The practical limit of moisture content achieved in air drying of timber is________________?
A. 5%
B. 15%
C. 25%
D. 35%
Building Materials and Construction
The trunk of tree left after cutting all the branches is known as_______________?
The trunk of tree left after cutting all the branches is known as_______________?
A. log
B. batten
C. plank
D. baulk
Plywood is made by bonding together thin layers of wood in such a way that the angle between grains of any layer to grains of adjacent layers is_________________?
Plywood is made by bonding together thin layers of wood in such a way that the angle between grains of any layer to grains of adjacent layers is_________________?
A. 0°
B. 30°
C. 45°
D. 90°
A first class brick when immersed in cold water for 24 hours should not absorb water more than______________?
A first class brick when immersed in cold water for 24 hours should not absorb water more than______________?
A. 15%
B. 20%
C. 22%
D. 25%
The main function of alumina in brick earth is_______________?
The main function of alumina in brick earth is_______________?
A. to impart plasticity
B. to make the brick durable
C. to prevent shrinkage
D. to make the brick impermeable
First class timber has an average life of_____________?
First class timber has an average life of_____________?
A. less than one year
B. 1 to 5 years
C. 5 to 10 years
D. more than 10 years
The plywood______________?
The plywood______________?
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
Plywood has the advantage of_____________?
Plywood has the advantage of_____________?
A. greater tensile strength in longer direction
B. greater tensile strength in shorter direction
C. same tensile strength in all directions
D. none of the above
The moisture content in a well seasoned timber is_______________?
The moisture content in a well seasoned timber is_______________?
A. 4% to 6%
B. 10% to 12%
C. 15% to 20%
D. 100%
Assertion A : Shishum is used for decorative woodwork. Reason R : Shishum can be polished to an excellent finish. Select your answer according to the coding system given below ?
Assertion A : Shishum is used for decorative woodwork. Reason R : Shishum can be polished to an excellent finish. Select your answer according to the coding system given below ?
A. Both A and R are true and R is the correct explanation of A
B. Both A and R are true but R is not the correct explanation of A
C. A is true but R is false
D. A is false but R is true