Words given on the left side of (::) are related with each other by some logic/rule/relation. Select the missing word/word pair on the right side of (::) from the given alternatives based on the same logic/rule/relation.
Gujarat : Gandhinagar : : Rajasthan : ?

Gujarat : Gandhinagar : : Rajasthan : ?

​Logic: State and its Capital.  ​

Gujarat → Gandhinagar (Capital of Gujarat)

Rajasthan → Jaipur (Capital of Rajasthan)

Option a: Jodhpur
Not the capital of Rajasthan.

Option b: Jaipur
Jaipur is the capital city of Rajasthan.

Option c: Chandigarh
Capital of Haryana and Punjab, not Rajasthan.

Option d: Udaipur
A major city, but not the capital.

Thus, correct option is (b).