MCQ of Building material:

1. Excess of alumina in brick earth makes the brick 

(A) Impermeable

(B) Brittle and weak 

(C) To lose cohesion 

(D) To crack and warp on drying

2.Inner part of a timber log surrounding the pitch, is called 

(A) Sapwood 

(B) Cambium layer 

(C) Heart wood 

(D) None to these 

3. For testing compressive and tensile strength of cement, the cement mortar is made by mixing cement and standard sand in the proportions of 

(A) 1 : 2 

(B) 1 : 3 

(C) 1 : 4 

(D) 1 : 6