Explanation:

- Indore was named the cleanest city in the 'Swachh Survekshan Survey 2019'.

- Indore has consistently topped the cleanliness charts, frequently winning the title of the cleanest city in India.

- Ujjain was not the winner in 2019, though it's known for its cleanliness efforts in Madhya Pradesh.

- Mysuru was a past winner of the title, particularly in the earlier iterations of the Swachh Survekshan, but not in 2019.

- Surat has also been recognized for its cleanliness initiatives but did not top the 2019 survey.