21) Nepal: Kathmandu :: Bhutan: ?
Kathmandu is the capital of Nepal, and Thimphu is the capital of Bhutan.
22) Photoshop: Software :: Keyboard: ?
Photoshop is software, and keyboard is hardware.
23) Rat: Plague :: Dogs: ?
Rats are responsible for Plague, and rabies is caused by dog bites.
24) Duck: Cricket:: Dunk:?
Duck is a term associated with cricket, and dunk is a term associated with basketball; it is a type of basketball shot.
25) Red Fort: Delhi :: Taj Mahal: ?
Red Fort is located in New Delhi, and Taj Mahal is located in Agra.