Q. Which of the following monuments is the oldest?
Answer: Ajanta Caves
Notes: The Ajanta Caves in Aurangabad district of Maharashtra are about 30 rock-cut Buddhist cave monuments which date from the 2nd century BC to about 480 or 650 A.D. Most Khajuraho temples were built between 950 and 1050 A.D by the Rajput Chandela dynasty. The Qutb Minar was built in the 13th century A.D, while the Taj Mahal was built in the 17th century.