Discussion
A transparent resinous liquid to give a smooth, hard, glossy finish to a surface and prevent it from atmospheric action is known as :
Answer: A
The liquid described is varnish.
A varnish is a transparent solution of a resin (natural, such as shellac or copal, or synthetic) in a drying oil or solvent. It dries to a hard, smooth, glossy, transparent film that protects the surface beneath, usually wood, from moisture and air, without hiding its grain.
Distemper is an opaque, water-based paint with chalk and glue. A drier is a metallic compound added to paint to speed drying, and the vehicle is the liquid portion of a paint that carries the pigment. Neither drier nor vehicle is a finish in its own right.
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