What kind of emergency in India has been imposed for maximum times?

Recommendations of first Finance Commission covered which of the following periods?

Consider the following:

1. A common parliament
2. Central bank
3. Court of justice

Which among the above is/ are features of the African Union?

In which of the following committees, all the members are from Lok Sabha only?

1. Committees on Estimates
2. Public Accounts Committee
3. Committee on Public Undertakings

Select the correct option from the codes given below:  

Consider the following statements about President of India:

1. The prime minister and other ministers hold the office during the pleasure of president
2. President is responsible to establish an interstate council
3. President has been empowered by Parliament to include or exclude castes from the list of Scheduled Castes

Which of the above statements is/are correct?