Questions

While extracting a float argument using va_arg we should have useed 

c = va_arg (ptr, double)

Market regulation system was introduced by Ala-ud-Din Khilji. He was the second and the most powerful ruler of the Khalji dynasty that ruled the Delhi Sultanate in the Indian subcontinent. 

The Maharana Mewar Award is a Rajasthan State Award.

This award has been instituted to honour work of permanent value to those who consider it their duty, like the Diwan of Shri Eklingji still do, to benefit society through services in the field of education, literature, social services, philanthropy and character building activities.

The British government appointed a commission under the chairmanship of Sir John Simon to report on India's constitutional progress for introducing constitutional reforms as had been promised in 1927.

Cryogenic Engines find applications in Rocket technology. A cryogenic rocket engine is a rocket engine that uses a cryogenic fuel or oxidizer, that is, its fuel or oxidizer are gases liquefied and stored at very low temperatures. Notably, these engines were one of the main factors of NASA's success in reaching the Moon by the Saturn V rocket.