Building Materials

231. The plastics made from cellulose resin

1. Are as clear as glass
2. Are tough and strong
3. Possess excellent electrical properties
4. All the above

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232. Polymerization helps to improve the property of

1. Strength
2. Rigidity
3. Elasticity
4. All of these

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233. For filling cracks in masonry structures, the type of bitumen used, is

1. Cut-back bitumen
2. Bitumen-emulsion
3. Blown bitumen
4. Plastic bitumen

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234. Expanded metal is

1. Manufactured from steel sheets
2. Used for reinforced concrete in road pavements
3. Measured in term of SWM (short way mesh) and LWM (long way mesh)
4. All the above

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235. Pick up the plutonic rock from the following:

1. Granite
2. Dolerite
3. Basalt
4. All the above

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236. The portion of the brick without a triangular corner equal to half the width and half the length, is called

1. Closer
2. Queen closer
3. King closer
4. Squint brick

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237. Cement is said to be of good quality if

1. Its colour is not greenish grey
2. One feels cool by thrusting one's hand in the cement bag
3. A handful of cement thrown into a bucket of water does not float
4. None of these

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238. The silica is used for preparing

1. Silica bricks
2. Coke oven
3. Lining for glass furnaces
4. All of these

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239. The timber having maximum resistance against white ants, is obtained from

1. Chir
2. Shishum
3. Sal
4. Teak

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240. Duco is one of the patent forms of

1. Emulsion paints
2. Plastic paints
3. Bituminous paints
4. Cellulose paints

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