The hydrological cycle is a conceptual model that describes
Options: the storage of water between biosphere, hydrosphere, atmosphere and lithosphere, the movement of water between biosphere, atmosphere, lithosphere and hydrosphere, both (a) and (b), None of the above
Options: to test the performance of an indigenously built heat-shield, to hit target without the help of the Air Forces, to defend a large installations like oil-fields etc. against enemy attacks, None of the above
Sound produced at a point is heard by a person after 5 second, while the same sound is heard by another person after 6 seconds. If the speed of sound is 300 m/s, what could be the maximum and minimum distances between the two persons?
Options: 1.8 km, 0.15 km, 2.2 km, 0.20 km, 2.8 km, 0.25 km, 3.3 km, 0.30 km
Options: payment by government for purchase of goods and services, payment made by business enterprises to factors of production, payment made by companies to shareholders, payment made by the government to business enterprises, without buying any goods and services