Highest, Longest, Biggest, Largest, Deepest, Smallest of the World Questions and Answers

Answer: C

The key takes Tehri dam as the largest dam of India.

Tehri Dam on the Bhagirathi in Uttarakhand, about 260 m high, is the tallest dam in India, and exam books commonly call it the largest. Bhakra Nangal on the Sutlej is a high concrete gravity dam of about 226 m, so it stands second in height.

Hirakud on the Mahanadi is famous as the longest dam, with its dykes running some 25 km, and Damodar Valley is not one dam but a system of dams. The word "largest" is loose (height, length and storage give different answers), and the key follows height, which gives Tehri.

Answer: A

It is Goa.

Goa covers 3,702 km², against Sikkim's 7,096 and Tripura's 10,486. It is also the smallest by population after Sikkim, and became a state only in 1987.

Answer: C

It is the Grand Canal of China.

The Grand Canal runs about 1,776 km from Beijing to Hangzhou, begun in the fifth century BCE and completed under the Sui in 609 CE. The Suez is 193 km and the Panama only 82.

Answer: A

It is the ostrich.

The common ostrich stands up to 2.8 m and weighs up to 150 kg. It cannot fly, but runs at 70 km/h, has the largest eye of any land vertebrate, and has two toes where other birds have three or four.

Answer: B

It is India.

India passed China in 2023 to become the most populous country, at about 1.43 billion. China's population has been falling since 2022, while India's is still growing though its fertility rate is now below replacement.

Answer: D

It is the Hirakud dam.

Built across the Mahanadi in Odisha and completed in 1957, it is about 26 km long counting its earthen dykes - the longest earthen dam in the world. It was one of the first major river valley projects after independence.

Answer: A

It is the Pacific.

The Pacific covers about 165 million km², more than the Atlantic and Indian oceans together and about a third of the earth's surface. It also holds the deepest point, the Challenger Deep at about 11 km.

Answer: D

It is Lake Baikal.

Baikal in Siberia reaches 1,642 m and holds about a fifth of the world's unfrozen fresh water - more than all five Great Lakes together. At around 25 million years it is also the oldest lake in the world.

Answer: C

It is the Nile.

The Nile is conventionally given as 6,650 km from its most distant headstream to the Mediterranean. The Amazon is close behind at about 6,400 and carries far more water; which is longer depends on where each source is taken to begin.

Answer: D

It is Mercury.

Mercury's radius is 2,440 km, smaller than the moons Ganymede and Titan. It became the smallest planet in 2006, when Pluto was reclassified as a dwarf planet.