Building Materials - Section 4 Multiple Questions and Answers.




11.The low voltage porcelain is mainly used for
A. switch block
B. insulating tubes
C. lamp sockets
D. All of these.

12.Putty is
A. made with finely powdered chalk and linseed oil
B. used for fixing glass panes
C. softened by a solution of pearl ash and quick-lime soaked in water
D. all the above.

13.The initial setting time of hydraulic lime, is
A. 30 minutes
B. 60 minutes
C. 90 minutes
D. 120 minutes

14.PVC stands for
A. plastic very compact
B. polythene vinyl chloride
C. polythene vinyl carbon
D. polythene vanadium carbide.

15.Generally wooden moulds are made from
A. ply wood
B. shisham wood
C. deodar wood
D. teak wood

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