The capital city of Haryana is:

Chandigarh
Faridabad
Gurugram
Panipat

The correct answer is Chandigarh.

Chandigarh is the capital city of the Indian state of Haryana. It is a union territory and not a part of any state. It was founded in 1953 by the first Prime Minister of India, Jawaharlal Nehru, as a planned city. The city is known for its architecture, which is a blend of modern and traditional Indian styles. It is also home to a number of important government buildings, including the Haryana Legislative Assembly and the High Court of Haryana.

Faridabad is a city in the Indian state of Haryana. It is located in the National Capital Region (NCR) and is one of the most populous cities in India. Faridabad is a major industrial and commercial center. It is also home to a number of educational institutions, including the University of Delhi and the Indian Institute of Technology Delhi.

Gurugram, formerly known as Gurgaon, is a city in the Indian state of Haryana. It is located in the National Capital Region (NCR) and is one of the most populous cities in India. Gurugram is a major financial and technology hub. It is also home to a number of educational institutions, including the Indian Institute of Management Ahmedabad and the Indian Institute of Technology Delhi.

Panipat is a city in the Indian state of Haryana. It is located on the banks of the Yamuna River. Panipat is known for its historical significance. It was the site of three major battles in Indian history: the First Battle of Panipat (1526), the Second Battle of Panipat (1556), and the Third Battle of Panipat (1761).