Building Materials - Free Quiz (08)

1. Match List-I with List-II and select the correct answer using the codes given below the lists :

List-I List-II

A B C D – 1 2 3 4

A B C D – 3 4 2 1

A B C D – 4 3 1 2

A B C D – 2 1 4 3

2. Consider the following operations of preparation of brick earth
1. Digging
2. Weatherig
3. Tempering
4. Blending
5. Unsoiling

The correct sequence of these operations are

5, 1, 2, 4, 3

5, 1, 3, 2, 4

1, 5, 2, 4, 3

5, 1, 4, 2, 3

3. The defect in clay products because of imprisoned air during their moulding is known as

Blister

Lamination

Cracks

Spots

4. The bricks which are extensively used for basic refractories in furnaces are

Chrome bricks

Sillimanite bricks

Magnesite bricks

Fosterite bricks

5. What is efflorescence?

Formation of white patches on the brick surface due to insoluble salts in the brick clay.

Swelling of brick due to presence of carbonaceous matter and gass

Deformation of brick due to exposure to rain

Impurities in the brick clay which show after burning

Building Materials – Free Quiz (08)