Top 550+ Solved Building Materials MCQ Questions Answer
Q. The percentage of alumina in a good brick earth lies between
a. 5 to 10 %
b. 20 to 30 %
c. 50 to 60 %
d. 70 to 80 %
Q. Pig iron made from haematite ores free from sulphur, phosphorus and copper, is known as
a. Bessemer pig
b. Grey or foundry pig
c. White or forge pig
d. Mottled pig
Q. Le-Chatelier's device is used for determining the
a. Setting time of cement
b. Soundness of cement
c. Tensile strength of cement
d. Compressive strength of cement
Q. Red short iron cracks when bent due to the presence of
a. Sulphur
b. Carbon
c. Phosphorus
d. Silicon
Q. Percentage of carbon content in mild steel is
a. Less than 0.25
b. Between 0.25 and 0.7
c. Between 0.7 and 1.5
d. Greater than 1.5
Q. The method of addition polymerization is used for obtaining:
a. Polystyrene
b. Polypropylene
c. Polyvinylchloride
d. All of these
Q. Which of the following metamorphic rocks has the most weather resisting characteristics?
a. Marble
b. Quartzite
c. Slate
d. Lime stone
Q. To retard the initial setting time of cement, the compound responsible, is
a. Tri-calcium silicate
b. Gypsum
c. Di-calcium silicate
d. Tri-calcium aluminate
Q. Seasoning of timber is done for
a. Increasing moisture content
b. Decreasing moisture content
c. Increasing strength of timber
d. None to these
Q. The steel used for the manufacture of rails, is
a. Bessemer steel
b. Mild steel
c. Cast steel
d. Stainless steel
Q. Durability of building stone is affected by its
a. Chemical composition
b. Texture
c. Resistance to atmosphere
d. All the above
Q. Pick up the most favourable condition for the rapid growth of fungus for dry rot from thefollowing:
a. Absence of sun light
b. Dampness
c. Presence of sap
d. All the above
Q. Crushing strength of a first class brick should not be less than
a. 3.5 N/mm²
b. 7.0 N/mm²
c. 10.5 N/mm²
d. 14.0 N/mm²
Q. Pick up the correct statement from the following:
a. Rust is due to formation of oxides
b. Cast iron oxidises less
c. Steel oxidises most
d. All the above
Q. The main constituent of cement which is responsible for initial setting of cement is
a. Di-calcium silicate
b. Tri-calcium silicate
c. Tri-calcium aluminate
d. All of the above