Building Materials Interview Questions - Set 21 - ObjectiveBooks

Building Materials Interview Questions - Set 21

Practice Test: Question Set - 21

1. The rocks formed by gradual deposition, are called
    (A) Sedimentary rocks
    (B) Igneous rocks
    (C) Metamorphic rocks
    (D) None of these

2. Plastic
    (A) Is an organic substance
    (B) Consists of natural or synthetic binders
    (C) Finished products are rigid and stable at normal temperature
    (D) All the above

3. Apiece of sawn timber whose cross-sectional dimensions exceed 5 cm, in one direction and 20 cm in the other direction, is called a
    (A) Cant
    (B) Deal
    (C) Baulk
    (D) Strip

4. Rocks formed due to alteration of original structure due to heat and excessive pressure are called
    (A) Sedimentary rocks
    (B) Igneous rocks
    (C) Metamorphic rocks
    (D) None of these

5. Geologically, marble is known as
    (A) Sedimentary rock
    (B) Igneous rock
    (C) Metamorphic rock
    (D) Stratified rock

6. Iron ore may contain
    (A) Carbon
    (B) Silicon
    (C) Phosphorus and manganese
    (D) All the above

7. Pick up the incorrect statement from the following:
    (A) Plastics are chemical resistant
    (B) Plastics are durable
    (C) Plastics are ductile
    (D) Plastics are excellent electric insulators

8. The cracks caused by shrinkage of the exterior surface of the wood exposed to atmosphere, are called:
    (A) Radial shakes
    (B) Heart shakes
    (C) Wind cracks
    (D) Twisted fibres

9. Pig iron is manufactured from the ores by
    (A) Dressing
    (B) Calcination and roasting
    (C) Smelting
    (D) All the above

10. Pick up the correct statement from the following:
    (A) The plywoods do not split or crack due to changes in atmosphere
    (B) The commercial plywoods are available upto 150 cm wide and upto 300 cm long
    (C) The plywoods possess uniform tensile strength in all directions
    (D) All the above

11. Jhumb bricks are
    (A) Under burnt
    (B) Over burnt
    (C) Kutcha
    (D) None of these

12. Pick up the correct statement from the following:
    (A) Steel produced by open hearth process is milder than that obtained by the Bessemer process
    (B) Engineers prefer open hearth steel for structural purpose as it is more homogenous
    (C) Basic Bessemer process is suitable for converting poor ore containing a large proportion of sulphur and phosphorus into steel
    (D) All the above

13. Refractory bricks resist
    (A) High temperature
    (B) Chemical action
    (C) Dampness
    (D) All the above

14. The thermosetting plastic
    (A) Becomes rigid when moulded at suitable pressure and temperature
    (B) At 127°C to 177°C permanently set and further application of heat does not soften it
    (C) Chars at 343°C
    (D) All the above

15. Commonly used thinner in
    (A) Lacquer paints, is alcohol
    (B) Cellulose paints is ethyl acetate
    (C) Oil paints, is naphtha
    (D) All the above

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