Civil Engineering : Building Materials And Construction QUESTIONS AND ANSWERS :: part2 : 6 to 10
Following Civil Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :
6.The disease of dry rot in timber is caused by |
| lack of ventilation |
| alternate wet and dry conditions |
| complete submergence in water |
| none of the above |
7.The plywood |
| has good strength along the panel only |
| can be spilt in the plane of the panel |
| has greater impact resistance to blows than ordinary wood |
| cannot be bent more easily than ordinary wood of same thickness |
8.A first class brick when immersed in cold water for 24 hours should not absorb water more than |
| 15% |
| 20% |
| 22% |
| 25% |
9.The practical limit of moisture content achieved in air drying of timber is |
| 5% |
| 15% |
| 25% |
| 35% |
10.Plywood is made by bonding together thin layers of wood in such a way that the angle between grains of any layer to grains of adjacent layers is |
| 0� |
| 30� |
| 45� |
| 90� |
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