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  • Question
  • The rocks formed from molten magma, are called


  • Options
  • A. sedimentary rocks
  • B. igneous rocks
  • C. metamorphic rocks
  • D. none of these.

  • Correct Answer
  • igneous rocks 


  • Building Materials problems


    Search Results


    • 1. With storage, strength of cement

    • Options
    • A. increases
    • B. decreases
    • C. remains the same
    • D. none to these.
    • Discuss
    • 2. The size of mould for bricks, is generally kept

    • Options
    • A. a little large to specified size
    • B. a little small to specified size
    • C. equal to specified size
    • D. 10% larger than specified size
    • E. 20% larger than specified size.
    • Discuss
    • 3. A prime coat is given to steel work with

    • Options
    • A. an oxide of iron paint
    • B. a mixture of white lead and lead paint
    • C. a special paint
    • D. cement paint.
    • Discuss
    • 4. Pick up the correct statement from the following:

    • Options
    • A. Adding 5% to 6% of moisture content by weight, increases the volume of dry sand from 18% to 38%
    • B. The bulking of fine sand is more than that of coarse sand
    • C. If the percentage content of moisture exceeds 10%, increase in bulk of sand starts increasing
    • D. The volume of fully saturated sand equals that of dry sand
    • E. All the above.
    • Discuss
    • 5. Ground glass

    • Options
    • A. is made by grinding its one side
    • B. is made by melting powdered glass paints surface
    • C. is used for getting light without transparency
    • D. all the above.
    • Discuss
    • 6. The wedging is adopted for quarrying costly stratified rock such as

    • Options
    • A. laterite
    • B. marble
    • C. limestone
    • D. sandstone
    • E. All the above.
    • Discuss
    • 7. Rapid hardening cement attains early strength due to

    • Options
    • A. larger proportion of lime grounded finer than normal cement
    • B. lesser proportion of lime grounded coarser than normal cement
    • C. lesser proportion of lime grounded finer than normal cement
    • D. larger proportien of lime grounded coarser than normal cement
    • E. excess percentage of gypsum.
    • Discuss
    • 8. In stone masonry, if stones are so placed that their layers are parallel to the direction of load, they

    • Options
    • A. split easily
    • B. are affected by moisture
    • C. both (a) and (b)
    • D. none of these.
    • Discuss
    • 9. Teak wood is suitable for

    • Options
    • A. sports articles
    • B. furnitures
    • C. railway sleepers
    • D. all the above.
    • Discuss
    • 10. The most commonly used base for timber painting, is

    • Options
    • A. red lead
    • B. zinc white
    • C. white lead
    • D. titanium white.
    • Discuss


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