Question

Which one of the following groups of Indian states has a common frontier with Bhutan?
A) Assam, Bihar, Sikkim and West Bengal
B) Bihar, Meghalaya, Sikkim and West Bengal
C) Arunachal Pradesh, Assam, Sikkim and West Bengal
D) Arunachal Pradesh, Sikkim, West Bengal and Bihar

Answer 1

Hint: One of these states belongs to east India while the other three states are located in the northeastern region of India. All of these states share international borders with Nepal, Bhutan as well as Bangladesh.

Complete answer:
The Bhutan–India border refers to the international border that separates Bhutan and India. The border is around 699 km (434 m) long, and adjoins the Indian states of Assam (267 km; 166 m) which is a state located in northeastern India, situated south of the eastern Himalayas along the Brahmaputra as well as Barak River valleys.

Secondly, Arunachal Pradesh (217 km; 135 m), which is a state located in Northeast India. It borders the states of Nagaland and Assam towards the south while it shares international borders with Bhutan in the west.

West Bengal (183 km; 114 m), a state in the eastern region of India along the Bay of Bengal. Part of the Bengal region of the Indian subcontinent, it borders Bangladesh towards the east, and Nepal and Bhutan towards the north.

Lastly , Sikkim (32 km; 20 m) which is a state in northeastern India. It borders the Tibet Autonomous Region of China towards the north and northeast, Bhutan towards the east, Nepal towards the west, and West Bengal towards the south. Thus, the states of Arunachal Pradesh, Assam, Sikkim and West Bengal have a common frontier with Bhutan.

Thus the correct answer is option ‘C’.

Note: The Bhutan–India border begins in the west at the western tripoint with China, Tibet, proceeding from there broadly southwards across Mount Giochi and down to the Jaldhaka River. Then utilising this river for a period before turning south-westwards and then east through a series of irregular overland lines which broadly follow the foothills of the Himalayas, specifically Dangme Chhu peak. It then turns towards the north, turns west near Sakteng, briefly utilising the Tawang Chu and Nyamjang Chu, before turning north up to the eastern Chinese tripoint.