[Q.11] Which article of the Indian Constitution deals with the Emergency provisions due to War or External Aggression (National Emergency)?
Article 352 empowers the President to proclaim a National Emergency.
[Q.12] The 'Preamble' of the Indian Constitution was amended by which Constitutional Amendment Act?
The 42nd Constitutional Amendment Act, 1976 added the words 'Socialist', 'Secular', and 'Integrity' to the Preamble.
[Q.13] Which is the longest river in India?
The Ganga is the longest river flowing entirely within India ($\approx 2,525 km)$.
[Q.14] Who was the founder of the Brahmo Samaj in 1828?
Raja Ram Mohan Roy established the Brahmo Sabha (later Brahmo Samaj) in Kolkata in 1828.
[Q.15] What is the functional unit of the human kidney called?
The Nephron is the structural and functional unit of the kidney.