Which of the following timbers is suitable for making sports goods ?
The age of a tree can be known by examining_________________?
Crushing strength of a first class brick should not be less than_____________?
The practical limit of moisture content achieved in air drying of timber is________________?
The trunk of tree left after cutting all the branches is known as_______________?
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 first class brick when immersed in cold water for 24 hours should not absorb water more than______________?
The main function of alumina in brick earth is_______________?
First class timber has an average life of_____________?
The plywood______________?
