ANSWER:

UNTOUCHABILITY, in its literal sense, is the practice of ostracising a minority group by segregating them from the mainstream by social custom or legal mandate.

Explanation:

the following practices could be understood to have been associated with Untouchability in India[21]:

..    Prohibition from eating with other members

..    Provision of separate cups in village tea stalls

..    Separate seating arrangements and utensils in restaurants

..    Segregation in seating and food arrangements at village functions and festivals

..    Prohibition from entering places of public worship

..   Prohibition from wearing sandals or holding umbrellas in front of higher caste members

..    Prohibition from entering other caste HOMES

..    Prohibition from using common village paths

..    Separate burial/cremation grounds

..    Prohibition from accessing common/public PROPERTIES and resources (wells, ponds, temples, etc.)

..    Segregation (separate seating area) of children in schools

..    Bonded labour

..    Social boycotts by other castes for refusing to perform their "duties"[22]

HOPE it helps friend :)