Engineering Questions with Answers - Multiple Choice Questions
Basic Civil Engineering MCQ’s – Characteristics and Ingredients of Paint
1 - Question
What is a vehicle in paint used for?
a) To obscure surface
b) To adhere to surface
c) To provide shine to surface
d) To reduce crack on surface
View Answer
Answer: b
Explanation: Paint consists of two ingredients-a base and a vehicle. Base helps to obscure the surface. A vehicle allows even spreading, binding and adhering to surface.
2 - Question
Paint should provide resistance to:
a) Corrosion
b) Sound
c) Heat
d) Warping
View Answer
Answer: a
Explanation: Paint should resist corrosion and protect the surface over which it is applied.
3 - Question
The base in a paint does not serve the function of:
a) Durability
b) Hard and elastic
c) Protection against UV rays
d) Catalyst
View Answer
Answer: d
Explanation: There are certain components called driers in the paint. They act as catalysts.
4 - Question
Which of the below is the most commonly used base?
a) Red lead
b) Zinc white
c) White lead
d) Oxide of iron
View Answer
Answer: c
Explanation: White lead possess good bulk, it is dense, permanent and water proof. It is a carbonate of lead and forms the base in lead paints.
5 - Question
Lithophone is a base widely used for exterior works.
a) True
b) False
View Answer
Answer: b
Explanation: Lithophone changes colour when exposed to day light. Hence, it is used for interior works of inferior quality.
6 - Question
How does drier act as a catalyst?
a) Releasing oxygen
b) Releasing water
c) Absorbing oxygen
d) Absorbing water
View Answer
Answer: c
Explanation: Drier accelerates the rate of drying of paint film. It absorbs oxygen from the atmosphere and transfers it to a vehicle, which in turn hardens.
7 - Question
Which of the below vehicles are used for ordinary work?
a) Nut oil
b) Poppy oil
c) Stand oil
d) Linseed oil
View Answer
Answer: a
Explanation: Nut oil is colourless and it dries rapidly. It is cheap as it is prepared from ordinary walnuts. Hence, these are used for ordinary works.
8 - Question
When should drier be added to the paint?
a) 12 hours before paint is used
b) Immediately after opening it
c) 1 hour before paint is used
d) When paint is ready to use
View Answer
Answer: d
Explanation: Driers when added to paint, will start doing their action as a catalyst immediately. This will lead to hardening of paint, decreasing workability.
9 - Question
________ Oil is thicker and darker than raw oil, which is used as vehicle?
a) Double boiled linseed oil
b) Boiled linseed oil
c) Pale boiled linseed oil
d) Linseed oil
View Answer
Answer: b
Explanation: Raw linseed oil is thin and pale. It requires more time to dry. Boiled linseed oil is thicker and darker than raw oil and dries quickly.
10 - Question
Which of the below is a characteristic of an ideal paint?
a) Health of the worker is unaffected
b) Costly
c) Pleasant smell
d) Dries rapidly
View Answer
Answer: a
Explanation: The person applying the paint should be safeguarded from any toxic or harmful ingredients. The paint should economic, the smell is typically bit pungent. Paint should dry at a reasonable time, not slowly or rapidly.
11 - Question
_________ base is generally used for priming coat to new wood work?
a) Antimony white
b) Titanium dioxide
c) Aluminium powder
d) Red lead
View Answer
Answer: c
Explanation: Aluminium powder forms bulk of aluminium paints. It prevents warping and cracking of wood when applied to a new wood work.