Solution:
A state in which supreme power is held by people and their elected representatives, and which has an elected head of state is said to be a republic state. India is a republic because in India, President who is 'head of state' is elected for a definite period of time and representatives elected by people are repository of all power.

Solution:
According to the provisions under Article-53(2) President of India is the Supreme Commander in Chief of Defence Forces of Union of India. Defence forces in India include Indian Army, Indian Navy and Indian Air Force.

Solution:
First meeting was presided over by the oldest member of assembly, Dr. Sachidanand Sinha on 9th December, 1946. He was the temporay/interim chairman. Later on, Dr. Rajendra Prasad was elected as the permanent chairman of constituent assembly.

Solution:
The preamble declares India as a sovereign state which implies India is free to conduct her internal as well as external affairs.

Solution:
Lok Sabha is the lower house of Parliament. The maximum number of members of this is 552. The first speaker of Lok Sabha was Mavlanker.

Solution:
As per provisions of Article-75(1), Ministers at Central/Union level are appointed by President on the advice of Prime Minister. And according to Article-75(2), they hold office during the pleasure of President and can be removed anytime by the President without any process and ground.

Solution:
Federal form of government is a structure in which a number of states are in agreement with the another to remain as a group but they each hold the right to secede i.e. withdraw from group. Example- U.S.A.