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13.

Jumper is a tool used for                        
A. testing of stones B. quarrying of stones
C. dressing of stones D. none of the above



14.

The important test to be conducted on a stone used in docks and harbours is-                        
A. hardness test B. workability test
C. weight test D. toughness test



15.

The predominant constituent which is responsible for strength in granite is                        
A. quartz B. felspar
C. mica D. none of the above




16.

Granite is not suitable for ordinary building purpose because                        
A. it can not be polished B. it is not a fire proof material
C. it is costly D. it has less crushing strength



17.

Which of the following stone is best suited for construction of piers and abutments of a railway bridge ?                        
A. granite B. sand stone
C. lime stone D. quartzite



18.

The preparation of surface of stone to obtain plain edges or to obtain stones of required size and shape is known as                        
A. quarrying of stones B. blasting of stones
C. seasoning of stones D. dressing of stones



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