Top 550+ Solved Building Materials MCQ Questions Answer
Q. Poor or lean lime
a. slakes rapidly with considerable evolution of heat
b. takes very long time to develop adequate strength
c. has high plasticity
d. none of the above
Q. The workability of cement concrete can be improved by
a. increasing the quantity of cement
b. increasing the proportion of coarse aggregate
c. increasing the quantity of sand
d. all of the above
Q. The good clay for making bricks is
a. unweathered clay
b. weathered clay
c. silted soil
d. black cotton soil
Q. The commonly used cement in cement paints is
a. white cement
b. Portland cement
c. alumina cement
d. rapid hardening cement
Q. The most powerful explosive used in blasting is
a. blasting power
b. dynamite
c. gun cotton
d. cordite
Q. The quarrying of stone by the method of wedging is successfully carried out in
a. sandstones
b. limestones
c. marbles
d. all of these
Q. The indentation marks left on bricks during the process of moulding, are known as
a. fillets
b. frogs
c. projections
d. marks
Q. Efflorescence is caused if
a. the alkaline salt is present in the bricks
b. the clay used for making bricks contain pyrite
c. the water used for pugging the clay contains gypsum
d. all of the above
Q. Which of the following is an example of silicious rock?
a. Granite
b. Gneiss
c. Quartzite
d. all of these
Q. During the process of burning limestone, clay forms certain compound which
a. gives hydraulic lime
b. gives power of quick setting
c. does not allow to be dissolved in the outside water when used in damp situations
d. all of the above
Q. The ultimate strength of cement is provided by
a. silica
b. di-calcium silicate
c. tri-calcium silicate
d. tri-calcium aluminate