Construction Materials

271) The carbon content in high tension steel is

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<0.15%

272) The carbon content in cast iron is in the range of

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2 to 4.5%

273) The carbon content in mild steel is in the range of

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0.15 to 0.30%

274) The chromium content in stainless steel is more than

275) Invar is a nickel steel with nickel content between

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30-40%

276) Good quality sand is never obtained from the following source

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sea

277) Dextrine is

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rubber based adhesive

278) The defect caused due to over-maturity, and unventilated storage during transit is called

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foxiness

279) the soluction of salts from the soil absorbed by the trees which becomes a viscous solution due to loss of moisture and action of carbon dioxide is known as

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sap

280) When the timber is attacked by fungus and reduced to powder, it is called

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dry rot

Subject Notes

Objective Box

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