Civil Engineering - Building Materials

1. 

The pigment used in paints for corrosive resistance, is

A. white lead
B. ferrous oxide
C. zinc white
D. red lead
E. gypsum.

Answer: Option D

Explanation:

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2. 

A well seasoned timber may contain moisture up to

A. 4 to 6%
B. 6 to 8%
C. 8 to 10%
D. 10 to 12%.

Answer: Option D

Explanation:

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3. 

The stones obtained by blasting are used as

A. ballast in railways
B. aggregates for concrete
C. roadmetal
D. All the above.

Answer: Option D

Explanation:

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4. 

Distemper is

A. a paint consisting of powdered chalk, pigments, and water
B. a water proofing agent
C. a paint consisting of coloured cement and water
D. a drying agent.

Answer: Option A

Explanation:

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5. 

Oil varnish generally consists of

A. synthetic resin and spirit
B. oil, wax and resin
C. resin, oil and turpentine
D. spirit, oil and wax.

Answer: Option C

Explanation:

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