There are three main types of volcano-composite or strato, shield and dome. Composite Volcanoes. Composite volcanoes, sometimes known as strato volcanoes, are steep sided cones formed from layers of ash and [lava] flows. The eruptions from these volcanoes may be a pyroclastic flow rather than a flow of lava.
A vagal episode or vasovagal response or vasovagal attack (also called neurocardiogenic syncope) is a malaise mediated by the vagus nerve. When it leads to fainting, also known as a syncope, it is called a vasovagal syncope, which is the most common type of fainting.
An acidâalkali reaction is a special case of an acidâbase reaction, where the base used is also an alkali. When an acid reacts with an alkali it forms a metal salt and water. Acidâalkali reactions are also a type of neutralization reaction.n acidâbase reaction is a chemical reaction that occurs between an acid and a base.