Question
When is International Light Day observed annually ?
Solution
To mark the importance of traffic lights this day is observed every year. It was first observed on 5th August 1914.
_________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 —Â
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 -