Q. The longitudinal valleys – duns are part of which of the following Himalayas?
Answer: A
Notes:
Explanation: Kashmir or Northwestern Himalayas comprise a series of ranges such as the Karakoram, Ladakh, Zaskar and Pir Panjal.
- The northeastern part of the Kashmir Himalayas is a cold desert, which lies between the Greater Himalayas and the Karakoram ranges.
- The southernmost part of this region consists of longitudinal valleys known as duns. Jammu dun and Pathankot dun are important examples.
Source: NCERT – Fundamental of Physical Geography

