Solution:According to the Census 1991, Jammu and Kashmir had a population density of 77 persons per sq. km, which was less than the remaining three States given in the options. According to Census 2011, the ascending order of the population density of the given States are as follows: Jammu and Kashmir (124), Rajasthan (200), Kerala (860) and Bihar (1106).State level Patterns in India
For the sake of convenience, the spatial distribution of population density is classified into following categories
1. Areas of Extremely low density
∗ Areas having 100 person/sq.km and less, are included in this category
∗ The states and UT under this category, along with the factors are as below:
| Factor determining Density | State/UT |
| Remote and inaccessible | Arunachal Pradesh(17) |
| Mountainous area | Sikkim(86) |
| Situated away from mainland | Andaman and Nicobar(46) |
2. Areas of low density
∗ Areas having population density of 101-250 persons per sq.km are included in this class
∗ The states and UT under this category, along with the factors are as below:
| Factor determining Density | State/UT |
| Mountainous area & forests | Meghalaya(132), Nagaland(119), Manipur(122) |
| Dry and cold areas | erstwhile state of Jammu and Kashmir(124) |
| Very little level land | Himachal Pradesh(123), Uttarakhand(189) |
| Desert region | Rajasthan(201) |
| Rugged topography | Chhattisgarh(189) and Madhya Pradesh(236) |
3. Areas of Moderate Density
∗ This class includes those areas having 251-500 people/sq.km
∗ The states and UT under this category, along with the factors are as below: