Building Materials - Building Materials objective questions and answers

11.  Which of the following material is not associated directly or indirectly with building construction?

   A. Carborandum

   B. Stetite

   C. Thermoset plastic

   D. Pumic stone

12.  For construction of structures under water, the type of lime used is

   A. Hydraulic lime

   B. Fat lime

   C. Quick lime

   D. Pure lime

13.  The size of aggregates accepted as suitable for R.C.C. construction work is about

   A. 0.5 mm to 1.0 mm

   B. 1.0 mm to 3 mm

   C. 3.0 mm to 5 mm

   D. 5 mm to 20 mm

14.  For R.C.C. construction the maximum size of coarse aggregate is limited to

   A. 10 mm

   B. 15 mm

   C. 20 mm

   D. 25 mm

15.  The structure of ligin is

   A. Crystalline

   B. Amorphous

   C. Semi-crystalline

   D. Metallic

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