Q. Which of the following port in India is known as twin dock systems?
Answer: D
Notes:
Kolkata is the only riverine major port in India. Known for twin dock systems viz., Kolkata Dock System (KDS) on the eastern bank and Haldia Dock Complex (HDC) on the western bank of river Hooghly.
Vishakhapatnam is India’s deepest landlocked port handling crude oil and petroleum products.
Source: NCERT – XII India People and Economy

