Indian Polity · Polity

Consider the following statements regarding Emergency Provisions in India: 1. According to Article 356, the Government can declare a state of emergency on grounds of external threat only. 2. Once an emergency under Article 352 is proclaimed, the federal distribution of powers remains practically suspended and all powers are concentrated in the hands of the Union Government. 3. The 42nd Amendment Act was passed during the National Emergency. 4. Among the various changes made by the 42nd Amendment, one was that the normal duration of the Lok Sabha and State Legislative Assemblies was extended from 5 to 6 years. Which of the statements given above are correct?