When was the first metro rail started in Bengaluru?
A. 2 Oct 2011
B. 20 Oct 2011
C. 30 Oct 2011
D. 1 Nov 2011

Hint: The mass rapid transit system project was sanctioned on the first of June in 1972. The foundation stone of the metro railway of Kolkata was laid on December 29, 1972. 1984 – Metro railway, Kolkata, India’s first metro was commissioned on the 24th of October.

Complete answer:
Namma Metro is a rapid transit system that serves Bangalore, India. It is also known as Bangalore Metro or Bengaluru Metro. It was the first metro system in South India when it first opened. The metro has stations that are underground, at grade, and elevated. With over 300,000 commuters a day, the system operates on standard-gauge lines.

On October 20, 2011, the Purple Line's first 6.7-kilometer (4.2-mile), 6-station stretch (Reach 1) between Byappanahalli in the east and Mahatma Gandhi Road opened. Namma Metro's first segment was built here. The Namma Metro network is designed, operated, and extended by Bengaluru Metro Rail Corporation Limited, a joint venture between the Government of India and the State Government of Karnataka. Services run between 05:00 and 23:00 daily, with a headway ranging from 4–20 minutes. The trains started out with three coaches, but as demand increased, they were upgraded to six coaches.

Hence, the correct answer is option ‘B’.

Note: Rapid transit, also known as heavy rail, metro, subway, tube, U-Bahn, metropolitan, or underground, is a high-capacity public transportation system found mostly in urban areas. Rapid transit systems, unlike buses or trams, are electric railways that run on a dedicated right-of-way that is not accessible to pedestrians or other vehicles.