Question

why dalits called as untouchables what problems did they face​

Answer 1

because dalits are people belong to lower caste they could not access to public well bathing ghats restaurants public places etc

Answer 2

Untouchable, also called Dalit, officially Scheduled Caste, formerly Harijan, in traditional Indian society, the former name for any member of a wide range of low-caste Hindu groups and any person outside the caste system. ... The official designation Scheduled Caste is the most common term now used in India.