Questions

A rotating column of air is called as a Tornado which extends from the thunderstorm to the ground.

DOZENS.

If we remove 'S' from it, it is DOZEN which tells that 12.

The address bus is unidirectional because the address information is always given by the micro processoe  to address a memory location of an input / output devices.

Haemophilia is an inherited bleeding disorder where the blood doesn't clot properly. It is caused when blood does not have enough clotting factor.

The main treatment for hemophilia is called replacement therapy. Concentrates of clotting factor VIII (for hemophilia A) or clotting factor IX (for hemophilia B) are slowly dripped or injected into a vein. These infusions help replace the clotting factor that's missing or low.

The micronutrients (or trace minerals): boron (B), chlorine (Cl), manganese (Mn), iron (Fe), zinc (Zn), copper (Cu), molybdenum (Mo), nickel (Ni). and cobalt (Co).

German Chemist, Adolf von Baeyer first synthesized Barbituric Acid in 1864.