14. Which city has become the first city in Uttar Pradesh to install vacuum-based sewer system? A.AyodhyaB.AllahabadC.KanpurD.Agra
The city of Taj Mahal, Agra, has become the first city in the country to have vacuum-based sewers. These vacuums will be used in public places.the correct option of this question is option d
