General Knowledge

Explanation: The Indus is called the 'Father of Rivers.'

Explanation: Coca-Cola was originally marketed as a medicine.

Explanation: Richard Nixon resigned while in office.

Explanation: Ablutophobia is the fear of bathing.

Explanation: Hydrogen gas is used to make vanaspati ghee (hydrogenation).

Explanation: The Berlin Wall divided Germany from 1961.

Explanation: The African Union is headquartered in Addis Ababa.

Explanation: Europe has about 44-51 states (per the given key).

Explanation: UN Day is celebrated on 24 October (the UN was founded in 1945).

Explanation: The UN recognizes six official working languages.