This set of Construction and Building Materials Multiple Choice Questions & Answers (MCQs) focuses on “Types of Paints”.
1. _____________________ substances accelerate the process of drying.
a) Solvent
b) Distemper
c) Drier
d) Base
View Answer
Explanation: A drier absorbs oxygen from the air and transfer it to the linseed oil, which in turn, gets hardened. They may be either in the form of soluble driers or paste driers.
2. ___________________ is the most reactive of drier metals and is generally regarded as a surface drier.
a) Litharge
b) Cobalt
c) Red lead
d) Magnesium
View Answer
Explanation: Cobalt is widely used as the only additive in thin film paint formulations. Lead is less reactive than Cobalt has increasing restrictions in its application because of ecological requirements. Numerous of other metals, including cerium and vanadium, have been used occasionally and are effective driers.
3. The sulphate of _________________ is used with zinc paint so as to eliminate the risk of discoloration of a lead drier.
a) Manganese
b) Magnesium
c) Potassium
d) Calcium
View Answer
Explanation: It is required to take extreme care in mixing sulphate of Manganese. Otherwise, the spots will be formed on the painted surfaces.
4. The function of _______________ is to make the paint thin so that it can be easily applied on the surface.
a) Pigment
b) Solvent
c) Carrier
d) Base
View Answer
Explanation: Solvent also helps the paint in penetrating through the porous surfaces. The most commonly used is the spirit of turpentine. When it is desired to have a different colour than the base of a paint, colouring pigment is to be added. The pigments are available in the form of fine powders in various colours and qualities.
5. The __________________ is inflammable, evaporates rapidly and dries the oil consequently.
a) Distemper
b) Turpentine
c) Linseed oil
d) Litharge
View Answer
Explanation: The use of a Turpentine in Paint reduces the protective value of the coating, flattens colours and lessons the gloss of the linseed oil as the spirit evaporates leaving an excess of colour not mixing with the oil.
6. The _______________ is a transparent volatile liquid and it is obtained by distilling the resinous exudation of some varieties of Pine trees.
a) Turpentine
b) Litharge
c) Red lead
d) Manganese
View Answer
Explanation: Turpentine has a pungent order and it often adulterate with mineral oils and some of them have higher penetration values but are otherwise inferior. The benzene and naphtha are used as a substitute.
7. __________________________ is suspended in either quick drying spirit varnish or slow drying oil varnish as per requirement.
a) Aluminium paint
b) Anti-corrosive paint
c) Asbestos paint
d) Cellulose paint
View Answer
Explanation: In Aluminium paint, the spirit or oil evaporates and a thin metallic film of Aluminium is formed on the surface. The advantages of an aluminium paint are: it is visible in darkness and it resists heat to a certain degree. The surfaces of iron and steel are better protected from corrosion by this paint than any other paint.
8. ______________________ essentially consist of oil and stronger drier.
a) Asbestos paint
b) Cellulose paint
c) Cement paint
d) Anti-corrosive paint
View Answer
Explanation: A pigment such as chromium oxide or lead or red lead or zinc chrome is taken and after mixing it with some quantity of very fine sand, it is added to the anti corrosive paint. The advantages of anti corrosive paint are: it is cheap and it last for long duration.
9. _______________ is prepared by dissolving Asphalt or mineral pitches or Vegetable bitumen in any type of oil or Petroleum.
a) Bituminous paint
b) Asbestos paint
c) Cement paint
d) Colloidal paint
View Answer
Explanation: A variety of bituminous paint is available. The paint presents a black appearance and it is used for painting iron work underwater. Whereas, Asbestos is a peculiar type of paint and it is applied on the surfaces which are exposed to the acidic gases and steam.
10. __________________ is prepared from nitro cotton, celluloid sheets, photographic films, etc.
a) Colloidal paint
b) Emulsion paint
c) Cellulose paint
d) Enamel paint
View Answer
Explanation: A cellulose paint hardens by evaporation of cleaning agent. It hardens quickly. It is little more costly, but it presents a flexible, hard and smooth surface. Also, the surface painted with cellulose paint can be washed and easily cleaned.
11. ___________________ consists of white cement, pigment, accelerator and other additives.
a) Colloidal paint
b) Cement paint
c) Emulsion paint
d) Enamel paint
View Answer
Explanation: Cement paint is available in dry powder form. The cement paint is available in a variety of shades and it exhibits excellent decorative appearance. It is waterproof and are likely to become damp after painting. For external finish, on cement plastered walls, it is mixed with water immediately before its application.
12. ______________________ contains binding material such as polyvinyl Acetate, synthetic resins, etc.
a) Colloidal paint
b) Emulsion paint
c) Enamel paint
d) Graphite paint
View Answer
Explanation: Emulsion paint is easy to apply and it drives quickly about 1 to 2 hours. The colour of paint is retained for a long period and the surface of paint is tough and it can be cleaned by washing with water.
13. ____________________ contains white lead, zinc white, oil, Petroleum spirit and resinous matter.
a) Graphite paint
b) Inodorous paint
c) Enamel paint
d) Luminous paint
View Answer
Explanation: Enamel paint dries slowly and forms hard and durable surface. The surfaces provided with this paint is not affected by acids, Alkaline, fumes of gas, hot and cold water, steam, etc. It can be used for both internal and external walls.
14. _____________________ contains calcium sulphide with varnish.
a) Oil paint
b) Plastic paint
c) Inodorous paint
d) Luminous paint
View Answer
Explanation: The surface on which Luminous paint is applied shines like radium dials of watches after the source of light has been cut off. The paint should be applied on the surfaces which are free from corrosion or any other lead paint.
15. ___________________ contains the necessary variety of plastic and it is available in the market under different trade names.
a) Oil paint
b) Plastic paint
c) Luminous paint
d) Inodorous paint
View Answer
Explanation: The application of plastic paint can be done either by brushing painting or spray painting. This paint possesses pleasing appearance and it is attractive in colour. This paint is widely used for showrooms, auditoriums, etc.
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