Which one of the following famous monuments in Delhi was not constructed by the Mughal emperor Shah Jahan?

Introduction / Context:
Shah Jahan, the fifth Mughal emperor, is celebrated as one of India's greatest builders, responsible for several magnificent monuments. However, not every famous structure in or around Delhi belongs to his period. This question checks whether you can correctly identify which listed monument was not constructed by Shah Jahan.

Given Data / Assumptions:

• The focus is on prominent monuments associated with Delhi and the Mughal era.
• Shah Jahan's well-known architectural works include major forts, mosques, and palaces.
• We must distinguish monuments of Shah Jahan from those of earlier rulers.
• The options reference various iconic buildings: Red Fort, Taj Mahal, Qutub Minar, and Jama Masjid.

Concept / Approach:
We should recall which monuments were built by Shah Jahan and which predate him. Red Fort and Jama Masjid in Delhi are central to his reign, while the Taj Mahal, though located in Agra, is also Shah Jahan's creation. Qutub Minar, however, predates the Mughal period and belongs to the early Delhi Sultanate era, begun by Qutb-ud-din Aibak and completed by later rulers.

Step-by-Step Solution:
1. Red Fort (Lal Qila) in Delhi was commissioned by Shah Jahan and completed in the mid-seventeenth century as the new Mughal capital, Shahjahanabad.2. The Taj Mahal, though mistakenly tagged with Delhi in the option, is located at Agra and was also constructed by Shah Jahan as a mausoleum for his wife Mumtaz Mahal.3. Jama Masjid in Delhi, one of the largest mosques in India, was constructed under Shah Jahan's patronage.4. Kuthubminar (Qutub Minar) in Delhi was started by Qutb-ud-din Aibak in the late twelfth century and further completed by Iltutmish and others of the Delhi Sultanate, long before the Mughals.5. Thus, among the listed monuments, the one clearly not constructed by Shah Jahan is Qutub Minar, here written as Kuthubminar, Delhi.

Verification / Alternative check:
Architectural histories consistently date Qutub Minar to the early thirteenth century, well before Babur founded the Mughal Empire in India. On the other hand, Shah Jahan's reign (1628–1658 CE) is firmly associated with the Taj Mahal (1630s–1650s), Red Fort (1638 onwards), and Jama Masjid (completed around 1656). This chronological separation leaves no doubt that Qutub Minar was not his work.

Why Other Options Are Wrong:

• Red Fort, Delhi: Constructed by Shah Jahan as part of his new capital at Shahjahanabad.
• Taj Mahal (commonly linked with Delhi but located at Agra): An iconic mausoleum commissioned by Shah Jahan in memory of Mumtaz Mahal, though actually built in Agra, not Delhi.
• Jama Masjid, Delhi: Another major Shah Jahan-era monument, built as a grand congregational mosque.
• None of the above: Incorrect because one monument, Qutub Minar, definitely predates Shah Jahan.

Common Pitfalls:
Students may be distracted by the incorrect mention of 'Tajmahal, Delhi' and assume it must be wrong. While the location tag is inaccurate, the monument itself was indeed built by Shah Jahan. The real test is not geographic correctness but the identity of the builder. The only structure whose construction is historically unrelated to Shah Jahan is Qutub Minar.

Final Answer:
The monument that was not constructed by Shah Jahan is Kuthubminar, Delhi (Qutub Minar).