria stretches along both sides of the Apies River and extends into the western foothills of the Magaliesberg on the east.

Answer: Option A
Explanation : Ionosphere reflects radio waves back to the Earth. The low-frequency end of the window is limited by signals being reflected by the ionosphere back into space, while the upper limit is caused by absorption of the radio waves by water vapor and carbon dioxide in the atmosphere. The ionized part of the Earth’s atmosphere is known as the ionosphere.

Answer: Option B
Explanation : A country lying within the Arctic Circle having geysers is Iceland. The mainland of Iceland is just a few degrees south of the Arctic Circle (66°30’N). The Arctic Circle does however pass through Grímsey island, which lies 40 kilometres (25 mi) off the north coast of Iceland.

Answer: Option B
Explanation : Verkhoyansk in Russia is known as “the cold pole” of the world. Verkhoyansk is the iciest city on the globe — having once measured minus 67.8 degrees Celsius. It’s now trying to use the frigid record to attract tourists.

Answer: Option D
Explanation : The internationally recognised scale for describing wind speeds is The Beaufort Scale. Beaufort scale, in full Beaufort wind force scale, scale devised in 1805 by Commander (later Admiral and Knight Commander of the Bath) Francis Beaufort of the British navy for observing and classifying wind force at sea.