Questions

The interval of time between Napoleon's escape from Elba and his abdication after the Battle of Waterloo

Deadlock is a situation where a group of processes are all blocked and none of them can become unblocked until one of the other becomes unblocked. The simplest deadlock is two processes each of which is waiting for a message from the other.

Iron reacts with oxygen in the presence of moisture or water to form a red oxide called rust and the reaction involved is called as Redox reaction.

Cartography is the science which deals with the study and practice of making maps.

The Aortic valve - located between the left ventricle and the aorta

The Mitral valve - located between the left atrium and left ventricle

The Tricuspid valve - located between the right atrium and the right ventricle (and) 

The Pulmonary (pulmonic) valve - located between the right ventricle and the pulmonary artery.

Base jumping is almost always illegal.

The sound is what can you hear but not touch or see.

The sun moves around and in the house, but cannot touch the house.