Arrange the following coastal States/UTs in India in decreasing length of their coastline (in km):

(A) Andaman & Nicobar
(B) Tamil Nadu 
(C) Andhra Pradesh
(D) Gujarat

Choose the correct answer from the options given below:

Correct option is A

The correct order of Indian coastal States/UTs in decreasing length of their coastline is:

1. Andaman & Nicobar (A) - 1,962 km
2. Gujarat (D) - 1,600 km
3. Tamil Nadu (B) - 1,076 km
4. Andhra Pradesh  (C) -  972 km

• Andaman & Nicobar Islands (A) has the longest coastline in India (1,962 km) because it consists of multiple scattered islands in the Bay of Bengal.
• Gujarat (D) has the longest mainland coastline (1,600 km) along the Arabian Sea, with major ports like Kandla and Mundra.
• Tamil Nadu (B) ranks third, with a 972 km coastline along the Bay of Bengal, including ports like Visakhapatnam and Krishnapatnam.
• Andhra Pradesh (C) has a coastline of 1,076 km, featuring Chennai and Tuticorin ports.