Civil Engineering - Building Materials

11. 

The low voltage porcelain is mainly used for

A. switch block
B. insulating tubes
C. lamp sockets
D. All of these.

Answer: Option D

Explanation:

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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.

Answer: Option D

Explanation:

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13. 

The initial setting time of hydraulic lime, is

A. 30 minutes
B. 60 minutes
C. 90 minutes
D. 120 minutes
E. 150 minutes.

Answer: Option D

Explanation:

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14. 

PVC stands for

A. plastic very compact
B. polythene vinyl chloride
C. polythene vinyl carbon
D. polythene vanadium carbide.

Answer: Option B

Explanation:

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15. 

Generally wooden moulds are made from

A. ply wood
B. shisham wood
C. deodar wood
D. teak wood
E. hard wood.

Answer: Option B

Explanation:

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