Top 550+ Solved Building Materials MCQ Questions Answer
Q. Glazing of clay products, is done
a. to improve their appearance
b. to protect them from atmospheric effect
c. to protect them from corrosive action
d. all the above.
Q. Steel contains carbon approximately
a. 1.50% to 5.6%
b. 0.05% to 1.75%
c. 0.25%
d. none to these.
Q. Cast iron contains carbon approximately
a. 1.5% to 5.5%
b. 0.05% to 1.75%
c. 0.250%
d. none to these.
Q. Plastic asphalt is
a. used as a water proofing layer over roof
b. a mixture of cement and asphalt
c. a natural asphalt
d. a refinery product.
Q. Good quality cement contains higher percentage of
a. Tricalcium silicate
b. Di-calcium silicate
c. Tri-calcium aluminate
d. Tetra calcium alumino ferrite
Q. Mild steel is used for
a. structural works in beams, joints and girders
b. small sized water pipes
c. columns and struts
d. none of these.
Q. Gypsum is added in the manufacture of Portland cement
a. while mixing the raw materials
b. during burning in the rotary kiln
c. at the beginning of grinding the clinker
d. at the end of grinding the clinker into powder
Q. The constituent in lime which retard the slaking action and increase the rapidity of setting, is
a. silica
b. sulphate
c. alkalies
d. alumina
Q. For R.C.C. construction, the maximum size of coarse aggregate is limited to
a. 10 mm
b. 15 mm
c. 20 mm
d. 25 mm
Q. Which of the following statement is correct?
a. The fat lime swells two to three times of its original volume during slaking.
b. The poor lime is of pure white colour.
c. The feebly hydraulic lime slakes sluggishly.
d. all of the above
Q. The dolomite bricks are
a. ordinary bricks
b. acid refractory bricks
c. basic refractory bricks
d. neutral refractory bricks
Q. According to Indian standard specifications, the full strength of concrete is achieved after
a. 7 days
b. 14 days
c. 21 days
d. 28 days
Q. Igeous rock has
a. crystalline, glossy or fused texture
b. foliated structure which is hard and durable
c. layers of different composition, colour and structure
d. none of the above