In silvery paints, the main constituent present is A. Aluminium powder B. Silver powder C. Lead powder D. White lead

The correct answer is A. Aluminium powder.

Aluminium powder is a fine powder of aluminium metal. It is used in a variety

of applications, including paints, plastics, and cosmetics. In paints, aluminium powder is used to provide a silvery or metallic finish. It is also used to improve the durability of the paint and to reduce the amount of light that is reflected off of the surface.

Silver powder is also used in paints, but it is more expensive than aluminium powder. It is also more difficult to work with, as it is more likely to clump together. Lead powder is no longer used in paints, as it is a toxic substance. White lead is a type of lead pigment that was once commonly used in paints. However, it is also a toxic substance and is no longer used in most paints.

Aluminium powder is the best choice for silvery paints because it is non-toxic, easy to work with, and provides a durable finish.