Which of the following States of India has the longest coastline ?

1. A

   Maharashtra

   Maharashtra has a substantial Arabian Sea coast but it is shorter than Gujarat’s. This option is not the key.

2. B

   Andhra Pradesh

   Andhra Pradesh has a long Bay of Bengal coastline, among the longest on the east, yet still shorter than Gujarat in standard Survey of India figures used in exams. This option is therefore wrong.

3. C

   Kerala

   Kerala’s coast is important but much shorter than Gujarat or Andhra Pradesh. This option is not the key.

4. D

   Gujarat

   Gujarat has the longest coastline among Indian States, including the Gulf of Kachchh, the Gulf of Khambhat and the Saurashtra shore. This option is the official key.

Summary. Official key is (d) Gujarat. Mainland-plus-gulf indentation gives Gujarat the top State length; Andhra Pradesh leads among east-coast States but not the Union as a whole. Maharashtra and Kerala trail. Island Union Territories are separate from this State list. Only (d) is longest.