For a good building stone how much is the required crushing strength?

a) Less than 50 N/mm2

b) Greater than 100 N/mm2

c) 155 N/mm2

d) 10 N/mm2

Which of the following is a good fire-resistant stone?

a) Clay

b) Granite

c) Quartz

d) Limestone

What is a freestone?

a) Stone free from impurities

b) Stone that doesn’t require dressing

c) Metamorphic stone

d) Stone free from veins and planes of cleavage

Why are stones with lighter shades of colour preferred?

a) Easy to clean

b) Easily available

c) Don’t spoil the appearance

d) Darker shades are heavier

Hardness is an important parameter considered in the construction of:

a) Slabs

b) Walls

c) Bridges

d) Arches

What is the required specific gravity for a good building stone?

a) Greater than 2.7

b) Less than 3

c) Greater than 3

d) Less than 2.7

What texture should a building stone possess?

a) Loose grains

b) Crystalline structure

c) Cavities

d) Cracks

Seasoning is required for stones.

a) True

b) False

Toughness index of a good stone should be more than:

a) 17

b) 18

c) 13

d) 19

A percentage wear of 3% indicates a good stone.

a) True

b) False

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