Building Materials

351. Pick up the correct statement from the following:

1. Hornblende mineral is brittle
2. Muscovite is also known as white mica and potash mica
3. Biotite is also known as black-mica
4. All the above

View answer

352. Good quality sand is never obtained from

1. River
2. Lake
3. Sea
4. Gravel powder

View answer

353. Lime mortar is generally made with

1. Quick lime
2. Fat lime
3. Hydraulic lime
4. Plain lime

View answer

354. Pick up the compound responsible for early strength of cement from the following:

1. Tetra-calcium alumino-ferrite
2. Tri-calcium silicate
3. Tri-calcium aluminate
4. Di-calcium silicate

View answer

355. Linseed oil is used in paints as

1. Thinner
2. Vehicle
3. Base
4. Drier

View answer

356. Asphalt is obtained from

1. Petroleum distillation
2. Bitumen distillation
3. Plastic distillation
4. None of these

View answer

357. Percentage content of silica in window glass, is

1. 40 to 45
2. 50 to 55
3. 60 to 65
4. 70 to 75

View answer

358. Most commonly used solvent in oil paints, is

1. Petroleum
2. Spirit
3. Coal tar
4. Turpentine

View answer

359. The harmonious mixing of the clay ingredients, is known as

1. Weathering
2. Blending
3. Tempering
4. None of these

View answer

360. Bitumen felt

1. Is used as water proofing material
2. Is used as damp proofing material
3. Is made from bitumen and hessian fibres
4. All the above

View answer