Answer: A) Masazo Nonaka Explanation: According to Guiness World Records, the world's oldest living man Masazo Nonaka has turned 113 years on 25 July of 2018 in Japan's Hokkaido.     Francisco Nunez Olivera was the former oldest person who died on 29th of January 2018 at the age of 112 years.   Les Colley (1898 - 1998, Australia), is the oldest ever man to father a child. He had his ninth child a son named Oswald to his third wife at the age of 92 years 10 months.

Answer: C) Rajasthan Explanation:

1. Chambal River is a major river flowing in Central India. This river mainly flows in Madhya Pradesh, but some of it also flows in Rajasthan and Uttar Pradesh. Chambal River is a tributary of the Yamuna River.

2. Chambal River originates from Janapav mountain in the Gwalior district of Madhya Pradesh. This river flows northwards and passes through the Chittorgarh, Dholpur and Sawai Madhopur districts of Rajasthan. After this, the river flows through the Dhar, Ujjain, Ratlam, Mandsaur, Bhind and Morena districts of Madhya Pradesh. Finally, this river joins the Yamuna River in the Etawah district of Uttar Pradesh.

3. The length of the Chambal River is approximately 960 kilometers. This river is the biggest tributary of the Yamuna River. The catchment area of the Chambal River is approximately 72,000 square kilometres.

4. Chambal river water is used for irrigation, hydropower generation and water transportation. Four major dams have been built on the Chambal River, including Gandhi Sagar Dam (Madhya Pradesh), Rana Pratap Sagar Dam, Jawahar Sagar Dam and Kota Barrage (Rajasthan). These dams provide water for irrigation and also generate hydroelectricity.