As per IS specifications, the maximum final setting time for ordinary Portland cement should be_______________?
A. 30 minutes
B. 1 hour
C. 6 hours
D. 10 hours
Month: January 2019
The constituent of cement which is responsible for all the undesirable properties of cement is____________?
The constituent of cement which is responsible for all the undesirable properties of cement is____________?
A. dicalcium silicate
B. tricalcium silicate
C. tricalcium aluminate
D. tetra calcium alumino ferrite
The initial setting time for ordinary Portland cement as per IS specifications should not be less than_____________?
The initial setting time for ordinary Portland cement as per IS specifications should not be less than_____________?
A. 10 minutes
B. 30 minutes
C. 60 minutes
D. 600 minutes
Le Chatelier’s device is used for determining the_______________?
Le Chatelier’s device is used for determining the_______________?
A. setting time of cement
B. soundness of cement
C. tensile strength of cement
D. compressive strength of cement
The main ingredients of Portland cement are________________?
The main ingredients of Portland cement are________________?
A. lime and silica
B. lime and alumina
C. silica and alumina
D. lime and iron
Hydraulic lime is obtained by_______________?
Hydraulic lime is obtained by_______________?
A. burning of lime stone
B. burning of kankar
C. adding water to quick lime
D. calcination of pure clay
Glazing is used to make earthenware______________?
Glazing is used to make earthenware______________?
A. hard
B. soft
C. porous
D. impervious
Quick lime is (1) slow in setting (2) rapid in slacking (3) good in strength The correct answer is____________?
Quick lime is (1) slow in setting (2) rapid in slacking (3) good in strength The correct answer is____________?
A. only (1)
B. only (2)
C. both (1) and (2)
D. both (2) and (3)
Quick lime is_______________?
Quick lime is_______________?
A. calcium carbonate
B. calcium oxide
C. calcium hydroxide
D. none of the above
Number of bricks required for one cubic metre of brick masonry is____________?
Number of bricks required for one cubic metre of brick masonry is____________?
A. 400
B. 450
C. 500
D. 550