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  • Question
  • Pick up the correct statement from the following:


  • Options
  • A. Blisters in the finished wrought iron, are caused due to the reaction between oxide of iron and carbon
  • B. The edges of a finished wrought iron, are rough due to red shortage
  • C. Pig iron (charcoal) is manufactured from magnetic ore (Fe3O4)
  • D. For the manufacture of wrought iron, non-sulphurous fuel is not necessary
  • E. All the above.

  • Correct Answer
  • All the above. 


  • Building Materials problems


    Search Results


    • 1. Bitumen completely dissolves in

    • Options
    • A. carbon bisulphide
    • B. chloroform
    • C. benzol
    • D. coaltar
    • E. All of these.
    • Discuss
    • 2. The most valuable timber may be obtained from

    • Options
    • A. chir
    • B. shisham
    • C. sal
    • D. teak.
    • Discuss
    • 3. Which one of the following is used for preparing porcelain

    • Options
    • A. clay
    • B. feldspar
    • C. quartz
    • D. minerals
    • E. All of these.
    • Discuss
    • 4. Pick up the non-inflammable plastic from the following:

    • Options
    • A. Cellulose acetate plastics
    • B. Polyvinyl chloride plastics
    • C. Phenol formaldehyde plastic
    • D. Urea formaldehyde plastic.
    • Discuss
    • 5. Pig iron made from heamatite ores free from sulphur, phosphorus and copper, is known as

    • Options
    • A. Bessemer pig
    • B. Grey or foundry pig
    • C. White or forge pig
    • D. Mottled pig
    • E. All the above.
    • Discuss
    • 6. Laterite is found in

    • Options
    • A. U.P.
    • B. Punjab
    • C. West Bengal
    • D. Kerala.
    • Discuss
    • 7. Spirit varnish generally consists of

    • Options
    • A. oil, wax and resin
    • B. alcohol, wax and turpentine
    • C. pigment and synthetic resin
    • D. spirit and shellac
    • E. none of these.
    • Discuss
    • 8. Pick up the correct statement from the following:

    • Options
    • A. Blistering may be cured by applying water paint finished with oil paint dried with a little copal varnish
    • B. Cracked paints may be cured by removing paint and giving a fresh coat of paint
    • C. Crawling paints may be cured by sand preparing the surface and giving a fresh coat with plenty of turps
    • D. All the above.
    • Discuss
    • 9. Pick up the compound responsible for early strength of cement from the following:

    • Options
    • A. Tetra-calcium alumino-ferrite
    • B. Tricalcium silicate
    • C. Tricalcium aluminate
    • D. Dicalcium silicate.
    • Discuss
    • 10. Pick up the correct statement from the following:

    • Options
    • A. Melamine is obtained from calcium carbide
    • B. Formaldehyde is prepared synthetically from methane
    • C. The melamine when reacted with formaldehyde forms the melamine-formaldehyde resin
    • D. The plastics made from melamine formaldehyde resin, are used for electrical insulators
    • E. All the above.
    • Discuss


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