Building Construction Materials - Building Construction Materials objective questions and answers

31.  Dampness causes

   A. Efflorescence

   B. Bleaching of paints

   C. Crumbling of plaster

   D. Growth of termites

32.  The depth of excavation of foundations is generally measured with a

   A. Ranging Rod

   B. Steel tape

   C. Levelling staff

   D. Bonning rod

33.  The black cotton soil

   A. Has high bearing capacity

   B. Gives bad appearance to building due to black colours

   C. Has negligible permeability

   D. Undergoes large volumetric change with moisture

34.  The points of low sound intensity causing unsatisfactory hearing are called

   A. Echoes

   B. Fringes

   C. Dead spots

   D. Foci

35.  Mastic

   A. A rich lime concrete mixture

   B. Cement concrete in the ratio of 1 : 2 : 3

   C. Cement concrete mixture prepared with proofing compound

   D. A preparation of bitumen used for water proofing and damp proofing etc.

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