Match List I with List II and select the correct answer using the code

Match List I with List II and select the correct answer using the code given below the lists :

List IList II
A. Iron oxide1. Glossy finish on wood and steel
B. Varnish2. Colourless shining protective coating on wood
C. Enamel paint3. Exterior and interior brick walls
D. Emulsion paint4. Preparatory coating on steel

Code :

4 1 2 3
3 1 2 4
4 2 1 3
3 2 1 4
This question was previously asked in
UPSC CAPF – 2011
The correct matching is A-4, B-2, C-1, D-3. Iron oxide is often used as a preparatory coating or primer on steel to prevent rust. Varnish is a clear, colourless coating that provides a protective and shining finish, typically on wood. Enamel paint dries to a hard, durable, often glossy finish and is used on surfaces like wood and metal. Emulsion paint is a water-based paint commonly used on interior and exterior walls, including brick walls.
– Iron oxide primers (like red oxide) are widely used for corrosion protection on steel.
– Varnish provides a clear, protective layer, enhancing the natural look of wood.
– Enamel paints are known for their hard, glossy finish and durability on various surfaces.
– Emulsion paints are standard for architectural use on walls.
Different types of paints and coatings are formulated for specific purposes, surfaces, and desired finishes. Primers (like iron oxide based) prepare the surface for the topcoat and improve adhesion and durability. Varnishes are transparent finishes. Enamels provide opaque, durable finishes. Emulsions are typically water-based and dry relatively quickly, making them popular for internal walls.