Building Materials

1. A bull nose brick is not used for

  1. Rounding off sharp corners
  2. Pillars
  3. Decoration purpose
  4. Arches

Correct answer: (D)
Arches

2. A good building stone should not absorb water more than

  1. 5%
  2. 10%
  3. 15%
  4. 20%

Correct answer: (A)
5%

3. A mortar joint in masonry which is normal to the face of wall is known as

  1. Bed joint
  2. Wall joint
  3. Cross joint
  4. Bonded joint

Correct answer: (C)
Cross joint

4. A queen closer is a

  1. Brick laid with its length parallel to the face or direction of wall
  2. Brick laid with its breadth parallel to the face or direction of wall
  3. Brick having the same length and depth as the other bricks but half the breadth
  4. Brick with half the width at one end and full width at the other

Correct answer: (C)
Brick having the same length and depth as the other bricks but half the breadth

5. A volatile substance added to a paint to make its application easy and smooth, is known as

  1. Base
  2. Solvent
  3. Vehicle
  4. None to these

Correct answer: (B)
Solvent

6. According to IS 399-1963, the weight of the timber is specified at

  1. 8% moisture content
  2. 10% moisture content
  3. 12% moisture content
  4. 14% moisture content

Correct answer: (C)
12% moisture content

7. Advantage of a clamp compared to a kiln for burning bricks is that

  1. It takes less time for burning
  2. It gives more output of first class bricks
  3. It has less initial cost
  4. It is suitable when bricks are required in large numbers

Correct answer: (C)
It has less initial cost

8. After storage, the strength of cement

  1. Decreases
  2. Increases
  3. Remains same
  4. May increase or decrease

Correct answer: (A)
Decreases

9. Asbestos

  1. Is a natural fibrous mineral substance
  2. Is composed of hydrous silicates of calcium and magnesium (CaSiO3, 3MgSiO3)
  3. Contains iron oxide and alumina
  4. All the above

Correct answer: (D)
All the above

10. 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:

  1. Both A and R is true and R is the correct explanation of A
  2. Both A and R is true but R is not the correct explanation of A
  3. A is true but R is false
  4. A is false but R is true

Correct answer: (B)
Both A and R is true but R is not the correct explanation of A

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