Building Materials and Construction MCQs with answers PDF for PPSC, FPSC, NTS, OTS, SPSC, PTS, BPSC, ETEA, and KPPSC. Includes a Civil Engineering MCQs PDF book, ideal for Civil Engineering students preparing for competitive exams and technical interviews.
Normal consistency of ordinary Portland cement is about _____ ?
A. 30%
B. 40%
C. 10%
D. 20%After storage, the strength of cement _____ ?
A. may increase or decrease
B. decreases
C. increases
D. remains sameSlump recommended for mass concrete is about ___ ?
A. 100 mm to 125 mm
B. 125 mm to 150 mm
C. 50 mm to 100 mm
D. 25 mm to 50 mmAddition of pozzolana to ordinary Portland cement increases _____ ?
A. permeability
B. heat of hydration
C. bleeding
D. shrinkageWith increase in moisture content, the bulking of sand ____ ?
A. first decreases to a certain minimum value and then increases
B. first increases to a certain maximum value and then decreases
C. increases
D. decreasesAccording to IS specifications, the compressive strength of ordinary portland cement after three days should not be less than ____ ?
A. 16 MPa
B. 21 MPa
C. 7 MPa
D. 11.5 MPaEarly attainment of strength in rapid hardening cement is mainly due to _____ ?
A. finer grinding
B. tricalcium aluminate
C. gypsum
D. tricalcium silicateWhich of the following is the purest form of iron ?
A. wrought iron
B. high carbon steel
C. cast iron
D. mild steelMost commonly used retarder in cement is _____ ?
A. calcium carbonate
B. calcium chloride
C. gypsum
D. None of themUltimate tensile strength of structural mild steel is about _____ ?
A. 520 N/mm2
B. 420 N/mm2
C. 160N/mm2
D. 260N/mm2