Top 550+ Solved Building Materials MCQ Questions Answer
Q. Pick up the correct statement from the following
a. The average crushing strength of hand moulded bricks is 6000 t/m2
b. The average tensile strength of hand moulded brick is 200 t/m2
c. The average shearing strength of hand moulded brick is 600 t/m2
d. All the above.
Q. The cracks which extend from bark towards the sap wood in the cross section of a tree, arecalled
a. radial shakes
b. star shakes
c. heart shakes
d. cup shakes.
Q. Sea sand used in structures causes
a. dampness
b. efflorescence
c. disintegration
d. All of these.
Q. When a brick is immersed in water for 24 hours and then dried, if
a. no grey or white deposits appear on the surface, the brick is free from soluble salts
b. 10 per cent surface is covered with grey or white deposits, the brick has slight efflorescence
c. 50 per cent surface is covered with grey or white deposits, the brick has serious efflorescence
d. All the above.
Q. In arches, stratified stones are placed so that their planes are
a. parallel
b. perpendicular
c. radial
d. none of these.
Q. The steel used for rails under heavy traffic and on sharp curves, is
a. Nickel steel
b. Chrome steel
c. Magnese steel
d. Vanadium steel.
Q. Oil varnish generally consists of
a. synthetic resin and spirit
b. oil, wax and resin
c. resin, oil and turpentine
d. spirit, oil and wax.
Q. The cracks which extend from bark towards the sap wood in the cross section of a tree, are
a. radial shakes
b. star shakes
c. heart shakes
d. cup shakes.
Q. The compound of Portland cement which reacts immediately with water and sets first is
a. Tri-calcium silicate
b. Di-calcium silicate
c. Tri-calcium aluminate
d. Tetra calcium alumino ferrite.
Q. The fire clay contains pure
a. lime
b. oxide of iron
c. hydrated aluminium silicate
d. magnesium.
Q. The rocks which are formed due to cooling of magma at a relatively shallow depth from theearth's surface are called
a. Plutonic rocks
b. Hypabyssal rocks
c. Volcanic rocks
d. Igneous rocks.
Q. The thermosetting plastic
a. becomes rigid when moulded at suitable pressure and temperature
b. at 127°C to 177°C permanently set and further application of heat does not soften it
c. charrs at 343°C
d. All the above.