Which of the following pairs is not correctly matched?

The correct answer is D. Dadri – Bhiwani.

Dadri is a city in Uttar Pradesh, India, while Bhiwani is a city in Haryana, India. These two cities are not in the same state.

A. Pratapgarh – Faridabad: Pratapgarh is a city in Uttar Pradesh, India, while Faridabad is a city in Haryana, India. These two cities are in the same state.
B. Sohna – Gurugram: Sohna is a city in Haryana, India, while Gurugram is a city in Haryana, India. These two cities are in the same state.
C. Pehowa – Kurukshetra: Pehowa is a city in Haryana, India, while Kurukshetra is a city in Haryana, India. These two cities are in the same state.