Category: Building Materials and Construction

A. 5 to 10%
B. 20 to 30%
C. 50 to 60%
D. 70 to 80%

A. mechanically formed sedimentary rock
B. igneous rock
C. chemically precipitated sedimentary rock
D. metamorphic rock

A. hard
B. tough
C. heavy
D. light

A. iron
B. carbon
C. manganese
D. sulphur

A. 5%
B. 15%
C. 25%
D. 35%

A. has good strength along the panel only
B. can be spilt in the plane of the panel
C. has greater impact resistance to blows than ordinary wood
D. cannot be bent more easily than ordinary wood of same thickness

A. gypsum
B. finer grinding
C. tricalcium silicate
D. tricalcium aluminate

A. less than one year
B. 1 to 5 years
C. 5 to 10 years
D. more than 10 years

A. 25 mm
B. 40 mm
C. 65 mm
D. 100 mm

A. balusters
B. newal posts
C. balustrades
D. railings