The following are the answers to your questions.
A) Who is a foreign national (OCI) of India?
A special facility is given to the Indian people settled abroad and having taken citizenship there, we know these Indians by the name of Overseas Citizen of India. Many countries of the world have the facility of dual citizenship, but according to the Indian Citizenship Act and the law, if an Indian takes the citizenship of another country, he has to give up his Indian citizenship. Presently there has been an increase in the number of people who have taken citizenship of other countries due to many reasons, but still, their feelings and attachment towards their country of origin are the same, for the convenience of such people coming into the country. Overseas Citizen of India card is provided.
B) What is the difference between an OCI and an NRI or a foreign national?
An OCI cardholder is a person who has taken citizenship of another country and is no longer an Indian citizen, the rights of many Indian citizens cannot be given to OCI cardholders. But on the other hand, NRI is a person who is living abroad for some reason, but even today he has citizenship of India and in other countries, he is living with visa facility, NRI person mostly, living abroad So that they can earn their income.
C) What rights were given to him as per Section 7B of the Civil Act, 1955?
It is stated that an Overseas Citizen of India cardholder has the right to appear in some examinations and not in some. They can be appointed on some posts. Some of the fundamental rights given in the constitution, such as rights related to police protection, law aid, untouchability, etc., will also be obtained from them.
D) What changes or restrictions have been brought for the expatriate citizens of India through a new notification issued by the Ministry of Home Affairs (OCI) on 4 March 2021?
Recently, the Central Government has released a list of rights for Overseas Citizen of India cardholders, according to which -
1. These cardholders are free to visit India for a lifetime, they will not be stopped in any way.
2.From now on, the OCI cardholder has permission to adopt a child in the country, purchase or sale of the property concerning agriculture or land, etc. From now on, they will also get the same rights as NRIs concerning businesses.
3.OCI cardholders can now take any exam like All India Service, Public Service, or another entrance exam - NEET,
PSC, JPSC, etc. But they will not be given seat-related reservations.
4.They will not have any restriction on variance in religious places, but they cannot promote any particular religion.