Building Materials, Third Edition

(Jacob Rumans) #1
‡2—2‡2€
™  IQW

Codes:
(a)ABCD (b)ABCD
1234 2134
(c)ABCD (d)ABCD
2143 1243


  1. Match List-I with List-II and select the correct answer using the codes given below the
    lists :
    List-I List-II
    A. Highly refractory 1. Slow and difficult to season
    free from defects
    B. Moderately refractory 2. May be seasoned free from
    surface defects under rapid
    drying conditions
    C. Non-refractory 3. Can be rapidly seasoned
    free from surface defects

  2. Refractory to treatment
    Codes:
    (a)ABC (b)ABC
    123 413
    (c)ABC (d)ABC
    432 321

  3. Which of the following is not an objective of seasoning timber?
    (a) Reduction in shrinkage and warping
    (b) Reduction of weight
    (c) Increase in strength and durability
    (d) Reduction of natural defects in timber

  4. The drawback of electric seasoning of timber is
    (a) checks (b) splitting (c) cracks (d) reduced strength

  5. Seasoning of timber is necessary to
    (a) increase the fire resistance
    (b) increase the vermin resistance
    (c) reduce the microbial substances
    (d) expel the moisture present in timber

  6. Seasoning of timber is required to
    (a) soften the timber (b) harden the timber
    (c) straighten the timber (d) remove sap from the timber

  7. How many days, a timber may require for natural seasoning?
    (a) 20 months (b) 4 – 6 months (c) 1 year (d) 2 years

  8. Consider the following statements :
    Seasoning of timber results in

  9. increased strength

  10. increased durability

  11. reduced resilience
    Of these statements
    (a) 1, 2 and 3 are correct (b) 1 and 3 are correct
    (c) 1 and 2 are correct (d) 2 and 3 are correct

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