500 Best Concrete Technology- MCQ
Q9). Reinforced cement concrete is equally strong in taking
a).tensile and compressive stresses
b).compressive and shear stresses
c).tensile, compressive and shear stresses
d).tensile and shear stresses
Correct Answer:
tensile, compressive and shear stresses
Explanation:
Q10). Plain cement concrete is strong in taking
a).tensile stress
b).compressive stress
c).shear stress
d).all of these
Correct Answer:
compressive stress
Explanation:
Q11). The cement concrete in which high compressive stresses are artificially induced before its actual use, is called
a).plain cement concrete
b).reinforced cement concrete
c).prestressed cement concrete
d).lime concrete
Correct Answer:
prestressed cement concrete
Explanation:
Q12). For heat and sound insulation purposes, we shall use
a).vacuum concrete
b).air entrained concrete
c).saw dust concrete
d).both A and B
Correct Answer:
air entrained concrete
Explanation:
Q13). The cement concrete, from which entrained air and excess water are removed after placing it in position, is called
a).vacuum concrete
b).light weight concrete
c).prestressed concrete
d).sawdust concrete
Correct Answer:
vacuum concrete
Explanation:
Q14). The removal of excess air after placing concrete helps in increasing the strength of concrete by
a).15 to 20 %
b).20 to 30 %
c).30 to 50 %
d).50 to 70 %
Correct Answer:
15 to 20 %
Explanation:
Q15). The cement concrete prepared by mixing aluminium in it, is called
a).air entrained concrete
b).cellular concrete
c).aerated concrete
d).any one of these
Correct Answer:
any one of these
Explanation:
Q16). The light weight concrete is prepared by
a).mixing portland cement with sawdust in specified proportion in concrete
b).using coke breeze, cinder or slag as aggregate in concrete
c).mixing aluminium in the concrete
d).none of the above
Correct Answer:
using coke breeze, cinder or slag as aggregate in concrete
Explanation: