Consider the following statements:

1. Ritual purity and ritual pollution formed the basis of caste hierarchy.

2. Castes considered ritually pure were generally accorded higher status.

3. Economic and military power were unrelated to caste status.

4. Groups defeated in wars were sometimes assigned low caste status. 

Which of the following statements are correct?

1, 2 and 4 only

The correct answer is Option 2: 1, 2 and 4 only.

The caste hierarchy was theoretically based on distinctions of ritual purity and pollution. Castes considered ritually pure occupied higher positions in the hierarchy. Material power and social status were closely associated, and historians have suggested that groups defeated in wars were often assigned lower caste status.

Statement 1: Ritual purity and ritual pollution formed the basis of caste hierarchy. — Correct. The hierarchical ordering of castes was based on the distinction between purity and pollution.

Statement 2: Castes considered ritually pure were generally accorded higher status. — Correct. Ritual purity was associated with higher social rank.

Statement 3: Economic and military power were unrelated to caste status. — Incorrect. The statement becomes incorrect because of the word "unrelated." Economic and military power were closely associated with social status rather than being unrelated to it.

Statement 4: Groups defeated in wars were sometimes assigned low caste status. — Correct. Historians have argued that defeated groups were often placed in lower caste positions.

NCERT: "The hierarchical ordering of castes is based on the distinction between ‘purity’ and ‘pollution’. This is a division between something believed to be closer to the sacred (thus connoting ritual purity), and something believed to be distant from or opposed to the sacred, therefore considered ritually polluting. Castes that are considered ritually pure have high status, while those considered less pure or impure have low status. As in all societies, material power (i.e., economic or military power) is closely associated with social status, so that those in power tend to be of high status, and vice versa. Historians believe that those who were defeated in wars were often assigned low caste status. ""