Instrument for measuring light intensity is called

The color of the stars is depending on? 

The chemical name of baking soda is

The metallurgical process in which a metal is obtained in a fused state is called

The most commonly used bleaching agent is 

Weight of an object on the moon is ______ the weight of the object on earth.

The color of Tomato is red due the presence of….

Communication satellites are used to -