Question

National emergency has been declared so far
A. Once
B. Twice
C. Thrice
D. Four times

Answer 1

Hint: The State of Emergency India refers to a time of governance under an altered constitutional structure that can be declared by the President of India when, from internal and external sources or financial crises, the consultant community perceives and alerts against serious threats to the country.

Complete answer:
Option A) 0nce - The National emergency was not declared only once.
Option B) Twice - The National emergency was not declared only twice.
Option C) Thrice
The country's national emergency was declared three times:- in 1962, in 1971, at the time of Chinese aggression, during the Indo-Pak war; and in 1975, because of internal disturbances.
Initially, in the beginning, it was necessary to declare a national emergency on the grounds of 'external invasion or war' and 'internal unrest' in all or part of India's territory under Article 352. In India, such an emergency was declared in the 1962 war (China war), 1971 war (Pakistan war), and internal disruption in 1975 (declared by Indira Gandhi).
National Emergency may only be proclaimed based on "External aggression or war," also referred as External Emergency and on the ground of "armed rebellion" also referred to as Internal Emergency, after the 44th Amendment Act 1978. Based on a written proposal from the Cabinet headed by the Prime Minister, can the President declare such an emergency.
Option D) four times
The National emergency has not been declared four times so far.

Thus, option (C) thrice is correct.

Note:Many fundamental rights of Indian people can be suspended during a national emergency. The six freedoms are automatically revoked under the Right to Citizenship. By contrast, according to the original Constitution, the Right to Life and Personal Liberty cannot be suspended. The government agreed to suspend even the right to life and personal liberty by dispensing with Habeas corpus in January 1977, during the emergency declared controversially by Indira Gandhi.