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Civil Engineering :: Building Materials

  1. Assertion A : Normally turpentine oil is recommended as thinner for indoor painting.
    Reason R : Turpentine oil is costlier than other thinners.
    Select your answer according to the coding system given below:

  2. A.

     Both A and R is true and R is the correct explanation of A

    B.

     Both A and R is true but R is not the correct explanation of A

    C.

     A is true but R is false

    D.

     A is false but R is true


  3. Assertion A : Paints with white lead base are not recommended for painting of iron works.
    Reason R : Paints with white lead base do not check rusting of iron.
    Select your answer according to the coding system given below:

  4. A.

     Both A and R is true and, R is the correct explanation of A

    B.

     Both A and R is true but R is not the correct explanation of A

    C.

     A is true but R is false

    D.

     A is false but R is true


  5. The stones obtained by blasting are used as

  6. A.

     Ballast in railways

    B.

     Aggregates for concrete

    C.

     Road metal

    D.

     All the above


  7. Which of the following stresses is used for identifying the quality of structural steel?

  8. A.

     Ultimate stress

    B.

     Yield stress

    C.

     Proof stress

    D.

     None of the above


  9. Sea sand used in structures causes

  10. A.

     Dampness

    B.

     Efflorescence

    C.

     Disintegration

    D.

     All of these


  11. Cross cut saw is used for

  12. A.

     Cutting soft stones

    B.

     Cutting hard stones

    C.

     Cutting large blocks of stones

    D.

     Dressing stones


  13. Wrought iron contains carbon upto

  14. A.

     0.25 %

    B.

     1.0 %

    C.

     1.5 %

    D.

     2.0 %


  15. Which of the following sedimentary rocks changes into quartzite by metamorphic action?

  16. A.

     Sand stone

    B.

     Lime stone

    C.

     Shale

    D.

     Gypsum


  17. Non acid-resistant asbestos is:

  18. A.

     Tremolite asbestos

    B.

     Chrysotile asbestos

    C.

     Amosite asbestos

    D.

     None of these


  19. Bitumen completely dissolves in

  20. A.

     Carbon bisulphide

    B.

     Chloroform

    C.

     Coal tar

    D.

     All of these