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Wooden sleepers used on the girders of bridges are generally made of __________

(a) chir

(b) teak

(c) sal

(d) deodar

This question was posed to me by my college director while I was bunking the class.

This key question is from Dealing with Railways topic in division P.W.D of Civil Engineering Drawing

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The correct choice is (b) teak

For explanation I would say: Teak is strong. It is naturally oily, which makes it a very good material make outside furniture from. We say that it is very durable material. It is highly resistant to moisture, fire, acid and alkalis. It can be cut and shaped very easily. It does not corrode iron and steel.

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