Engineering - Civil Enginnering

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25.

The radial splits which are wider on the outside of the log and narrower towards the pith are known as                        
A. heart shakes B. cupshakes
C. starshakes D. rindgalls



26.

In which of the following pairs both trees yield soft wood?                        
A. deodar and shishum B. chir and sal
C. sal and teak D. chir and deodar



27.

Which of the following timbers is suitable for making sports goods ?                        
A. mulberry B. mahogany
C. sal D. deodar




28.

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



29.

The disease of dry rot in timber is caused by                        
A. lack of ventilation B. alternate wet and dry conditions
C. complete submergence in water D. none of the above



30.

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



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