What is not true about the usefulness of language?

Sociology is a Science because it is:

Socialisation is different from socialism because the later is:

Minorities giving up their ancestral customs and adopting the culture of the majority is known as:

Consider the following statements:
The dangers of ethnocentrism are very grave in India.
Efforts of bringing unity among people of India are defeated because ethnocentrism:
1. Involves a double moral standard-one for in-group and another for out-group.
2. Distorts self and originality of every individual.
3. Makes individuals to look at the culture of out-groups with hatred and even contempt.
Which of these statements are correct?