Correct Answer : potassium-40
Correct Answer : Bio-genesis
Correct Answer : UO2
Correct Answer : Zinc
The process of applying a coating of zinc (Zn) on iron or steel to protect it from rusting is called galvanising or galvanizing iron.Zinc is also called sacrificial anode. The process is called cathodic protection. If zinc is scratched or corroded, it will continue to protect the iron from oxidation electrochemically. Tin also protects iron from rusting. But when it is worn away, it accelerates rusting instead of protecting it.
Correct Answer : All of the above
Wireless transmission can be done via any of the Infrared waves, Radio waves or Microwaves.
Correct Answer : Distillation
Correct Answer : 1.8288
Correct Answer : Advection
Convection transfers heat vertically into the atmosphere. In order for heat to be transferred to other regions, it must be transferred horizontally by the wind. The horizontal transfer of heat by the wind is called advection. Advection is a transport mechanism of a substance or conserved property by a fluid due to the fluid’s bulk motion. An example of advection is the transport of pollutants or silt in a river by bulk water flow downstream.
Correct Answer : Talc
Cosmetic powders are prepared from Talc. Face powder is a cosmetic powder applied to the face to set a foundation after application. It can also be reapplied throughout the day to minimize shininess caused by oily skin. There is translucent sheer powder, and there is pigmented powder.
Correct Answer : Attraction of the Moon
Gravity is one major force that creates tides. In 1687, Sir Isaac Newton explained that ocean tides result from the gravitational attraction of the sun and moon on the oceans of the earth (Sumich, J.L., 1996).
