Who discovered insulin?

The method of protecting iron from rusting, by coating a thin layer of Zinc is called:

With whom does the turbine run at the hydroelectric power station.

________ is a non-enzymatic reaction between glucose and dissolving sugars such as proteins, lipids, or nucleic acids.

Which instrument is used to record Atmospheric pressure?

Wrist bones are known as? 

What are the main colors in photography?

Who had given the theory of Plate tectonics?