General Knowledge

Big Ben is the nickname for the Great Bell of the clock at the north end of the Palace of Westminster in London, commonly extended to refer to both the clock and the clock tower. It is not a galaxy, tower in Tokyo, or a railway engine.

The Mariana Trench is the deepest oceanic trench in the world, with its maximum known depth at approximately 10,994 meters (about 36,070 feet) at the Challenger Deep. This makes option D the correct answer.

Sheikh Saadi (RA) was a renowned Persian poet known for his works in the Persian language, such as Gulistan and Bustan. Although he lived in a region where Arabic was also influential, his primary literary contributions were in Persian.

The name 'United Nations' was suggested by U.S. President Franklin D. Roosevelt during World War II to describe the Allied powers fighting against the Axis. This name was later adopted for the international organization established in 1945.

Rawal Dam is constructed on the Korang River, a tributary of the Soan River, near Islamabad, Pakistan. It was completed in 1962 and serves as a major water reservoir for Islamabad and Rawalpindi. The Korang River is the main inflow and outflow stream of Rawal Dam. The other rivers listed (Indus, Kabul, Chenab) are not related to Rawal Dam. Therefore, the correct answer is A: Korang River.

Helsinki is the capital city of Finland, making option C the correct answer. The other options are capitals of different countries: Warsaw (Poland), Pyongyang (North Korea), and Vienna (Austria).

Al Jazeera is a well-known TV channel headquartered in Qatar, making Qatar the correct answer. It is not owned by Iran, Syria, or Kuwait.

Birmingham was the host city for the Commonwealth Games in 2022, making option B the correct answer. London and Manchester have hosted the Games in the past, but not in 2022.

Nabi Tajima became the oldest living woman in Japan on 27 September 2015, following the death of a 115-year-old anonymous woman. She later became the world's oldest living person in 2017. The date 15 September 2013 mentioned in the original question is incorrect according to verified sources including Wikipedia and Guinness World Records.

Barbara Bush, wife of George H. W. Bush, died on April 17, 2018. Multiple reliable sources including CNN, The Washington Post, BBC, and CBS News confirm the date of her death as April 17, 2018. Therefore, the correct answer is option C (17 April 2018). The original correct_answer was incorrectly given as B (16 April 2018), which is not accurate.