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Building Materials - Section 1 Multiple Questions and Answers.
| 6. | Ultimate strength to cement is provided by | ||
| A. | Tricalcium silicate | ||
| B. | Di-calcium silicate | ||
| C. | Tri-calcium aluminate | ||
| D. | Tetra calcium alumino ferrite. | ||
| 7. | Elastomers can extend upto | ||
| A. | five times their original dimensions | ||
| B. | seven times their original dimensions | ||
| C. | ten times their original dimensions | ||
| D. | three times their original dimensions. | ||
| 8. | Bitumen felt | ||
| A. | is used as water proofing material | ||
| B. | is used as damp proofing material | ||
| C. | is made from bitumen and hessian fibres | ||
| D. | all the above. | ||
| 10. | In the cement the compound quickest to react with water, is | ||
| A. | Tricalcium aluminate | ||
| B. | Tetra-calcium alumino-ferrite | ||
| C. | Tricalcium silicate | ||
| D. | Dicalcium silicate. | ||
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