Jantar Mantar, a famous collection of astronomical instruments at Jaipur, lies in which Indian state?

Introduction / Context:
Jantar Mantar is the name given to a set of historical astronomical observatories built by Maharaja Jai Singh II in the eighteenth century. The best known of these observatories is located in Jaipur and is a UNESCO World Heritage Site. This question asks you to identify the state in which the Jaipur Jantar Mantar is situated, linking astronomy with Indian geography and heritage.

Given Data / Assumptions:

• The question refers specifically to Jantar Mantar at Jaipur. • Jaipur is a famous city in north western India. • We are asked to choose the state that contains Jaipur and therefore this Jantar Mantar.

Concept / Approach:
Jaipur is widely known as the capital city of Rajasthan and is nicknamed the Pink City. The Jantar Mantar in Jaipur consists of large masonry instruments designed to observe celestial bodies and measure time, and it is one of the major tourist attractions of Rajasthan. Therefore, to answer the question, you simply need to know that Jaipur is in Rajasthan and then select Rajasthan from the list of states provided.

Step-by-Step Solution:
Step 1: Identify that the Jantar Mantar mentioned is at Jaipur, not any other city. Step 2: Recall that Jaipur is the capital of Rajasthan, a large state in north western India. Step 3: Match Jaipur with Rajasthan as its state. Step 4: Check the options. Rajasthan appears as one of the choices, while the others are Gujarat, Bihar, Assam and Madhya Pradesh. Step 5: Since Jaipur is clearly in Rajasthan, choose Rajasthan as the correct answer.

Verification / Alternative check:
Tourism information and school textbooks describe Jantar Mantar at Jaipur as part of Rajasthan cultural and architectural heritage. When you see photographs of the pink city, they frequently show instruments from the Jantar Mantar complex. The state name mentioned in such contexts is always Rajasthan. This repeated association confirms that Rajasthan is the correct state for the Jantar Mantar at Jaipur.

Why Other Options Are Wrong:
Gujarat: Has major cities like Ahmedabad and Surat, but Jaipur and the Jantar Mantar in question are not in this state. Bihar: Eastern Indian state with cities like Patna, but Jaipur is not located here. Assam: A north eastern state with its own landmarks in Guwahati and other towns, not related to Jantar Mantar at Jaipur. Madhya Pradesh: Central Indian state with cities such as Bhopal and Indore, but Jaipur belongs to the neighbouring state of Rajasthan.

Common Pitfalls:
Some learners remember that there is also a Jantar Mantar in Delhi and can become briefly confused between Delhi and Jaipur. However, this question clearly mentions Jaipur, so the focus should be on its state, which is Rajasthan. To avoid such confusion, always pay close attention to the city name specified in the question and then recall its state, rather than relying on partial memories.

Final Answer:
Jantar Mantar at Jaipur is located in the state of Rajasthan.