The seasonal reversal of winds is the typical

_________is the process in which acids and bases react to form salts and water.

The element used for making solar cells is

The fuel that is used in modern  submarines is -

The noble gas used in radiotherapy is

The gas used for filling weather  balloons is-

The pH of a neutral solution is — 

The most reactive among the halogens is-

The element used in the manufacture  of safety matches is —

Which metal is extracted from seawater?

The fuel that is used in modern submarines is -